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[[File:Sig07-009.jpg|thumb|right|240px|Image of [[spiral galaxy]] [[Messier 81|M81]] combining data from the [[Hubble Space Telescope|Hubble]], [[Spitzer Space Telescope|Spitzer]], and [[GALEX]] space telescopes.]] | |||
'''Density wave theory''' or the '''Lin-Shu density wave theory''' is a theory proposed by [[Chia-Chiao Lin|C.C. Lin]] and [[Frank Shu]] in the mid-1960s to explain the spiral arm structure of [[spiral galaxy|spiral galaxies]]. Their theory introduces the idea of long-lived '''[[Quasistatic process|quasistatic]] density waves''' (also called '''heavy sound'''),<ref>{{cite journal |title=Large-scale dynamics of the interstellar medium |author= Kaplan, S. A.; Pikelner, S. B. | year=1974 |journal= Annual review of astronomy and astrophysics |volume=12 |issue=1 |pages=113–133 |location=Palo Alto |doi= 10.1146/annurev.aa.12.090174.000553 |bibcode= 1974ARA&A..12..113K }}</ref> which are sections of the [[galactic disk]] that have greater mass density (about 10–20% greater).<ref name="Carroll2007">{{cite book | author = Carroll, Bradley W. and Dale A. Ostlie | title=An Introduction to Modern Astrophysics | publisher=Addison Wesley | year=2007 | pages=967 | isbn = 0-201-54730-9 }}</ref> The theory has also been successfully applied to [[Rings of Saturn|Saturn's rings]]. | |||
== | ==Galactic spiral arms== | ||
[[File:spiral galaxy arms diagram.svg|thumb|240px|right|Explanation of spiral galaxy arms.]] | |||
[[File:Spiral arms.ogv|thumb|right|240px|Simulation of a Galaxy with a simple spiral arm pattern. Although the spiral arms do not rotate the galaxy does. If you watch closely you will see stars moving in and out of the spiral arms as time progresses.]] | |||
Originally, astronomers had the idea that the arms of a spiral galaxy were material. However, if this were the case, then the arms would become more and more tightly wound, since the matter nearer to the center of the galaxy rotates faster than the matter at the edge of the galaxy. The arms would become indistinguishable from the rest of the galaxy after only a few orbits. This is called the '''winding problem'''.<ref name="Carroll2007" /> | |||
Lin and Shu proposed in 1964 that the arms were not material in nature, but instead made up of areas of greater density, similar to a [[traffic jam]] on a highway.<ref name="LinShu1964">{{cite journal | last1 = Lin | first1 = C.C. | last2 = Shu | first2 = F.H. | year = 1964 | title = On the spiral structure of disk galaxies | url = | journal = [[Astrophysical Journal]] | volume = 140 | issue = | pages = 646–655 | doi = 10.1086/147955 | bibcode=1964ApJ...140..646L}}</ref> The cars move through the traffic jam: the density of cars increases in the middle of it. The traffic jam itself, however, does not move (or not a great deal, in comparison to the cars). In the galaxy, stars, gas, dust, and other components move through the density waves, are compressed, and then move out of them. | |||
== | More specifically, the density wave theory argues that the "gravitational attraction between stars at different radii" prevents the so-called winding problem, and actually maintains the spiral pattern.<ref name="Phillipps, Steven 2005 132–3">{{cite book | author = Phillipps, Steven | title=The Structure & Evolution of Galaxies | publisher=Wiley | year=2005 | pages=132–3 | isbn = 0-470-85506-1 }}</ref> | ||
The rotation speed of the arms is defined to be <math>\Omega_{gp}</math>, the '''global pattern speed'''. (Thus, within a certain [[non-inertial reference frame]], which is rotating at <math>\Omega_{gp}</math>, the spiral arms appear to be at rest). The stars ''within'' the arms are not necessarily stationary, though at a certain distance from the center, <math>R_{c}</math>, the '''corotation radius''', the stars and the density waves move together. Inside that radius, stars move more quickly (<math>\Omega > \Omega_{gp}</math>) than the spiral arms, and outside, stars move more slowly (<math>\Omega < \Omega_{gp}</math>).<ref name="Carroll2007" /> It is easy to see that for an ''m''-armed spiral, a star at radius ''R'' from the center will move through the structure with a frequency <math>m(\Omega_{gp} - \Omega (R))</math>. So, the gravitational attraction between stars can only maintain the spiral structure if the frequency at which a star passes through the arms is less than the '''[[epicyclic frequency]]''', <math>\kappa (R)</math>, of the star. This means that a long-lived spiral structure will only exist between the '''inner''' and '''outer [[Lindblad resonance]]''' (ILR, OLR, respectively), which are defined as the radii such that: <math>\Omega (R)=\Omega_{gp} + \kappa /m</math> and <math>\Omega (R)=\Omega_{gp} - \kappa /m</math>, respectively. Past the OLR and within the ILR, the extra density in the spiral arms pulls more often than the epicyclic rate of the stars, and the stars are thus unable to react and move in such a way as to "reinforce the spiral density enhancement".<ref name="Phillipps, Steven 2005 132–3"/> | |||
== | <gallery perrow="3" widths="200" heights="200"> | ||
File:Galaxy rotation rigid.ogv|'''Animation 1:''' If the spiral arms were rigid mass concentration the galaxy must rotate as a whole around its center in order to maintain its spiral structure. According to Lindblads observation and the laws of physics this is not the case. | |||
File:Galaxy rotation wind.ogv|'''Animation 2:''' Differential rotation as observed by Lindblad would dissolve spiral arms in a short period of time were they composed of fixed mass concentrations. | |||
File:Galaxy rotation wave.ogv|'''Animation 3:''' Orbits predicted by the density wave theory allow the existence of stable spiral arms. Stars move in and out of the spiral arms as they orbit the galaxy. | |||
</gallery> | |||
==Further implications== | |||
= | [[File:PIA08824 A ring spiral density waves.jpg|thumb|right|240px|Spiral density waves in Saturn's [[Rings of Saturn#A Ring|A Ring]] induced by [[orbital resonance|resonances]] with nearby [[Moons of Saturn|moons]].]] | ||
The Density Wave Theory also explains a number of other observations that have been made about spiral galaxies. For example, "the ordering of [[H I region|H I clouds]] and '''dust bands''' on the inner edges of spiral arms, the existence of young, massive stars and [[H II region]]s throughout the arms, and an abundance of old, red stars in the remainder of the disk".<ref name="Carroll2007" /> Basically, when clouds of gas and [[Cosmic dust|dust]] enter into a density wave and are compressed the rate of star formation increases as some clouds meet the [[Jeans instability|Jeans criterion]], and collapse to form new stars. Since star formation does not happen immediately, the stars are slightly behind the density waves. The hot [[OB star]]s that are created ionize the gas of the [[interstellar medium]], and form H II regions. These stars have relatively short lifetimes, however, and expire before fully leaving the density wave. The smaller, redder stars do leave the wave, and become distributed throughout the galactic disk. | |||
==Application to Saturn's rings== | |||
Beginning in the late 1970s, [[Peter Goldreich]], [[Frank Shu]], and others applied density wave theory to the [[rings of Saturn]].<ref name="GT78">{{cite journal | |||
| last = Goldreich | |||
| first = Peter | |||
| authorlink = Peter Goldreich | |||
| coauthors = [[Scott Tremaine|Tremaine, Scott]] | |||
| title = The formation of the Cassini division in Saturn's rings | |||
| journal = [[Icarus (journal)|Icarus]] | |||
| volume = 34 | |||
| issue = 2 | |||
| pages = 240–253 | |||
| publisher = [[Elsevier|Elsevier Science]] | |||
| date = May 1978 | |||
| url = | |||
| doi = 10.1016/0019-1035(78)90165-3| bibcode=1978Icar...34..240G}}</ref><ref name="GT82">{{cite journal | |||
| last = Goldreich | |||
| first = Peter | |||
| authorlink = Peter Goldreich | |||
| coauthors = [[Scott Tremaine|Tremaine, Scott]] | |||
| title = The Dynamics of Planetary Rings | |||
| journal = Ann. Rev. Astron. Astrophys. | |||
| volume = 20 | |||
| issue = 1| pages = 249–283 | |||
| publisher = [[Annual Reviews]] | |||
| date = September 1982 | |||
| url = http://arjournals.annualreviews.org/doi/abs/10.1146/annurev.aa.20.090182.001341 | |||
| doi = 10.1146/annurev.aa.20.090182.001341 | |||
| accessdate = | |||
| bibcode=1982ARA&A..20..249G}}</ref><ref name="Shu84">{{Cite book | |||
| first = Frank H. | |||
| last = Shu | |||
| author-link = Frank Shu | |||
| first2 = | |||
| last2 = | |||
| author2-link = | |||
| editor-last = Greenberg | |||
| editor-first = R. | |||
| editor2-last = Brahic | |||
| editor2-first = A. | |||
| contribution = Waves in planetary rings | |||
| contribution-url = http://adsabs.harvard.edu/abs/1984prin.conf..513S | |||
| title = Planetary Rings | |||
| year = 1984 | |||
| pages = 513–561 | |||
| place = Tucson | |||
| publisher = [[University of Arizona Press]] | |||
| url = http://adsabs.harvard.edu/abs/1984prin.conf.....G | |||
| doi = | |||
| postscript = <!--None--> }}</ref> Saturn's rings (particularly the [[Rings of Saturn#A Ring|A Ring]]) contain a great many spiral density waves and spiral bending waves excited by [[Lindblad resonances]] and vertical resonances (respectively) with [[Moons of Saturn|Saturn's moons]]. The physics are largely the same as with galaxies, though spiral waves in Saturn's rings are much more tightly wound (extending a few hundred kilometers at most) due to the very large central mass (Saturn itself) compared to the mass of the disk.<ref name="Shu84" /> The [[Cassini-Huygens|''Cassini'' mission]] has revealed very small density waves excited by the ring-moons [[Pan (moon)|Pan]] and [[Atlas (moon)|Atlas]] and by high-order resonances with the larger moons,<ref name="Tiscareno2007a">{{cite journal | |||
| last = Tiscareno | |||
| first = M.S. | |||
| authorlink = | |||
| coauthors = Burns, J.A.; Nicholson, P.D.; Hedman, M.M.; [[Carolyn Porco|Porco, C.C.]] | |||
| title = Cassini imaging of Saturn's rings II. A wavelet technique for analysis of density waves and other radial structure in the rings | |||
| journal = [[Icarus (journal)|Icarus]] | |||
| volume = 189 | |||
| issue = 1 | |||
| pages = 14–34 | |||
| publisher = [[Elsevier]] | |||
| date = July 2007 | |||
| url = | |||
| doi = 10.1016/j.icarus.2006.12.025| bibcode=2007Icar..189...14T|arxiv = astro-ph/0610242 }}</ref> as well as waves whose form changes with time due to the varying orbits of [[Janus (moon)|Janus]] and [[Epimetheus (moon)|Epimetheus]].<ref name="Tiscareno2006a">{{cite journal | |||
| last = Tiscareno | |||
| first = M.S. | |||
| authorlink = | |||
| coauthors = Nicholson, P.D.; Burns, J.A.; Hedman, M.M.; [[Carolyn Porco|Porco, C.C.]] | |||
| title = Unravelling temporal variability in Saturn's spiral density waves: Results and predictions | |||
| journal = [[Astrophysical Journal]] | |||
| volume = 651 | |||
| issue = 1| pages = L65–L68 | |||
| publisher = [[American Astronomical Society]] | |||
| date = 2006-11-01 | |||
| doi = 10.1086/509120| bibcode=2006ApJ...651L..65T|arxiv = astro-ph/0609242 }}</ref> | |||
==See also== | |||
* [[Magellanic spiral galaxy]] | |||
* [[Barred spiral galaxy]] | |||
* [[Spiral galaxy]] | |||
* [[Galaxy]] | |||
==References== | |||
{{reflist|2}} | |||
==External sources== | |||
* Bertin, Giuseppe. 2000. ''Dynamics of Galaxies.'' Cambridge: Cambridge University Press. | |||
* Bertin, G. and C.C. Lin. 1996. ''Spiral Structure in Galaxies: A Density Wave Theory.'' Cambridge: MIT Press. | |||
* C.C. Lin, Yuan, C., and F.H. Shu, [http://adsabs.harvard.edu/abs/1969ApJ...155..721L "On the Spiral Structure of Disk i Galaxies III. Comparison with Observations"], Ap.J. 155, 721 (1969). (SCI) | |||
* Yuan, C.,[http://adsabs.harvard.edu/cgi-bin/bib_query?1969ApJ...158..889Y "Application of Density-Wave Theory to the Spiral Structure of the Milky Way System I. Systematic Motion of Neutral Hydrogen"], Ap.J., 158, 871 (1969). (SCI) | |||
==External links== | |||
* Britannica.com: [http://www.britannica.com/EBchecked/topic/157996/density-wave-theory Density Wave Theory (galactic structure)] | |||
* Internet Encyclopedia of Science: [http://www.daviddarling.info/encyclopedia/D/densitywave.html Density Wave] | |||
* UOttawa FactGuru: [http://www.site.uottawa.ca:4321/astronomy/densitywavetheory.html Density Wave Theory] | |||
{{Galaxy}} | |||
[[Category:Extragalactic astronomy]] | |||
[[Category:Galactic astronomy]] | |||
Revision as of 19:36, 8 April 2013
Density wave theory or the Lin-Shu density wave theory is a theory proposed by C.C. Lin and Frank Shu in the mid-1960s to explain the spiral arm structure of spiral galaxies. Their theory introduces the idea of long-lived quasistatic density waves (also called heavy sound),[1] which are sections of the galactic disk that have greater mass density (about 10–20% greater).[2] The theory has also been successfully applied to Saturn's rings.
Galactic spiral arms
Originally, astronomers had the idea that the arms of a spiral galaxy were material. However, if this were the case, then the arms would become more and more tightly wound, since the matter nearer to the center of the galaxy rotates faster than the matter at the edge of the galaxy. The arms would become indistinguishable from the rest of the galaxy after only a few orbits. This is called the winding problem.[2]
Lin and Shu proposed in 1964 that the arms were not material in nature, but instead made up of areas of greater density, similar to a traffic jam on a highway.[3] The cars move through the traffic jam: the density of cars increases in the middle of it. The traffic jam itself, however, does not move (or not a great deal, in comparison to the cars). In the galaxy, stars, gas, dust, and other components move through the density waves, are compressed, and then move out of them.
More specifically, the density wave theory argues that the "gravitational attraction between stars at different radii" prevents the so-called winding problem, and actually maintains the spiral pattern.[4]
The rotation speed of the arms is defined to be , the global pattern speed. (Thus, within a certain non-inertial reference frame, which is rotating at , the spiral arms appear to be at rest). The stars within the arms are not necessarily stationary, though at a certain distance from the center, , the corotation radius, the stars and the density waves move together. Inside that radius, stars move more quickly () than the spiral arms, and outside, stars move more slowly ().[2] It is easy to see that for an m-armed spiral, a star at radius R from the center will move through the structure with a frequency . So, the gravitational attraction between stars can only maintain the spiral structure if the frequency at which a star passes through the arms is less than the epicyclic frequency, , of the star. This means that a long-lived spiral structure will only exist between the inner and outer Lindblad resonance (ILR, OLR, respectively), which are defined as the radii such that: and , respectively. Past the OLR and within the ILR, the extra density in the spiral arms pulls more often than the epicyclic rate of the stars, and the stars are thus unable to react and move in such a way as to "reinforce the spiral density enhancement".[4]
-
Animation 1: If the spiral arms were rigid mass concentration the galaxy must rotate as a whole around its center in order to maintain its spiral structure. According to Lindblads observation and the laws of physics this is not the case. -
Animation 2: Differential rotation as observed by Lindblad would dissolve spiral arms in a short period of time were they composed of fixed mass concentrations.
-
Animation 3: Orbits predicted by the density wave theory allow the existence of stable spiral arms. Stars move in and out of the spiral arms as they orbit the galaxy.
Further implications
The Density Wave Theory also explains a number of other observations that have been made about spiral galaxies. For example, "the ordering of H I clouds and dust bands on the inner edges of spiral arms, the existence of young, massive stars and H II regions throughout the arms, and an abundance of old, red stars in the remainder of the disk".[2] Basically, when clouds of gas and dust enter into a density wave and are compressed the rate of star formation increases as some clouds meet the Jeans criterion, and collapse to form new stars. Since star formation does not happen immediately, the stars are slightly behind the density waves. The hot OB stars that are created ionize the gas of the interstellar medium, and form H II regions. These stars have relatively short lifetimes, however, and expire before fully leaving the density wave. The smaller, redder stars do leave the wave, and become distributed throughout the galactic disk.
Application to Saturn's rings
Beginning in the late 1970s, Peter Goldreich, Frank Shu, and others applied density wave theory to the rings of Saturn.[5][6][7] Saturn's rings (particularly the A Ring) contain a great many spiral density waves and spiral bending waves excited by Lindblad resonances and vertical resonances (respectively) with Saturn's moons. The physics are largely the same as with galaxies, though spiral waves in Saturn's rings are much more tightly wound (extending a few hundred kilometers at most) due to the very large central mass (Saturn itself) compared to the mass of the disk.[7] The Cassini mission has revealed very small density waves excited by the ring-moons Pan and Atlas and by high-order resonances with the larger moons,[8] as well as waves whose form changes with time due to the varying orbits of Janus and Epimetheus.[9]
See also
References
43 year old Petroleum Engineer Harry from Deep River, usually spends time with hobbies and interests like renting movies, property developers in singapore new condominium and vehicle racing. Constantly enjoys going to destinations like Camino Real de Tierra Adentro.
External sources
- Bertin, Giuseppe. 2000. Dynamics of Galaxies. Cambridge: Cambridge University Press.
- Bertin, G. and C.C. Lin. 1996. Spiral Structure in Galaxies: A Density Wave Theory. Cambridge: MIT Press.
- C.C. Lin, Yuan, C., and F.H. Shu, "On the Spiral Structure of Disk i Galaxies III. Comparison with Observations", Ap.J. 155, 721 (1969). (SCI)
- Yuan, C.,"Application of Density-Wave Theory to the Spiral Structure of the Milky Way System I. Systematic Motion of Neutral Hydrogen", Ap.J., 158, 871 (1969). (SCI)
External links
- Britannica.com: Density Wave Theory (galactic structure)
- Internet Encyclopedia of Science: Density Wave
- UOttawa FactGuru: Density Wave Theory
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Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang - ↑ 4.0 4.1 20 year-old Real Estate Agent Rusty from Saint-Paul, has hobbies and interests which includes monopoly, property developers in singapore and poker. Will soon undertake a contiki trip that may include going to the Lower Valley of the Omo.
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In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang
Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang - ↑ One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting
In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang
Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang - ↑ 7.0 7.1 20 year-old Real Estate Agent Rusty from Saint-Paul, has hobbies and interests which includes monopoly, property developers in singapore and poker. Will soon undertake a contiki trip that may include going to the Lower Valley of the Omo.
My blog: http://www.primaboinca.com/view_profile.php?userid=5889534 - ↑ One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting
In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang
Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang - ↑ One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting
In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang
Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules
Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.
A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running
The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more
There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang