Solitary K-type star in the constellation Virgo
Kappa Virginis (κ Virginis , abbreviated Kappa Vir , κ Vir ), officially named Kang ,[ 8] star in the zodiac constellation of Virgo . It has an apparent visual magnitude of 4.18,[ 2] stellar parallax measurements, the distance to this star is about 255 light-years .
Nomenclature
κ Virginis (Latinised to Kappa Virginis ) is the star's Bayer designation .
In Chinese , 亢宿 Kàng Sù Neck asterism consisting of Kappa Virginis, Iota Virginis , Phi Virginis and Lambda Virginis .[ 9] 亢宿一 Káng Sù yī [ 10]
In 2016, the IAU organized a Working Group on Star Names (WGSN)[ 11] Kang for this star on 30 June and it is now so included in the List of IAU-approved Star Names.[ 8]
Properties
This is an orange-hued K-type giant star with a stellar classification of K2/3 III.[ 3] mass of the Sun , but at an estimated age of 9.7 billion years it has evolved and expanded to over 25 times the Sun's radius . As a consequence, it shines with around 229 times the solar luminosity . The effective temperature of the star's outer atmosphere is 4,235 K.[ 6]
References
^ 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 Jennens, P. A.; Helfer, H. L. (September 1975), "A new photometric metal abundance and luminosity calibration for field G and K giants", Monthly Notices of the Royal Astronomical Society 172 (3): 667– 679, Bibcode :1975MNRAS.172..667J , doi :10.1093/mnras/172.3.667 ^ a b Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey , 5 , Bibcode :1999MSS...C05....0H . ^ a b Massarotti, Alessandro; et al. (January 2008), "Rotational and radial velocities for a sample of 761 HIPPARCOS giants and the role of binarity", The Astronomical Journal , 135 (1): 209– 231, Bibcode :2008AJ....135..209M , doi :10.1088/0004-6256/135/1/209 S2CID 121883397 . ^ 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 e f g h Maldonado, J.; et al. (June 2013), "The metallicity signature of evolved stars with planets", Astronomy & Astrophysics , 554 : 18, arXiv :1303.3418 Bibcode :2013A&A...554A..84M , doi :10.1051/0004-6361/201321082 , S2CID 119289111 , A84. ^ "kap Vir" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2016-09-08 .^ a b "Naming Stars" . IAU.org. Retrieved 16 December 2017 .^ (in Chinese) 中國星座神話 , written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7 .^ (in Chinese) 香港太空館 - 研究資源 - 亮星中英對照表 Archived 2008-10-25 at the Wayback Machine , Hong Kong Space Museum. Accessed on line November 23, 2010.^ "IAU Working Group on Star Names (WGSN)" . Retrieved 22 May 2016 .
