16 Lyncis
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lynx |
Right ascension | 06h 57m 37.10709s[1] |
Declination | +45° 05′ 38.7404″[1] |
Apparent magnitude (V) | 4.90[2] |
Characteristics | |
Spectral type | A0Vn[3] |
B−V color index | 0.03[2] |
Variable type | suspected[4] |
Astrometry | |
Radial velocity (Rv) | −11.90±1[5] km/s |
Proper motion ( | RA: −21.52±0.27[1] mas/yr Dec.: −3.12±0.17[1] mas/yr |
Parallax ( | 13.54 ± 0.23 mas[1] |
Distance | 241 ± 4 ly (74 ± 1 pc) |
Absolute magnitude (MV) | 0.56[6] |
Details[7] | |
Mass | 2.38 M☉ |
Luminosity | 56[6] L☉ |
Surface gravity (log g) | 4.02 cgs |
Temperature | 10,395±353 K |
Rotational velocity (v sin i) | 229 km/s |
Age | 181 Myr |
Other designations | |
Database references | |
SIMBAD | data |
16 Lyncis is a star in the constellation Lynx. It is positioned next to the western constellation border with Auriga, and is also known as Psi10 Aurigae, which is Latinized from
This object is a solitary[9] A-type main-sequence star with a stellar classification of A0Vn,[3] a star that is currently fusing its core hydrogen. The 'n' suffix indicates "nebulous" absorption lines due to rapid rotation. It is around 181 million years old with a projected rotational velocity of 229 km/s.[7] This spin rate is giving the star an oblate shape with an equatorial bulge that is an estimated 10% larger than the polar radius.[10] 16 Lyncis has 2.38[7] times the mass of the Sun and is radiating 56[6] times the Sun's luminosity from its photosphere at an effective temperature of 10,395 K.[7]
16 Lyncis is suspected of being slightly variable, but this has not been confirmed.[11] It was noted when 16 Lyncis was used as a comparison star for observing another variable, the peculiar HD 51418 (NY Aurigae).[4]
See also
[edit]References
[edit]- ^ a b c d e f 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.
- ^ a b c Hoffleit, D.; Warren, W. H. (1995). "Bright Star Catalogue". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050 (5th ed.). Bibcode:1995yCat.5050....0H.
- ^ a b Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". The Astrophysical Journal Supplement Series. 99: 135. Bibcode:1995ApJS...99..135A. doi:10.1086/192182.
- ^ a b Gulliver, A. F.; Winzer, J. E. (1973). "Spectrum and light variations of the peculiar a star HD 51418". The Astrophysical Journal. 183: 701. Bibcode:1973ApJ...183..701G. doi:10.1086/152260.
- ^ 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. S2CID 119231169.
- ^ a b c d 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 119257644.
- ^ a b c d David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
- ^ "psi10 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-07-01.
- ^ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
- ^ Belle, G. T. (2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20 (1): 51. arXiv:1204.2572. Bibcode:2012A&ARv..20...51V. doi:10.1007/s00159-012-0051-2. S2CID 119273474.
- ^ VSX (18 January 2010). "NSV 3293". AAVSO Website. American Association of Variable Star Observers. Retrieved 11 October 2014.