Wikipedia

6 Canis Minoris

6 Canis Minoris is a star in the equatorial constellation of Canis Minor, located around 570 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of +4.55.[1] This object is moving closer to the Earth with a heliocentric radial velocity of −16.3 km/s.[4] Kinematically, it is a member of an outlying group belonging to the Ursa Major flow of the Sirius supercluster.[11]

6 Canis Minoris
Location of 6 Canis Minoris (circled in red)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Canis Minor[1]
Right ascension 07h 29m 47.78172s[2]
Declination +12° 00′ 23.6347″[2]
Apparent magnitude (V) +4.55[1]
Characteristics
Evolutionary stage giant
Spectral type K1 III[3]
B−V color index 1.276±0.001[1]
Astrometry
Radial velocity (Rv)−16.31±0.13[4] km/s
Proper motion (μ) RA: −0.57[2] mas/yr
Dec.: −18.85[2] mas/yr
Parallax (π)5.70±0.21 mas[2]
Distance570 ± 20 ly
(175 ± 6 pc)
Absolute magnitude (MV)−1.67[1]
Details
Mass4.0[5] M☉
Radius44[6] R☉
Luminosity794[7] L☉
Surface gravity (log g)1.45[8] cgs
Temperature4,336[8] K
Metallicity [Fe/H]−0.12[7] dex
Rotational velocity (v sin i)1.7[9] km/s
Age179[8] Myr
Other designations
6 CMi, BD+12°1567, FK5 1193, GC 10024, HD 59294, HIP 36425, HR 2864, SAO 96952[10]
Database references
SIMBADdata

This is an evolved giant star with a stellar classification of K1 III.[3] It has a mild barium anomaly,[12] which may indicate this is a binary star system with a white dwarf companion.[13] The interferometry-measured angular diameter of the visible component is about 2.31±0.03 mas,[14] which, at its estimated distance, equates to a physical radius of about 44 times the radius of the Sun.[6] This star has about four times the mass of the Sun[5] and is radiating 794 times the Sun's luminosity[7] from its enlarged photosphere at an effective temperature of 4,336 K.[6]

References

edit
  1. 1 2 3 4 5 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 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.
  3. 1 2 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.
  4. 1 2 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.
  5. 1 2 Gondoin, P. (December 1999), "Evolution of X-ray activity and rotation on G-K giants", Astronomy and Astrophysics, 352: 217–227, Bibcode:1999A&A...352..217G.
  6. 1 2 3 Stassun, Keivan G.; et al. (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.
  7. 1 2 3 Lehtinen, Jyri J.; Spada, Federico; Käpylä, Maarit J.; Olspert, Nigul; Käpylä, Petri J. (2020). "Common dynamo scaling in slowly rotating young and evolved stars". Nature Astronomy. 4 (7): 658. arXiv:2003.08997. Bibcode:2020NatAs...4..658L. doi:10.1038/s41550-020-1039-x.
  8. 1 2 3 Kordopatis, G.; Schultheis, M.; McMillan, P. J.; Palicio, P. A.; De Laverny, P.; Recio-Blanco, A.; Creevey, O.; Álvarez, M. A.; Andrae, R.; Poggio, E.; Spitoni, E.; Contursi, G.; Zhao, H.; Oreshina-Slezak, I.; Ordenovic, C.; Bijaoui, A. (2023). "Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters of Gaia DR3". Astronomy and Astrophysics. 669: A104. arXiv:2206.07937. Bibcode:2023A&A...669A.104K. doi:10.1051/0004-6361/202244283.
  9. ↑ De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239–243, arXiv:astro-ph/0010273, Bibcode:2000A&A...363..239D.
  10. ↑ "6 CMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-04-02.
  11. ↑ Chupina, N. V.; et al. (June 2006), "Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars", Astronomy and Astrophysics, 451 (3): 909–916, Bibcode:2006A&A...451..909C, doi:10.1051/0004-6361:20054009.
  12. ↑ Escorza, A.; et al. (December 2017), "Hertzsprung-Russell diagram and mass distribution of barium stars", Astronomy & Astrophysics, 608: 13, arXiv:1710.02029, Bibcode:2017A&A...608A.100E, doi:10.1051/0004-6361/201731832, S2CID 119428276, A100.
  13. ↑ 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.
  14. ↑ Richichi, A.; et al. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039
Retrieved from "https://en.wikipedia.org/w/index.php?title=6_Canis_Minoris&oldid=1345148918"