12 Aurigae

Star in the constellation Auriga 12 Aurigae J2000 05 16 27.08298 +46 24 57.8118 6.988A new catalogue of Strömgren-Crawford uvbyβ photometry Astronomy & Astrophysics 580 A23 Paunzen E. 2015 2015A&A...580A..23P 10.1051/0004-6361/201526413 free 1506.04568 73623700 Auriga B2 VeThe Balmer Decrement in Some Be Stars Burbidge G. R. Burbidge E. Margaret Astrophysical Journal 118 252 September 1953 10.1086/145747 1953ApJ...118..252B free −3.321 −1.2106 1.5264 0.0303 211805079552264832 3.02022yCat.1354....0A VizieR Online Data Catalog: StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022) Anders F. Khalatyan A. Queiroz A. B. A. Chiappini C. Ardevol J. Casamiquela L. Figueras F. Jimenez-Arranz O. Jordi C. Monguio M. Romero-Gomez M. Altamirano D. Antoja T. Assaad R. Cantat-Gaudin T. Castro-Ginard A. Enke H. Girardi L. Guiglion G. Khan S. Luri X. Miglio A. Minchev I. Ramos P. Santiago B. X. Steinmetz M. Vizier Online Data Catalog 2022 18 635 8,6881 Stassun Keivan G. Oelkers Ryan J. Pepper Joshua Paegert Martin De Lee Nathan Torres Guillermo Latham David W. Charpinet Stéphane Dressing Courtney D. Huber Daniel Kane Stephen R. Lépine Sébastien Mann Andrew Muirhead Philip S. Rojas-Ayala Bárbara Silvotti Roberto Fleming Scott W. Levine Al Plavchan Peter The TESS Input Catalog and Candidate Target List The Astronomical Journal September 2018 156 3 102 10.3847/1538-3881/aad050 1706.00495 2018AJ....156..102S 0004-6256 free −0.94 2.47 100 41Rotational Velocity Determinations for 164 Be and B Stars Halbedel Elaine M. Publications of the Astronomical Society of the Pacific 108 833 September 1996 10.1086/133804 1996PASP..108..833H free 12 Aur +46°989 33988 40183 6424 47919 12 Aur 2019-04-04 12+Aur 12 Aurigae is a Be star in the northern constellation Auriga. It lies below the normal limit for visibility to the naked eye, having an apparent visual magnitude of 6.988. It lacks a designation from the Hipparcos catalogue. It is located just under half a degree north of Capella. Assigned spectral classes for 12 Aurigae vary greatly from B2 to B5 and the luminosity class from V (main sequence) to Ia (luminous supergiant). Its spectrum shows prominent emission lines, but the spectrum is complicated by the appearance of sharp shell components to some of the spectral lines.Rotational Velocity Determinations for 164 Be and B Stars Halbedel Elaine M. Publications of the Astronomical Society of the Pacific 108 833 September 1996 10.1086/133804 1996PASP..108..833H 119944672 free The colour of the star as shown by the B-V and U-B colour indices is not consistent with an early B spectral class,1991Ap&SS.186..161H Spectral reclassification of some be stars using ΔQ method Hamdy M. A. Elazm M. S. A. Saad S. M. Astrophysics and Space Science 1991 186 1 161 10.1007/BF00644632 123509301 leading to many estimates of its effective temperature that are much lower than expected for a B-class star. The expected temperature for a B5 spectral type would be 15,400 K commas,The Tycho-2 Spectral Type Catalog Wright Candace O. Egan Michael P. Kraemer Kathleen E. Price Stephan D. 1 The Astronomical Journal 2003 125 1 359 2003AJ....125..359W 10.1086/345511 122781581 free but most sources assign a temperature of around 8,000 K commas. Other properties also vary between different sources, for example the bolometric luminosity derived from the distance and temperature is 25 y, while it is 635 when derived by fitting the spectral energy distribution. McDonald I. Zijlstra A. A. Watson R. A. Fundamental parameters and infrared excesses of Tycho–Gaia stars Monthly Notices of the Royal Astronomical Society 15 June 2017 471 1 770–791 0035-8711 1365-2966 10.1093/mnras/stx1433 2017MNRAS.471..770M 1706.02208 free A calculation of the stellar properties assuming the maximum possible interstellar extinction in the direction of 12 Aurigae results in a temperature of 14336 K commas and a luminosity of 8,092, although it is strongly noted that the likely extinction is much lower. References Category:B-type main-sequence stars Category:Be stars Category:Auriga BD+46 0989 Aurigae, 12 033988