AH Scorpii
AH Scorpii (shortened as AH Sco) is a red supergiant variable star in the constellation Scorpius. It is a very large star at 1,411 times the radius of our Sun and one of the most luminous stars of its type. It is one of the largest stars in the Milky Way.
AH Scorpii Media
A visual band light curve for AH Scorpii, plotted from AAVSO data
 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17h 11m 17.01945s[1] |
| Declination | -32° 19′ 30.7140″[1] |
| Apparent magnitude (V) | 6.5 - 9.6[2] |
| Characteristics | |
| Spectral type | M4-5 Ia-Iab[3] |
| B−V color 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 | 7,400 ly (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 (log g) | −0.5[4] cgs |
| Temperature | 3,450[8] - 3,682[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ 3.0 3.1 Samus, 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.
- ↑ 4.0 4.1 4.2 4.3 4.4 Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ 6.0 6.1 Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ 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. S2CID 148571616.