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Suspected binary star system in the constellation Carina
This article is about c Carinae. For
C Carinae , see
HD 69863 .
HD 76728 is a suspected astrometric binary [ 7] star system in the constellation Carina . It has the Bayer designation c Carinae ; HD 76728 is the identifier from the Henry Draper catalogue apparent visual magnitude of +3.84.[ 2] light years from the Sun based on parallax ,[ 1] radial velocity of around +25 km/s.[ 2] Volans-Carina Association of co-moving stars .[ 8]
The visible component is an aging bright giant star with a stellar classification of B8/9II.[ 3] spectrum of the star displays metallic lines of magnesium .[ 9] [ 8] [ 5] radius of the Sun and is radiating 449[ 2] Sun's luminosity from its photosphere at an effective temperature of 11,880 K.[ 5]
^ 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 c d e f g h 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 ^ Adelman, S. J.; et al. (September 2000), "On the Variability of O and B Supergiants", Information Bulletin on Variable Stars , 4946 : 1, Bibcode :2000IBVS.4946....1A . ^ a b c d Underhill, A. B.; et al. (November 1979), "Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars", Monthly Notices of the Royal Astronomical Society 189 (3): 601–605, Bibcode :1979MNRAS.189..601U , doi :10.1093/mnras/189.3.601 ^ "HD 76728" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2020-01-20 .^ 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 ^ a b Gagné, Jonathan; et al. (October 2018), "Volans-Carina: A New 90 Myr Old Stellar Association at 85 pc", The Astrophysical Journal , 865 (2): 13, arXiv :1808.04420 Bibcode :2018ApJ...865..136G , doi :10.3847/1538-4357/aadaed S2CID 119402144 , 136. ^ Garrison, R. F.; Gray, R. O. (April 1994), "The Late B-Type Stars: Refined MK Classification, Confrontation With Stromgren Photometry, And The Effects of Rotation", Astronomical Journal , 107 : 1556, Bibcode :1994AJ....107.1556G , doi :10.1086/116967 .
