[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/37-comae-berenices-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki40\/37-comae-berenices-wikipedia\/","headline":"37 Comae Berenices – Wikipedia","name":"37 Comae Berenices – Wikipedia","description":"From Wikipedia, the free encyclopedia Triple-star system in the constellation Coma Berenices 37 Comae Berenices is a variable star system","datePublished":"2014-09-16","dateModified":"2014-09-16","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki40\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","url":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","height":"1","width":"1"},"url":"https:\/\/wiki.edu.vn\/en\/wiki40\/37-comae-berenices-wikipedia\/","about":["Wiki"],"wordCount":3188,"articleBody":"From Wikipedia, the free encyclopediaTriple-star system in the constellation Coma Berenices37 Comae Berenices is a variable star system located around 690[2]\u00a0light years away from the Sun in the northern constellation of Coma Berenices.[9] It has the variable star designation LU Comae Berenices. 37 Comae Berenices was a later Flamsteed designation of 13 Canum Venaticorum.[10] This object is visible to the naked eye as a faint, yellow-hued star with a baseline apparent visual magnitude of 4.88.[3] It is drifting closer to the Earth with a heliocentric radial velocity of \u221214\u00a0km\/s.[8]Tokovinin (2008) catalogued this as a wide triple star system.[4] The primary component is an aging giant star, currently in the Hertzsprung gap,[4] with a stellar classification of G9 III CH-2 CN-1.[5] It is a weak G-band star,[4] a luminous giant star with a carbon abundance about a factor of 5 lower than is typical for such stars.[11] This is a variable star most likely of the RS CVn type with an amplitude of 0.15 in magnitude,[7] and it displays magnetic activity.[4] It has 5.25 times the mass of the Sun and, having exhausted the supply of hydrogen at its core, has expanded to 38 times the Sun’s radius.[3]References[edit]^ Henry, Gregory W.; Fekel, Francis C.; Henry, Stephen M.; Hall, Douglas S. (September 2000). “Photometric Variability in a Sample of 187 G and K Giants”. The Astrophysical Journal Supplement Series. 130 (1): 201\u2013225. Bibcode:2000ApJS..130..201H. doi:10.1086\/317346. S2CID\u00a017160805. Retrieved 17 June 2022.^ a b c d e f Brown, A. G. A.;  et\u00a0al. (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 Auri\u00e8re, M.;  et\u00a0al. (2015). “The magnetic fields at the surface of active single G-K giants”. Astronomy & Astrophysics. 574: A90. arXiv:1411.6230. Bibcode:2015A&A…574A..90A. doi:10.1051\/0004-6361\/201424579. S2CID\u00a0118504829.^ a b c d e f g h i Tsvetkova, S.;  et\u00a0al. (March 2017). “Magnetic field structure in single late-type giants: The weak G-band giant 37 Comae from 2008 to 2011”. Astronomy & Astrophysics. 599: 13. arXiv:1612.02669. Bibcode:2017A&A…599A..72T. doi:10.1051\/0004-6361\/201527034. S2CID\u00a0118944156. A72.^ a b Keenan, Philip C.; McNeil, Raymond C. (1989), “The Perkins catalog of revised MK types for the cooler stars”, Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS…71..245K, doi:10.1086\/191373.^ a b 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\u00a0119257644.^ a b Samus, N. N.;  et\u00a0al. (2017), “General Catalogue of Variable Stars”, Astronomy Reports, GCVS 5.1, 61 (1): 80\u201388, Bibcode:2017ARep…61…80S, doi:10.1134\/S1063772917010085, S2CID\u00a0125853869.^ a b Famaey, B.;  et\u00a0al. (2005). “Local kinematics of K and M giants from CORAVEL\/Hipparcos\/Tycho-2 data. Revisiting the concept of superclusters”. Astronomy and Astrophysics. 430: 165\u2013186. arXiv:astro-ph\/0409579. Bibcode:2005A&A…430..165F. doi:10.1051\/0004-6361:20041272. S2CID\u00a017804304.^ a b “37 Com”. SIMBAD. Centre de donn\u00e9es astronomiques de Strasbourg. Retrieved 2019-07-16.^ Wagman, M. (August 1987). “Flamsteed’s Missing Stars”. Journal for the History of Astronomy. 18 (3): 214. Bibcode:1987JHA….18..209W. doi:10.1177\/002182868701800305. S2CID\u00a0118445625.^ Lambert, D. L.; Ries, L. M. (Aug 15, 1981). “Carbon, nitrogen, and oxygen abundances in G and K giants”. Astrophysical Journal. 248: 228\u2013248. Bibcode:1981ApJ…248..228L. doi:10.1086\/159147."},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/37-comae-berenices-wikipedia\/#breadcrumbitem","name":"37 Comae Berenices – Wikipedia"}}]}]