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Psi9 Aurigae: Difference between revisions

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}}
{{Starbox character
| class = B8&nbsp;IIIe<ref name=mnras389_2_869pasp101_839/>
| r-i =
| v-r =
| b-v = -0–0.06<ref name=apj137_530/>
| u-b = -0–0.46<ref name=apj137_530/>
| variable =
}}
{{Starbox astrometry
| radial_v = -41–41.1<ref name=gcsrv/>
| prop_mo_ra = -2–2.93<ref name=aaa474_2_653/>
| prop_mo_dec = +4.07<ref name=aaa474_2_653/>
| parallax = 2.59
| p_error = 0.38
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{{Starbox end}}
 
'''Psi<sup>9</sup> Aurigae''' (ψ<sup>9</sup> Aur, ψ<sup>9</sup> Aurigae) is the [[Bayer designation]] for a [[star]] in the northern [[constellation]] of [[Auriga (constellation)|Auriga]]. It is dimly visible to the naked eye with an [[apparent visual magnitude]] of 5.75.<ref name=aaa367_521/> Based upon an annual [[parallax]] shift of 2.59&nbsp;[[milliarcsecond|mas]],<ref name=aaa474_2_653/> the distance to this star is approximately {{Convert|1300|ly|pc|abbr=off|lk=on}}.
 
The [[spectrum]] of Psi<sup>9</sup> Aurigae matches a [[giant star]] with a [[stellar classification]] of B8&nbsp;IIIe.<ref name=pasp101_839/> The 'e' suffix indicates this is a [[Be star]] that shows emission lines of hydrogen in its spectrum. This is caused by a circumstellar shell of hot gas. The emission undergoes variability on a time scale of sixteen years.<ref name=pasp101_839/>
ψ<sup>9</sup> Aurigae is a blue-white [[stellar classification|B-type]] [[giant star|giant]] with an [[apparent magnitude]] of +5.85. It is approximately 826 [[light-years]] from [[Earth]].
 
==References==
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<ref name=apj137_530>{{citation | last1=Crawford | first=D. L. | title=U, b, v, and Hβ Photometry for the Bright B8- and B9-TYPE Stars | journal=Astrophysical Journal | volume=137 | page=530 | month=February | year=1963 | doi=10.1086/147526 | bibcode=1963ApJ...137..530C | postscript=. }}</ref>
 
<ref name=mnras389_2_869>{{citation | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | month=September | year=2008 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | postscript=. }}</ref>▼
 
<ref name=SIMBAD>{{citation | title=HR 2568 -- Be Star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+50658 | accessdate=2012-08-23 | postscript=. }}</ref>
 
<ref name=aaa367_521>{{citation | display-authors=1 | last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L. | last3=Covino | first3=S. | last4=Pozzi | first4=A. | title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics | journal=Astronomy and Astrophysics | volume=367 | pages=521–524 | month=February | year=2001 | doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289 | postscript=. }}</ref>
 
▲<ref name=mnras389_2_869pasp101_839>{{citation | last1=EggletonGhosh | first1=PK. P. | last2=Tokovinin | first2=A. AK. | title=ASearch cataloguefor ofrapid multiplicityspectral amongvariability brightin stellarPsi(9) systemsAurigae | journal=Monthly NoticesPublications of the Royal Astronomical Society |of volume=389the Pacific | issuevolume=2101 | pages=869–879839–843 | month=September | year=20081989 | doi=10.11111086/j.1365-2966.2008.13596.x132504 | bibcode=2008MNRAS1989PASP.389.101.869E | arxiv=0806.2878839G | postscript=. }}</ref>
 
}}
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* [http://aladin.u-strasbg.fr/AladinPreview?-c=06+56+32.0573%2B46+16+26.394&ident=HD++50658&submit=Aladin+previewer Image Psi9 Aurigae]
 
{{giant-star-stub}}
{{var-star-stub}}
{{Stars of Auriga}}
 
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