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Single star in the constellation Carina
This article is about k Carinae. For K Carinae, see
HR 4138 .
HD 81101 is a single[ 7] star in the southern constellation of Carina . It has the Bayer designation k Carinae , while HD 81101 is the star's designation in the Henry Draper catalogue apparent visual magnitude of 4.79.[ 2] light years from the Sun based on parallax .[ 1] radial velocity of +51 km/s,[ 1] [ 8]
This is an aging giant star with a stellar classification of G6III,[ 3] core then cooled and expanded away from the main sequence . It is two[ 4] [ 4] mass of the Sun and has expanded to 11[ 1] Sun's radius . The star is radiating 65[ 1] luminosity of the Sun from its swollen photosphere at an effective temperature of 4,908 K.[ 1] [ 9] metallicity of the star's stellar atmosphere is much lower than solar .[ 5]
^ a b c d e f g h i j k l m n Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties" . Astronomy & Astrophysics 616 . A1. arXiv :1804.09365 Bibcode :2018A&A...616A...1G doi :10.1051/0004-6361/201833051 Gaia DR2 record for this source at VizieR .^ a b c d 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 Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars , vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode :1978mcts.book.....H ^ a b c d Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal , 150 (3), 88, arXiv :1507.01466 Bibcode :2015AJ....150...88L , doi :10.1088/0004-6256/150/3/88 , S2CID 118505114 . ^ a b c Alves, S.; et al. (April 2015), "Determination of the spectroscopic stellar parameters for 257 field giant stars", Monthly Notices of the Royal Astronomical Society , 448 (3): 2749–2765, arXiv :1503.02556 Bibcode :2015MNRAS.448.2749A , doi :10.1093/mnras/stv189 ^ "HD 81101" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2020-01-26 .^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, arXiv :0806.2878 Bibcode :2008MNRAS.389..869E , doi :10.1111/j.1365-2966.2008.13596.x S2CID 14878976 . ^ Bailer-Jones, C. A. L. (March 2015), "Close encounters of the stellar kind", Astronomy & Astrophysics , 575 : 13, arXiv :1412.3648 Bibcode :2015A&A...575A..35B , doi :10.1051/0004-6361/201425221 , S2CID 59039482 , A35. ^ Eggen, Olin J. (April 1989), "Large and Kinematically Unbiased Samples of G- and K-Type Stars. IV. Evolved Stars of the Old Disk Population", Publications of the Astronomical Society of the Pacific , 101 : 366, Bibcode :1989PASP..101..366E , doi :10.1086/132442 S2CID 121365843 .
