59 Persei
59 Persei is a suspected astrometric binary[8] star system in the northern constellation of Perseus. It is visible to the naked eye as a dim, white-hued star with an apparent magnitude of 5.30.[2] The star is located around 256 light years distant from the Sun, based on parallax,[1] and is drifting further away with a radial velocity of +13 km/s.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 04h 42m 54.33987s[1] |
| Declination | +43° 21′ 54.4795″[1] |
| Apparent magnitude (V) | 5.30[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A1Vn[4] |
| B−V color index | 0.028±0.005[2] |
| Astrometry | |
| Radial velocity (Rv) | +13.2±3.1[2] km/s |
| Proper motion (μ) | RA: +30.826[1] mas/yr Dec.: −50.576[1] mas/yr |
| Parallax (π) | 12.7294 ± 0.1774 mas[1] |
| Distance | 256 ± 4 ly (79 ± 1 pc) |
| Absolute magnitude (MV) | 0.99[2] |
| Details | |
| Mass | 2.58[5] M☉ |
| Radius | 2.5[6] R☉ |
| Luminosity | 41.4+11.7 −9.2[3] L☉ |
| Surface gravity (log g) | 4.05±0.14[5] cgs |
| Temperature | 10,734±365[5] K |
| Rotational velocity (v sin i) | 212[3] km/s |
| Age | 198[5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an ordinary A-type main-sequence star with a stellar classification of A1Vn,[4] a star that is fusing its core hydrogen. The 'n' suffix indicates "nebulous" lines due to rapid spin; it has a projected rotational velocity of 212 km/s.[3] The star is around 198[5] million years old with 2.58[5] times the mass of the Sun and about 2.5[6] times the Sun's radius. It is radiating 41[3] times the luminosity of the Sun from its photosphere at an effective temperature of 10,734 K.[5]
References Edit
- ^ a b c d e f 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 e f 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 e Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
- ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
- ^ a b c d e f g 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.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics (Third ed.), 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
- ^ "59 Per". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-30.
- ^ 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.