AH Scorpii
AH Scorpii(shortened asAH Sco) is ared supergiantvariable starin theconstellationScorpius.It is a very large star at 1,411 times theradiusof our Sun and one of the mostluminousstars of its type. It isone of the largest starsin theMilky Way.
 | |
| Observation data EpochJ2000EquinoxJ2000 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17h11m17.01945s[1] |
| Declination | −32° 19′ 30.7140″[1] |
| Apparent magnitude(V) | 6.5 - 9.6[2] |
| Characteristics | |
| Spectral type | M4-5 Ia-Iab[3] |
| B−Vcolor index | +2.57[4] |
| Variable type | SRc[3] |
| Astrometry | |
| Radial velocity(Rv) | −13.40±2.4[5]km/s |
| Proper motion(μ) | RA:−2.322±0.115[1]mas/yr Dec.:−2.610±0.068[1]mas/yr |
| Parallax(π) | 0.5632 ± 0.0799[1]mas |
| Distance | 7,400ly (2,260[6]pc) |
| Absolute magnitude(MV) | −5.8[7] |
| Details | |
| Mass | 10[6]M☉ |
| Radius | 1,411[4]R☉ |
| Luminosity | 330,000+270,000 −150,000[4]L☉ |
| Surface gravity(logg) | −0.5[4]cgs |
| Temperature | 3,450[8]- 3,682[4]K |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
[change|change source]- ↑1.01.11.21.31.4Brown, A. G. A (2020)."Gaia Early Data Release 3: Summary of the contents and survey properties".Astronomy & Astrophysics.arXiv:2012.01553.Bibcode:2021A&A...649A...1G.doi:10.1051/0004-6361/202039657.
- ↑Kiss, L. L.; Szabó, Gy. M.;Bedding, T. R.(2006). "Variability in red supergiant stars: Pulsations, long secondary periods and convection noise".Monthly Notices of the Royal Astronomical Society.372(4): 1721–1734.arXiv:astro-ph/0608438.Bibcode:2006MNRAS.372.1721K.doi:10.1111/j.1365-2966.2006.10973.x.S2CID5203133.
{{cite journal}}:CS1 maint: unflagged free DOI (link) - ↑3.03.1Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)".VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S.1.Bibcode:2009yCat....102025S.
- ↑4.04.14.24.34.4Arroyo-Torres, B.; Wittkowski, M.; Marcaide, J. M.; Hauschildt, P. H. (2013). "The atmospheric structure and fundamental parameters of the red supergiants AH Scorpii, UY Scuti, and KW Sagittarii".Astronomy & Astrophysics.554:A76.arXiv:1305.6179.Bibcode:2013A&A...554A..76A.doi:10.1051/0004-6361/201220920.S2CID73575062.
- ↑Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system".Astronomy Letters.32(11): 759–771.arXiv:1606.08053.Bibcode:2006AstL...32..759G.doi:10.1134/S1063773706110065.S2CID119231169.
- ↑6.06.1Chen, Xi; Shen, Zhi-Qiang (2008). "VLBI Observations of SiO Masers around AH Scorpii".The Astrophysical Journal.681(2): 1574–1583.arXiv:0803.1690.Bibcode:2008ApJ...681.1574C.doi:10.1086/588186.S2CID7603031.
- ↑Baudry, A.; Le Squeren, A. M.; Lepine, J. R. D. (1977). "The supergiant OH stars S Per and AH SCO - Conditions for OH emission in circumstellar envelopes".Astronomy and Astrophysics.54:593.Bibcode:1977A&A....54..593B.
- ↑Messineo, M.; Brown, A. G. A. (2019)."A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2".The Astronomical Journal.158(1): 20.arXiv:1905.03744.Bibcode:2019AJ....158...20M.doi:10.3847/1538-3881/ab1cbd.S2CID148571616.