Astronomy:Psi Velorum
Psi Velorum, Latinized from ψ Velorum, is a binary star system in the southern constellation of Vela. Based upon an annual parallax shift of 53.15 mas as seen from Earth, it is located 61.4 light years from the Sun. It is visible to the naked eye with a combined apparent visual magnitude of +3.58.[2] The motion of this system through space makes it a candidate member of the Castor stellar kinematic group.[11]
The two components of this system orbit their common barycenter with a period of 33.95 years and an eccentricity of 0.433. The semimajor axis of their orbit has an angular size of 0.862 arc seconds.[8] Psi Velorum A and Psi Velorum B have apparent magnitudes of +3.91 and +5.12[3] and spectral types F0 IV and F3 IV, suggesting they are F-type subgiants.[5] Analysis of the stars' properties suggest that they are main sequence stars rather than subgiants,[4] and spectral types of F3V + F have also been published.[9] The secondary has been reported to be variable between magnitude 4.5 and 5.1.[12]
Notes
- ↑ 1.0 1.1 Calculated, using the Stefan-Boltzmann law and the stars' effective temperature and luminosity, with respect to the solar nominal effective temperature of 5,772 K:
References
- ↑ 1.0 1.1 1.2 1.3 1.4 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.
- ↑ 2.0 2.1 2.2 2.3 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data (SIMBAD), Bibcode: 1986EgUBV........0M.
- ↑ 3.0 3.1 Malkov, O. Yu. et al. (2012), "Dynamical Masses of a Selected Sample of Orbital Binaries", Astronomy & Astrophysics 546: 5, doi:10.1051/0004-6361/201219774, A69, Bibcode: 2012A&A...546A..69M.
- ↑ 4.0 4.1 Psi Velorum, http://stars.astro.illinois.edu/sow/psivel.html, retrieved 2025-01-17
- ↑ 5.0 5.1 5.2 5.3 Heiter, U. et al. (2015), "Gaia FGK benchmark stars: Effective temperatures and surface gravities", Astronomy & Astrophysics 582: A49, doi:10.1051/0004-6361/201526319, Bibcode: 2015A&A...582A..49H.
- ↑ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics 546: 14, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ Just, A.; Jahrei, H. (October 2008), "The main sequence from F to K stars of the solar neighbourhood in SDSS colours", Astronomische Nachrichten 329 (8): 790, doi:10.1002/asna.200811030, Bibcode: 2008AN....329..790J.
- ↑ 8.0 8.1 Hartkopf, W. I. et al. (2006), Sixth Catalog of Orbits of Visual Binary Stars, http://ad.usno.navy.mil/wds/orb6/orb6orbits.html#09307-4028, retrieved 2017-04-03
- ↑ 9.0 9.1 Meunier, N.; Lagrange, A.-M. (2022-03-01), "A new estimation of astrometric exoplanet detection limits in the habitable zone around nearby stars" (in en), Astronomy & Astrophysics 659: A104, doi:10.1051/0004-6361/202142702, ISSN 0004-6361, Bibcode: 2022A&A...659A.104M
- ↑ "* psi Vel". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+psi+Vel.
- ↑ Nakajima, Tadashi et al. (September 2010), "Potential Members of Stellar Kinematical Groups within 20 pc of the Sun", The Astronomical Journal 140 (3): 713–722, doi:10.1088/0004-6256/140/3/713, Bibcode: 2010AJ....140..713N.
- ↑ Samus, N. N. et al. (2009), "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)", VizieR On-line Data Catalog: B/GCVS 1, Bibcode: 2009yCat....102025S.
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