Star in the constellation of Hydra
HD 85951 (HR 3923 ), formally named Felis ,[ 13] is a solitary[ 14] orange hued star in the constellation Hydra . It has an apparent magnitude of 4.94,[ 2] making it faintly visible to the naked eye under ideal conditions. Based on parallax measurements, the object is about 570 light-years away from the Sun [ 1] and is receding with a heliocentric radial velocity of 50 km/s .[ 5]
Nomenclature
HD 85951 was the brightest star in the now-obsolete constellation of Felis .[ 15] In 2016, the IAU organized a Working Group on Star Names (WGSN)[ 16] to catalog and standardize proper names for stars. The WGSN approved the name Felis for this star on 1 June 2018 and it is now so included in the List of IAU-approved Star Names.[ 13]
Properties
This an evolved red giant with a stellar classification of K5 III.[ 4] It is currently on the asymptotic giant branch ,[ 3] generating energy via fusion of hydrogen and helium shells around an inert carbon core . At present Felis has 6.4 times the mass of the Sun [ 7] and due to its evolved status, has an enlarged radius of 56.7 R ☉ .[ 8] It radiates at a bolometric luminosity 721 times that of the Sun [ 9] from its photosphere at an effective temperature of 3,875 K .[ 10] Felis has an iron abundance 66% that of the Sun, making it metal deficient.
References
^ a b c d e Brown, A. G. A. ; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties" . Astronomy & Astrophysics . 649 : A1. arXiv :2012.01533 . Bibcode :2021A&A...649A...1G . doi :10.1051/0004-6361/202039657 . S2CID 227254300 . (Erratum: doi :10.1051/0004-6361/202039657e ) . Gaia EDR3 record for this source at VizieR .
^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues . 2237 . Bibcode :2002yCat.2237....0D .
^ a b Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun" . The Astronomical Journal . 104 : 275. Bibcode :1992AJ....104..275E . doi :10.1086/116239 . ISSN 0004-6256 .
^ a b Houk, N.; Smith-Moore, M. (1988). Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars. Volume 4, Declinations -26° to -12° . Vol. 4. Bibcode :1988mcts.book.....H .
^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters . 32 (11): 759–771. arXiv :1606.08053 . Bibcode :2006AstL...32..759G . doi :10.1134/S1063773706110065 . eISSN 1562-6873 . ISSN 1063-7737 . S2CID 119231169 .
^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331–346. arXiv :1108.4971 . Bibcode :2012AstL...38..331A . doi :10.1134/S1063773712050015 . eISSN 1562-6873 . ISSN 1063-7737 . S2CID 119257644 .
^ a b Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties" . Astronomy and Astrophysics . 674 : A1. arXiv :2208.00211 . Bibcode :2023A&A...674A...1G . doi :10.1051/0004-6361/202243940 . S2CID 244398875 .
Gaia DR3 record for this source at VizieR .
^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List" . The Astronomical Journal . 158 (4): 138. arXiv :1905.10694 . Bibcode :2019AJ....158..138S . doi :10.3847/1538-3881/ab3467 . ISSN 0004-6256 .
^ a b 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 .
^ a b c d Arentsen, Anke; Prugniel, Philippe; Gonneau, Anais; Lançon, Ariane; Trager, Scott; Peletier, Reynier; Lyubenova, Mariya; Chen, Yan-Ping; Falcón Barroso, Jesús; Sánchez Blázquez, Patricia; Vazdekis, Alejandro (July 2019). "Stellar atmospheric parameters for 754 spectra from the X-shooter Spectral Library" . Astronomy & Astrophysics . 627 : A138. arXiv :1907.06391 . Bibcode :2019A&A...627A.138A . doi :10.1051/0004-6361/201834273 . eISSN 1432-0746 . ISSN 0004-6361 .
^ Gould, Benjamin Apthorp (January 1879). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino . 1 . Bibcode :1879RNAO....1.....G .
^ "HD 85951" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 30 September 2012 .
^ a b "Naming Stars" . IAU.org. Retrieved 18 June 2018 .
^ Eggleton, P. P.; Tokovinin, A. A. (11 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 . eISSN 1365-2966 . ISSN 0035-8711 .
^ "Star Tales Felis" . Retrieved 16 January 2021 .
^ "IAU Working Group on Star Names (WGSN)" . Retrieved 22 May 2016 .