Astronomy:6 Canis Minoris

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Short description: Star in the constellation Canis Minor
6 Canis Minoris
Location of 6 Canis Minoris (circled in red)
Observation data
Epoch J2000.0   Equinox (celestial coordinates)
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[2] mas
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

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]

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

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A  XHIP record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V. 
  3. ↑ 3.0 3.1 Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series 71: 245, doi:10.1086/191373, Bibcode: 1989ApJS...71..245K. 
  4. ↑ 4.0 4.1 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  5. ↑ 5.0 5.1 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. ↑ 6.0 6.1 6.2 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  7. ↑ 7.0 7.1 7.2 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. doi:10.1038/s41550-020-1039-x. Bibcode: 2020NatAs...4..658L. 
  8. ↑ 8.0 8.1 8.2 Kordopatis, G.; Schultheis, M.; McMillan, P. J.; Palicio, P. A.; De Laverny, P.; Recio-Blanco, A.; Creevey, O.; Álvarez, M. A. et al. (2023). "Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters of Gaia DR3". Astronomy and Astrophysics 669: A104. doi:10.1051/0004-6361/202244283. Bibcode: 2023A&A...669A.104K. 
  9. ↑ De Medeiros, J. R. et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics 363: 239–243, Bibcode: 2000A&A...363..239D. 
  10. ↑ "6 CMi". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=6+CMi. 
  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, doi:10.1051/0004-6361:20054009, Bibcode: 2006A&A...451..909C. 
  12. ↑ Escorza, A. et al. (December 2017), "Hertzsprung-Russell diagram and mass distribution of barium stars", Astronomy & Astrophysics 608: 13, doi:10.1051/0004-6361/201731832, A100, Bibcode: 2017A&A...608A.100E. 
  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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E. 
  14. ↑ Richichi, A. et al. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics 431 (2): 773–777, doi:10.1051/0004-6361:20042039, Bibcode: 2005A&A...431..773R 



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