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| {{Starbox begin
| | Wilber Berryhill is the title his mothers and fathers gave him and he completely digs that name. Kentucky is exactly where I've always been residing. To perform lacross is the factor I love most of all. For years she's been operating as a journey agent.<br><br>Also visit my web page :: [http://srncomm.com/blog/2014/08/25/relieve-that-stress-find-a-new-hobby/ psychics online] |
| | name = Upsilon Aurigae
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| }}
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| {{Starbox image
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| | image =
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| <div style="position: relative">[[File:Auriga IAU.svg|250px|alt=Diagram showing star positions and boundaries of the Auriga constellation and its surroundings]]
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| <div style="position: absolute; left: 45.5%; top: 45.2%;">[[File:Cercle rouge 100%.svg|12px]]</div>
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| </div>
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| | caption = The location of υ Aurigae (circled)
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| }}
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| {{Starbox observe
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| | epoch = J2000
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| | ra = {{RA|05|51|02.43724}}<ref name=aaa474_2_653/>
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| | dec = {{DEC|+37|18|20.0565}}<ref name=aaa474_2_653/>
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| | appmag_v = 4.74<ref name=clpl4_99/>
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| | constell = [[Auriga (constellation)|Auriga]]
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| }}
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| {{Starbox character
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| | class = M0 III<ref name=apj518_2_859/>
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| | r-i = 1.07
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| | v-r =
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| | b-v = +1.62<ref name=clpl4_99/>
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| | u-b = +1.93<ref name=clpl4_99/>
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| | variable =
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| }}
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| {{Starbox astrometry
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| | radial_v = +37.68<ref name=aaa430_165/>
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| | prop_mo_ra = +36.85<ref name=aaa474_2_653/>
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| | prop_mo_dec = -45.52<ref name=aaa474_2_653/>
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| | parallax = 6.24
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| | p_error = 0.65
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| | parallax_footnote = <ref name=aaa474_2_653/>
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| | absmag_v =
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| }}
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| {{Starbox detail
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| | mass =
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| | radius = 73<ref name=lang2006/>
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| | luminosity =
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| | temperature =
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| | metal_fe =
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| | rotational_velocity =
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| | age_gyr =
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| }}
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| {{Starbox catalog
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| | names = 31 Aurigae, [[Bonner Durchmusterung|BD]]+37 1336, [[Fifth Fundamental Catalogue|FK5]] 2440, [[Henry Draper Catalogue|HD]] 38944, [[Hipparcos catalogue|HIP]] 27639, [[Harvard Revised catalogue|HR]] 2011, [[Smithsonian Astrophysical Observatory catalogue|SAO]] 58496.<ref name=SIMBAD/>
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| }}
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| {{Starbox end}}
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| '''Upsilon Aurigae''' (υ Aur, υ Aurigae) is the [[Bayer designation]] for a [[star]] in the northern [[constellation]] of [[Auriga (constellation)|Auriga]]. It has an [[apparent visual magnitude]] of 4.74,<ref name=clpl4_99/> which means it is bright enough to be seen with the naked eye. Based upon [[parallax]] measurements made during the [[Hipparcos]] mission, this star is approximately {{Convert|520|ly|pc|abbr=off|lk=on}} distant from the Earth.
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| This is an [[stellar evolution|evolved]] [[red giant]] star with a [[stellar classification]] of M0 III.<ref name=apj518_2_859/> It is a suspected [[variable star]]<ref name=ibvs1531_1/> and is currently on the [[asymptotic giant branch]], which means it is generating energy at its core through the fusion of helium.<ref name=aj104_1_275/> The measured [[angular diameter]] of this star, after correction for [[limb darkening]], is {{nowrap|4.24 ± 0.05 [[milliarcsecond|mas]]}}.<ref name=aaa431_773/> At the estimated distance of Upsilon Aurigae,<ref name=aaa474_2_653/> this yields a physical size of about 73 times the [[Solar radius|radius of the Sun]].<ref name=lang2006/>
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| ==References==
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| {{reflist|refs=
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| <ref name=aaa474_2_653>{{citation | first1=Floor | last1=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | arxiv=0708.1752v1 | doi=10.1051/0004-6361:20078357 | journal=Astronomy and Astrophysics | postscript=. }} ''Note:'' see VizieR catalogue [http://vizier.u-strasbg.fr/viz-bin/Cat?I/311 I/311].</ref> | |
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| <ref name=clpl4_99>{{citation | last1=Johnson | display-authors=1 | first1=H. L. | last2=Iriarte | first2=B. | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. | title=UBVRIJKL photometry of the bright stars | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | year=1966 | bibcode=1966CoLPL...4...99J }}</ref>
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| <ref name=aaa430_165>{{citation | display-authors=1 | last1=Famaey | first1=B. | last2=Jorissen | first2=A. | last3=Luri | first3=X. | last4=Mayor | first4=M. | last5=Udry | first5=S. | last6=Dejonghe | first6=H. | last7=Turon | first7=C. | title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters | journal=Astronomy and Astrophysics | volume=430 | issue=1 | pages=165–186 |date=January 2005 | doi=10.1051/0004-6361:20041272 | bibcode=2005A&A...430..165F | arxiv=astro-ph/0409579 | postscript=. }}</ref>
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| <ref name=apj518_2_859>{{citation | last1=Keenan | first1=Philip C. | last2=Barnbaum | first2=Cecilia | title=Revision and Calibration of MK Luminosity Classes for Cool Giants by HIPPARCOS Parallaxes | journal=The Astrophysical Journal | volume=518 | issue=2 | pages=859–865 |date=June 1999 | doi=10.1086/307311 | bibcode=1999ApJ...518..859K | postscript=. }}</ref>
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| <ref name=SIMBAD>{{citation | title=ups Aur -- Variable Star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Upsilon+Aurigae | accessdate=2012-08-23 | postscript=. }}</ref>
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| <ref name=aaa431_773>{{citation | last1=Richichi | pages=A. | last2=Percheron | first2=I. | last3=Khristoforova | first3=M. | title=CHARM2: An updated Catalog of High Angular Resolution Measurements | journal=Astronomy and Astrophysics | volume=431 | pages=773–777 |date=February 2005 | doi=10.1051/0004-6361:20042039 | bibcode=2005A&A...431..773R | postscript=. }}</ref>
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| <ref name=lang2006>{{citation | first1=Kenneth R. | last1=Lang | title=Astrophysical formulae | volume=1 | series=Astronomy and astrophysics library | edition=3 | publisher=Birkhäuser | year=2006 | isbn=3-540-29692-1 | url=http://books.google.com/books?id=OvTjLcQ4MCQC&pg=PA41 }}. The radius (R<sub>*</sub>) is given by:
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| :<math>\begin{align} 2\cdot R_*
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| & = \frac{(160\cdot 4.24 \cdot 10^{-3})\ \text{AU}}{0.0046491\ \text{AU}/R_{\bigodot}} \\
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| & \approx 146\cdot R_{\bigodot}
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| \end{align}</math></ref>
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| <ref name=ibvs1531_1>{{citation | display-authors=1 | last1=Hamada | first1=K. | last2=Owaki | first2=N. | last3=Tamura | first3=K. | last4=Mizuno | first4=M. | last5=Nitou | first5=S. | last6=Inagoya | first6=S. | last7=Simoda | first7=M. | title=On the Variability of upsilon Aurigae | journal=Information Bulletin on Variable Stars | volume=1531 | page=1 |date=January 1979 | bibcode=1979IBVS.1531....1H | postscript=. }}</ref>
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| <ref name=aj104_1_275>{{citation | last1=Eggen | first1=Olin J. | title=Asymptotic giant branch stars near the sun | journal=Astronomical Journal | volume=104 | issue=1 |date=July 1992 | pages=275–313 | doi=10.1086/116239 | bibcode=1992AJ....104..275E | postscript=. }}</ref>
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| ==External links==
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| * [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%202011 HR 2011]
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| * [http://aladin.u-strasbg.fr/AladinPreview?-c=05+51+02.4374%2B37+18+20.063&ident=SV*+ZI+++486&submit=Aladin+previewer Image Upsilon Aurigae]
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| {{Stars of Auriga}}
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| [[Category:Henry Draper Catalogue objects|38944]]
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| [[Category:Hipparcos objects|027639]]
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| [[Category:Bayer objects|Aurigae, Upsilon]]
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| [[Category:Auriga (constellation)]]
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| [[Category:M-type giants]]
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Wilber Berryhill is the title his mothers and fathers gave him and he completely digs that name. Kentucky is exactly where I've always been residing. To perform lacross is the factor I love most of all. For years she's been operating as a journey agent.
Also visit my web page :: psychics online