View source for Astronomy:Gamma Pictoris

{{Short description|Star in the constellation Pictor}}
{{Starbox begin
| name = γ Pictoris
}}
{{Starbox image
|image=
{{Location mark
|image=Pictor constellation map.svg|alt=|float=center|width=280
|label=|position=right
|mark=Red circle.svg|mark_width=10|mark_link=Gamma Pictoris
|x=420|y=608
}}
|caption=Location of γ Pictoris (circled)
}}
{{Starbox observe
| epoch = J2000
| constell = Pictor
| ra = {{RA|05|49|49.66181}}<ref name=vanLeeuwen2007>{{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | last1=Van Leeuwen | first1=F. | s2cid=18759600 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%2027530 Vizier catalog entry]</ref>
| dec = {{DEC|-56|09|59.9808}}<ref name=vanLeeuwen2007/>
| appmag_v = 4.50<ref name=XHIP>{{cite journal | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | s2cid=119257644 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=27530 Vizier catalog entry]</ref>
}}
{{Starbox character
| class = K1&nbsp;III<ref name=Hoffleit1991>{{cite journal | bibcode=1995yCat.5050....0H | title=VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) | journal=VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H | volume=5050 | last1=Hoffleit | first1=D. | last2=Warren | first2=W. H. | year=1995 }}</ref>
| b-v = +1.10<ref name=Mallama2014>{{cite journal | bibcode=2014JAVSO..42..443M | title=Sloan Magnitudes for the Brightest Stars | journal=The Journal of the American Association of Variable Star Observers | volume=42 | pages=443 | last1=Mallama | first1=A. | year=2014 | issue=2 }}[http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/other/JAVSO/42.443/ugriz&HD=039523 Vizier catalog entry]</ref>
| u-b = +0.98<ref name=Mallama2014/>
}}
{{Starbox astrometry
| radial_v = {{Val|+15.7|0.8}}<ref name=Gontcharov2006>{{Cite journal | doi=10.1134/S1063773706110065 | bibcode=2006AstL...32..759G| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal=Astronomy Letters| volume=32| issue=11| pages=759–771| year=2006| last1=Gontcharov| first1=G. A.|arxiv = 1606.08053 | s2cid=119231169}}</ref>
| prop_mo_ra = +81.13<ref name=vanLeeuwen2007/>
| prop_mo_dec = −71.12<ref name=vanLeeuwen2007/>
| parallax = 18.45
| p_error = 0.15
| parallax_footnote = <ref name=vanLeeuwen2007/>
| absmag_v = 0.83<ref name=XHIP/>
}}
{{Starbox detail
| mass = 1.59<ref name=AllendePrieto>{{cite journal | bibcode=1999A&A...352..555A | arxiv=astro-ph/9911002 | title=Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures | journal=Astronomy and Astrophysics | volume=352 | pages=555–562 | last1=Allende Prieto | first1=C. | last2=Lambert | first2=D. L. | year=1999 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/352/555/table1&Name=HIP27530 Vizier catalog entry]</ref>
| radius = 11<ref name=AllendePrieto/>
| temperature = 4,600<ref name=Gontcharov2008>{{cite journal | bibcode=2008AstL...34..785G | doi=10.1134/S1063773708110078 | arxiv=1607.00619 | title=Red giant clump in the Tycho-2 catalogue | journal=Astronomy Letters | volume=34 | issue=11 | pages=785–796 | year=2009 | last1=Gontcharov | first1=G. A. | s2cid=73524157 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/PAZh/34/868/table&HIP=27530 Vizier catalog entry]</ref>
| luminosity = 60.75<ref name=XHIP/>
| rotational_velocity = 6.4<ref name=deMedeiros2014>{{cite journal | bibcode=2014A&A...561A.126D | doi=10.1051/0004-6361/201220762 | arxiv=1312.3474 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy & Astrophysics | volume=561 | pages=A126 | year=2014 | last1=De Medeiros | first1=J. R. | last2=Alves | first2=S. | last3=Udry | first3=S. | last4=Andersen | first4=J. | last5=Nordström | first5=B. | last6=Mayor | first6=M. | s2cid=54046583 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/561/A126/table1&HD=39523 Vizier catalog entry]</ref>
| gravity = 2.56<ref name=AllendePrieto/>
| metal_fe = +0.15<ref name=XHIP/>
}}
{{Starbox catalog
}}
{{Starbox reference
| Simbad = Gamma+Pictoris
}}
{{Starbox end}}

'''Gamma Pictoris''', [[Social:Latinisation of names|Latinised]] from '''γ Pictoris''', is a single,<ref name=Eggleton2008>{{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 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 | postscript=. }}</ref> orange-hued [[Astronomy:Star|star]] in the [[Astronomy:Southern celestial hemisphere|southern]] [[Astronomy:Constellation|constellation]] of Pictor. It is a faintly visible to the naked eye with an [[Astronomy:Apparent visual magnitude|apparent visual magnitude]] of 4.50.<ref name=XHIP/> Based upon an annual [[Astronomy:Stellar parallax|parallax shift]] of 18.45&nbsp;mas as seen from Earth,<ref name="vanLeeuwen2007"/> this star is located about 177&nbsp;[[Astronomy:Light-year|light-year]]s from the [[Astronomy:Sun|Sun]]. It is moving away from the Sun with a [[Astronomy:Radial velocity|radial velocity]] of +15.7&nbsp;km/s.<ref name=Gontcharov2006/>

This is an [[Astronomy:Stellar evolution|evolved]] [[Astronomy:K-type star|K-type]] [[Astronomy:Giant star|giant star]] with a [[Astronomy:Stellar classification|stellar classification]] of K1&nbsp;III.<ref name=Hoffleit1991/> It has 1.59 times the mass of the Sun, while its diameter has been estimated as around 11 times that of the Sun.<ref name=AllendePrieto/> The star is radiating 61<ref name=XHIP/> times the Sun's luminosity from its enlarged [[Astronomy:Photosphere|photosphere]] at an [[Astronomy:Effective temperature|effective temperature]] of around {{val|4600|ul=K|fmt=commas}}.<ref name=Gontcharov2008/>

==References==
{{reflist}}

{{Stars of Pictor}}

{{DEFAULTSORT:Gamma Pictoris}}
[[Category:K-type giants]]
[[Category:Pictor]]
[[Category:Bayer objects|Pictoris, Gamma]]
[[Category:Durchmusterung objects]]
[[Category:Henry Draper Catalogue objects|039523]]
[[Category:Hipparcos objects|027530]]
[[Category:Bright Star Catalogue objects|2042]]

{{Sourceattribution|Gamma Pictoris}}