View source for Astronomy:PG 1047+003

{{short description|Subdwarf B star in the constellation Sextans}}
{{Starbox begin}}
{{Starbox image
| image = [[Image:UYSexLightCurve.png|250px]]
| caption = A white light [[Astronomy:Light curve|light curve]] for UY Sextantis, adapted from Billeres ''et al.'' (1997).<ref name="Billeres et al." /> All five panels form a single 10,000 second light curve, with the top panel continued on the second panel, etc.
}}
{{Starbox observe 
 | epoch       = [[Astronomy:J2000.0|J2000.0]]
 | constell    = Sextans
 | ra          = {{RA|10|50|02.826}}<ref name=GaiaDR2/>
 | dec         = {{DEC|-00|00|36.88}}<ref name=GaiaDR2/>
 | appmag_v    = 13.47
}} 
{{Starbox character 
 | type        = 
 | class       = sdO9VII:He6<ref name=Drilling_et_al_2013/>
 | b-v         = 
 | variable    = V361 Hya<ref name="Billeres et al." />
}} 
{{Starbox astrometry
 | radial_v    = 13.6<ref name=Zhenxin_et_al_2018/>
 | prop_mo_ra  = −20.528
 | prop_mo_dec = −38.421
 | pm_footnote = <ref name=GaiaDR2/>
 | parallax    = 1.4559
 | p_error     = 0.0789
 | parallax_footnote = <ref name=GaiaDR2/>
 | absmag_v    = 
}}
{{Starbox detail 
 | mass        = 0.490{{±|0.014}}<ref name=Reed_et_al_2020/>
 | radius      = 0.17{{±|0.01}}<ref name=Reed_et_al_2020/>
 | luminosity  = 25.86{{±|3.28|2.61}}<ref name=Reed_et_al_2020/>
 | temperature = 34,850{{±|90}}<ref name=Zhenxin_et_al_2018/>
 | gravity     = 5.83{{±|0.01}}<ref name=Zhenxin_et_al_2018/>
 | rotation    = {{val|24.6|3.5|u=days}}<ref name=Reed_et_al_2020/>
}} 
{{Starbox catalog 
 | names = {{odlist | V=UY Sex | 2MASS=J10500281-0000369 | PG=1047+003 | GSC=04914-00003 | MGC=12287 }}<ref name=SIMBAD/>
}}
{{Starbox reference
 | Simbad = UY+Sex
}}
{{Starbox end}}

'''PG 1047+003''' is a post-AGB blue-white subdwarf star, located in the [[Astronomy:Constellation|constellation]] of [[Astronomy:Sextans|Sextans]]. The star is classed as member of the V361 Hydrae type (or also called [[Astronomy:Subdwarf B star#Variables|sdBV<sub>r</sub>]] type) class of pulsators in the field of asteroseismology.<ref name="Billeres et al." /> No additional stellar companion has been detected in tight orbit or imaged around the subdwarf star.<ref name="O'Donoghue et al." />

==References==
{{reflist|refs=

<ref name=GaiaDR2>{{Cite Gaia DR2|3806303066866089216}}</ref>

<ref name=SIMBAD>{{cite simbad
 | title=UY Sex | access-date=2022-01-26 | postscript=. }}</ref>

<ref name=Reed_et_al_2020>{{cite journal
 | title=K2 observations of the pulsating subdwarf B stars UY Sex and V1405 Ori
 | last1=Reed | first1=M. D. | last2=Yeager | first2=M.
 | last3=Vos | first3=J. | last4=Telting | first4=J. H.
 | last5=Østensen | first5=R. H. | last6=Slayton | first6=A.
 | last7=Baran | first7=A. S. | last8=Jeffery | first8=C. S.
 | display-authors=1 | journal=Monthly Notices of the Royal Astronomical Society
 | volume=492 | issue=4 | pages=5202–5217 | date=March 2020
 | doi=10.1093/mnras/staa144 | bibcode=2020MNRAS.492.5202R | doi-access=free }}</ref>

<ref name=Zhenxin_et_al_2018>{{cite journal
 | title=New Hot Subdwarf Stars Identified in Gaia DR2 with LAMOST DR5 Spectra
 | last1=Lei | first1=Zhenxin | last2=Zhao | first2=Jingkun
 | last3=Németh | first3=Péter | last4=Zhao | first4=Gang
 | display-authors=1 | journal=The Astrophysical Journal
 | volume=868 | issue=1 | id=70 | pages=9
 | date=November 2018 | doi=10.3847/1538-4357/aae82b
 | arxiv=1810.09625 | bibcode=2018ApJ...868...70L | s2cid=250892206 | doi-access=free }}</ref>

<ref name=Drilling_et_al_2013>{{cite journal
 | title=An MK-like system of spectral classification for hot subdwarfs
 | display-authors=1 | last1=Drilling | first1=J. S.
 | last2=Jeffery | first2=C. S. | last3=Heber | first3=U.
 | last4=Moehler | first4=S. | last5=Napiwotzki | first5=R.
 | journal=Astronomy & Astrophysics
 | volume=551 | pages=A31 | year=2013
 | bibcode=2013A&A...551A..31D | doi-access=free
 | doi=10.1051/0004-6361/201219433 }}</ref>

<ref name="Billeres et al.">{{cite journal
 | author=Billeres| display-authors=0
 | title=Discovery of p-mode Instabilities in the Hot Subdwarf B Star PG 1047+003
 | journal=Astrophysical Journal Letters
 | volume=487 | pages=81–84| date=1997 | issue=1
 | bibcode=1997ApJ...487L..81B
 | doi = 10.1086/310882 | doi-access=free}}</ref>

<ref name="O'Donoghue et al.">{{cite journal
 | author=O'Donoghue| last2=Koen| last3=Lynas-Gray| last4=Kilkenny| last5=Van Wyk
 | title=The EC14026 stars - VI. PG1047+003
 | journal=[[Organization:Monthly Notices of the Royal Astronomical Society|Monthly Notices of the Royal Astronomical Society]]
 | volume=296 |issue=2 | pages=306–316 | date=1998
 | doi=10.1046/j.1365-8711.1998.01311.x
 | doi-access=free | bibcode=1998MNRAS.296..306O }}</ref>

}}

{{Stars of Sextans}}

{{DEFAULTSORT:PG 1047+003}}
[[Category:Objects with variable star designations|Sextantis, UY]]


{{Sourceattribution|PG 1047+003}}