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
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 ) ± 2.4[ 5] Proper motion (μ) RA: ± 0.115[ 1] mas /yr Dec.: ± 0.068[ 1] mas /yr Parallax (π) 0.5632 ± 0.0799[ 1] mas Distance ly [ 6] pc )Absolute magnitude (MV ) −5.8[ 7] Details Mass 10[ 6] M ☉ Radius [ 4] R ☉ Luminosity +270,000 [ 4] L ☉ Surface gravity (log g ) −0.5[ 4] cgs Temperature 3,450[ 8] [ 4] K Other designations AH Sco,
AN 223.1907,
GSC 07365-00527,
HD 155161,
HIP 84071,
CD −32°12429,
2MASS J17111702-3219308,
IRC −30282,
IRAS 17080-3215,
RAFGL 1927,
AAVSO 1704-32
Database references SIMBAD data
References
↑ 1.0 1.1 1.2 1.3 1.4 Brown, 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 . S2CID 5203133 . {{cite journal }}: CS1 maint: unflagged free DOI (link )↑ 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 Arroyo-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 . S2CID 73575062 . ↑ 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 . S2CID 119231169 . ↑ 6.0 6.1 Chen, 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 . S2CID 7603031 . ↑ 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 .
