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Star in the constellation Carina
V520 Carinae is a single[ 9] star in the southern constellation of Carina . It has the Bayer designation w Carinae , while V520 Carinae is a variable star designation . The star has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude that fluctuates around +4.58.[ 3] light years from the Sun based on parallax , and it is drifting further away with a radial velocity of +9 km/s.[ 3] IC 2391 moving group of co-moving stars.[ 10]
This is an aging giant star with a stellar classification of K4III,[ 4] supergiant class of K3Ib.[ 11] slow irregular variable of type Lc and its brightness varies from magnitude +4.50 to +4.59 with no periodicity.[ 12] girth of the Sun ,[ 7] core then cooled and expanded. Comparison with theoretical evolutionary tracks suggests it is 33 million years old with 7.9 times the mass of the Sun ,[ 6] astrometric binary with a mass of 1.014 M ☉ .[ 13] [ 7] luminosity of the Sun from its enlarged photosphere at an effective temperature of 3,903 K.[ 7]
^ "Hipparcos Tools Interactive Data Access" . Hipparcos . ESA. Retrieved 8 December 2021 .^ a b c d e 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 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 . ^ Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports , 5.1, 61 (1): 80–88, Bibcode :2017ARep...61...80S , doi :10.1134/S1063772917010085 , S2CID 125853869 . ^ a b c Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society , 410 (1): 190–200, arXiv :1007.4883 Bibcode :2011MNRAS.410..190T , doi :10.1111/j.1365-2966.2010.17434.x S2CID 118629873 . ^ a b c d e f 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 .^ "V520 Car" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2020-02-19 .^ 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 . ^ Montes, D.; et al. (November 2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society 328 (1): 45–63, arXiv :astro-ph/0106537 Bibcode :2001MNRAS.328...45M , doi :10.1046/j.1365-8711.2001.04781.x S2CID 55727428 . ^ Humphreys, R. M. (June 1970), "The space distribution and kinematics of supergiants", Astronomical Journal , 75 : 602–623, Bibcode :1970AJ.....75..602H , doi :10.1086/110995 ^ "V520 Carinae" , Variable Star Index , retrieved 2020-02-20 ^ Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric (2019), "Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly", Astronomy and Astrophysics , 623 : A72, arXiv :1811.08902 Bibcode :2019A&A...623A..72K , doi :10.1051/0004-6361/201834371 , S2CID 119491061 .
