PG 1047+003

PG 1047+003
	; A white light light curve for UY Sextantis, adapted from Billeres et al. (1997).[1] All five panels form a single 10,000 second light curve, with the top panel continued on the second panel, etc.
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Sextans
Right ascension	10h 50m 02.826s[2]
Declination	−00° 00′ 36.88″[2]
Apparent magnitude (V)	13.47
Characteristics
Spectral type	sdO9VII:He6[3]
Variable type	V361 Hya[1]
Astrometry
Radial velocity (Rv)	13.6[4] km/s
Proper motion (μ)	RA: −20.528 mas/yr[2] ; Dec.: −38.421 mas/yr[2]
Parallax (π)	1.4559 ± 0.0789 mas[2]
Distance	2,200 ± 100 ly ; (690 ± 40 pc)
Details
Mass	0.490±0.014[5] M☉
Radius	0.17±0.01[5] R☉
Luminosity	25.86+3.28; −2.61[5] L☉
Surface gravity (log g)	5.83±0.01[4] cgs
Temperature	34,850±90[4] K
Rotation	24.6±3.5 d[5]
Other designations
	UY Sex, GSC 04914-00003, 2MASS J10500281-0000369[6]
Database references
SIMBAD	data

PG 1047+003 is a post-AGB blue-white subdwarf star, located in the constellation of Sextans. The star is classed as member of the V361 Hydrae type (or also called sdBV_r type) class of pulsators in the field of asteroseismology.[1] No additional stellar companion has been detected in tight orbit or imaged around the subdwarf star.[7]

References

Billeres; et al. (1997). "Discovery of p-mode Instabilities in the Hot Subdwarf B Star PG 1047+003". Astrophysical Journal Letters. 487 (1): 81–84. Bibcode:1997ApJ...487L..81B. doi:10.1086/310882.
Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
Drilling, J. S.; et al. (2013). "An MK-like system of spectral classification for hot subdwarfs". Astronomy & Astrophysics. 551: A31. Bibcode:2013A&A...551A..31D. doi:10.1051/0004-6361/201219433.
Lei, Zhenxin; et al. (November 2018). "New Hot Subdwarf Stars Identified in Gaia DR2 with LAMOST DR5 Spectra". The Astrophysical Journal. 868 (1): 9. arXiv:1810.09625. Bibcode:2018ApJ...868...70L. doi:10.3847/1538-4357/aae82b. S2CID 250892206. 70.
Reed, M. D.; et al. (March 2020). "K2 observations of the pulsating subdwarf B stars UY Sex and V1405 Ori". Monthly Notices of the Royal Astronomical Society. 492 (4): 5202–5217. Bibcode:2020MNRAS.492.5202R. doi:10.1093/mnras/staa144.
"UY Sex". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-01-26.{{cite web}}: CS1 maint: postscript (link)
O'Donoghue; Koen; Lynas-Gray; Kilkenny; Van Wyk (1998). "The EC14026 stars - VI. PG1047+003". Monthly Notices of the Royal Astronomical Society. 296 (2): 306–316. Bibcode:1998MNRAS.296..306O. doi:10.1046/j.1365-8711.1998.01311.x.

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[Billeres_et_al.-1] Billeres; et al. (1997). "Discovery of p-mode Instabilities in the Hot Subdwarf B Star PG 1047+003". Astrophysical Journal Letters. 487 (1): 81–84. Bibcode:1997ApJ...487L..81B. doi:10.1086/310882.

[GaiaDR2-2] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[Drilling_et_al_2013-3] Drilling, J. S.; et al. (2013). "An MK-like system of spectral classification for hot subdwarfs". Astronomy & Astrophysics. 551: A31. Bibcode:2013A&A...551A..31D. doi:10.1051/0004-6361/201219433.

[Zhenxin_et_al_2018-4] Lei, Zhenxin; et al. (November 2018). "New Hot Subdwarf Stars Identified in Gaia DR2 with LAMOST DR5 Spectra". The Astrophysical Journal. 868 (1): 9. arXiv:1810.09625. Bibcode:2018ApJ...868...70L. doi:10.3847/1538-4357/aae82b. S2CID 250892206. 70.

[Reed_et_al_2020-5] Reed, M. D.; et al. (March 2020). "K2 observations of the pulsating subdwarf B stars UY Sex and V1405 Ori". Monthly Notices of the Royal Astronomical Society. 492 (4): 5202–5217. Bibcode:2020MNRAS.492.5202R. doi:10.1093/mnras/staa144.

[SIMBAD-6] "UY Sex". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-01-26.{{cite web}}: CS1 maint: postscript (link)

[O'Donoghue_et_al.-7] O'Donoghue; Koen; Lynas-Gray; Kilkenny; Van Wyk (1998). "The EC14026 stars - VI. PG1047+003". Monthly Notices of the Royal Astronomical Society. 296 (2): 306–316. Bibcode:1998MNRAS.296..306O. doi:10.1046/j.1365-8711.1998.01311.x.