ν Persei, Latinized as Nu Persei, is a single[13] star and a suspected variable in the northern constellation of Perseus. It has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 3.80.[2] This object is located approximately 560 light-years from the Sun based on parallax[1] but is drifting closer with a radial velocity of −12 km/s.[5]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 03h 45m 11.63204s[1] |
| Declination | 42° 34′ 42.7829″[1] |
| Apparent magnitude (V) | 3.80[2] |
| Characteristics | |
| Spectral type | F5II[3] |
| U−B color index | +0.28[2] |
| B−V color index | +0.42[2] |
| Variable type | suspected[4] |
| Astrometry | |
| Radial velocity (Rv) | −12.10[5] km/s |
| Proper motion (μ) | RA: −14.45[1] mas/yr Dec.: +2.53[1] mas/yr |
| Parallax (π) | 5.86 ± 0.22 mas[1] |
| Distance | 560 ± 20 ly (171 ± 6 pc) |
| Absolute magnitude (MV) | −2.39[6] |
| Details | |
| Mass | 5.01[7] M☉ |
| Radius | 20.62+1.72 −1.76[8] R☉ |
| Luminosity | 603.6±41.2[8] L☉ |
| Surface gravity (log g) | 3.04[9] cgs |
| Temperature | 6,300+287 −158[8] K |
| Metallicity [Fe/H] | +0.41[9] dex |
| Rotational velocity (v sin i) | 48.9[10] km/s |
| Age | 109[11] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This object is a highly luminous bright giant star with a stellar classification of F5II.[3] It has five[7] times the mass of the Sun but has expanded to around 21[8] times the Sun's radius. The star has a relatively high rotation rate, spinning with a projected rotational velocity of 48.9 km/s.[10] It is radiating 604[8] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 6,300 K.[8]
Several visual companions beside the primary have been recorded. B, with magnitude 12.1 and separation 31.6", has its own companion, E, with magnitude 14.3 and separation 7.7". Additionally, C has magnitude 13.2 and separation 55.7", and D has magnitude 13.8 and separation 22.8".[14]
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. Vizier catalog entry
- ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- ^ a b Hoffleit, D.; Warren, W. H. (1995). "Bright Star Catalogue". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050 (5th Revised ed.). Bibcode:1995yCat.5050....0H.
- ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1: B/gcvs. Bibcode:2009yCat....102025S.
- ^ a b Gontcharov, G. A. (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.
- ^ 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. Vizier catalog entry
- ^ a b Hohle, M.M.; et al. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. S2CID 111387483. Vizier catalog entry
- ^ 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 Earle Luck, R. (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
- ^ a b De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Vizier catalog entry
- ^ Lyubimkov, Leonid S.; Lambert, David L.; Rostopchin, Sergey I.; Rachkovskaya, Tamara M.; Poklad, Dmitry B. (2010). "Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood". Monthly Notices of the Royal Astronomical Society. 402 (2): 1369–1379. arXiv:0911.1335. Bibcode:2010MNRAS.402.1369L. doi:10.1111/j.1365-2966.2009.15979.x. S2CID 119096173.
- ^ "nu. Per". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-02.
- ^ 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.
- ^ Mason, Brian D.; et al. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. Vizier catalog entry
External links
edit- Kaler, James B. (March 11, 2011). "Nu Persei". STARS. Retrieved 2019-10-03.