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Binary star system in the constellation of Boötes
HD 131473 is a binary star system in the northern constellation of Boötes . The primary is an F-type subgiant with a stellar classification of F4IV, while its companion is a G-type subgiant with a stellar classification of G1IV.[4]
References [ edit ]
^ a b c d e van Leeuwen, F. (November 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 Rakos, K. D.; et al. (February 1982), "Photometric and astrometric observations of close visual binaries", Astronomy and Astrophysics Supplement Series , 47 : 221–235, Bibcode :1982A&AS...47..221R . ^ "Sixth Catalog of Orbits of Visual Binary Stars" . United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 14 July 2017 .^ a b Edwards, T. W. (1976). "MK classification for visual binary components". The Astronomical Journal . 81 : 245. Bibcode :1976AJ.....81..245E . doi :10.1086/111879 . ^ Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication , Carnegie Institute of Washington D.C., Bibcode :1953GCRV..C......0W . ^ a b c Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics , 501 (3): 941–947, arXiv :0811.3982 Bibcode :2009A&A...501..941H , doi :10.1051/0004-6361/200811191 , S2CID 118577511 . ^ Heintz, W. D. (July 1998), "Observations of Double Stars. XVIII.", The Astrophysical Journal Supplement Series , 117 (2): 587–598, Bibcode :1998ApJS..117..587H , doi :10.1086/313127 ^ a b Tokovinin, Andrei (April 2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal , 147 (4): 14, arXiv :1401.6827 Bibcode :2014AJ....147...87T , doi :10.1088/0004-6256/147/4/87 , S2CID 56066740 , 87. ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society , 427 (1): 343–57, arXiv :1208.2037 Bibcode :2012MNRAS.427..343M , doi :10.1111/j.1365-2966.2012.21873.x , S2CID 118665352 .
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