Omicron Aurigae
Star in the constellation Auriga
Omicron Aurigae , Latinized from ο Aurigae , is the Bayer designation for an astrometric binary [ 10] star system in the northern constellation of Auriga . With an apparent visual magnitude of 5.47,[ 2] parallax shift of 7.89 ± 0.84 mas ,[ 1] light-years (127 parsecs ) distant from Earth. The star is a member of the Ursa Major stream of co-moving stars.[ 11]
The visible component is a chemically peculiar star with a stellar classification of A1 Cr Eu ; meaning this is an A-type star with a spectrum that shows abnormally high abundances of chromium (Cr) and europium (Eu).[ 3] X-ray emission with a luminosity of: log Lx = 29.1.[ 11] projected rotational velocity of 29 km/s[ 12] [ 6] Sun's luminosity from its photosphere at an effective temperature of 8,660 K.[ 8]
References
^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics , 474 (2): 653– 664, arXiv :0708.1752 Bibcode :2007A&A...474..653V , doi :10.1051/0004-6361:20078357 , S2CID 18759600 . ^ a b Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory , 4 (99): 99, Bibcode :1966CoLPL...4...99J . ^ a b Renson, P.; Manfroid, J. (May 2009), "Catalogue of Ap, HgMn and Am stars" , Astronomy and Astrophysics , 498 (3): 961– 966, Bibcode :2009A&A...498..961R , doi :10.1051/0004-6361/200810788 ^ Deutschman, W. A.; et al. (February 1976), "The galactic distribution of interstellar absorption as determined from the Celescope catalog of ultraviolet stellar observations and a new catalogue of UBV, Hbeta photoelectric observations", Astrophysical Journal Supplement Series , 30 : 97– 225, Bibcode :1976ApJS...30...97D , doi :10.1086/190359 ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics , 546 : 14, arXiv :1208.3048 Bibcode :2012A&A...546A..61D , doi :10.1051/0004-6361/201219219 , S2CID 59451347 , A61. ^ a b c Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331, arXiv :1108.4971 Bibcode :2012AstL...38..331A , doi :10.1134/S1063773712050015 , S2CID 119257644 . ^ a b c d Moiseeva, A. V.; et al. (January 2019), "Fundamental Parameters of CP Stars Observed at the 6-m Telescope. I. Observations in 2009–2011", Astrophysical Bulletin , 74 (1): 62– 65, Bibcode :2019AstBu..74...62M , doi :10.1134/S1990341319010061 . ^ a b McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society , 427 (1): 343– 357, arXiv :1208.2037 Bibcode :2012MNRAS.427..343M , doi :10.1111/j.1365-2966.2012.21873.x S2CID 118665352 . ^ "omi Aur" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2017-06-28 .^ Makarov, V. V.; Kaplan, G. H. (May 2005), "Statistical Constraints for Astrometric Binaries with Nonlinear Motion" (PDF) , The Astronomical Journal , 129 (5): 2420– 2427, Bibcode :2005AJ....129.2420M , doi :10.1086/429590 archived from the original on September 24, 2017. ^ a b Panzera, M. R.; et al. (August 1999), "X-ray emission from A0-F6 spectral type stars", Astronomy and Astrophysics , 348 : 161– 169, arXiv :astro-ph/9906221 Bibcode :1999A&A...348..161P . ^ Royer, F.; et al. (October 2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i", Astronomy and Astrophysics , 393 : 897– 911, arXiv :astro-ph/0205255 Bibcode :2002A&A...393..897R , doi :10.1051/0004-6361:20020943 , S2CID 14070763 .
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