ν Tauri, Latinized as Nu Tauri, is a single[11] star in the zodiac constellation of Taurus. It is a white-hued star and is visible to the naked eye with an apparent visual magnitude of +3.91.[2] This object is located 117 light years from the Sun based on parallax,[1] but is drifting closer with a radial velocity of −6 km/s.[6] It is predicted to come to within roughly 18.4 ly of the Sun in around five million years.[12]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 03m 09.37966s[1] |
| Declination | +05° 59′ 21.4792″[1] |
| Apparent magnitude (V) | 3.91[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A0.5Va[4] |
| U−B color index | +0.06[5] |
| B−V color index | +0.03[5] |
| Astrometry | |
| Radial velocity (Rv) | −5.7±0.9[6] km/s |
| Proper motion (μ) | RA: +4.72[1] mas/yr Dec.: −3.78[1] mas/yr |
| Parallax (π) | 27.89 ± 0.19 mas[1] |
| Distance | 116.9 ± 0.8 ly (35.9 ± 0.2 pc) |
| Absolute magnitude (MV) | 1.14[2] |
| Details | |
| Mass | 2.25±0.01[3] M☉ |
| Radius | 2.87+0.16 −0.31[7] R☉ |
| Luminosity | 28.1±0.4[7] L☉ |
| Surface gravity (log g) | 4.02[8] cgs |
| Temperature | 7,836+464 −203[7] K |
| Metallicity [Fe/H] | −0.19±0.08[9] dex |
| Rotational velocity (v sin i) | 83[3] km/s |
| Age | 206[8] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This object is an A-type main-sequence star with a stellar classification of A0.5Va.[4] It is 206[8] million years old and is rotating with a projected rotational velocity of 83 km/s.[3] The star has 2.25[3] times the mass of the Sun and 2.87[7] times the Sun's radius. It is radiating 28 times the luminosity of the Sun from its photosphere at an effective temperature of 7,836 K.[7]
Nu Tauri has a magnitude 9.21 visual companion at an angular separation 15.9″.[13]
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 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 c d e Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. S2CID 55586789. Vizier catalog entry
- ^ a b Gray, R. O.; et al. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. S2CID 119476992.
- ^ a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42 (2): 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry
- ^ a b Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336.
- ^ a b c d e 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 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. Vizier catalog entry
- ^ Gáspár, András; et al. (2016). "The Correlation between Metallicity and Debris Disk Mass". The Astrophysical Journal. 826 (2): 171. arXiv:1604.07403. Bibcode:2016ApJ...826..171G. doi:10.3847/0004-637x/826/2/171. S2CID 119241004.
- ^ "nu Tau". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-04.
- ^ 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.
- ^ Bailer-Jones, C. A. L. (March 2015). "Close encounters of the stellar kind". Astronomy & Astrophysics. 575: 13. arXiv:1412.3648. Bibcode:2015A&A...575A..35B. doi:10.1051/0004-6361/201425221. S2CID 59039482. A35.
- ^ 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