Nu Tauri

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]

Nu Tauri
Location of ν Tauri (circled)
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[1] mas
Distance116.9 ± 0.8 ly
(35.9 ± 0.2 pc)
Absolute magnitude (MV)1.14[2]
Details
Mass2.25±0.01[3] M☉
Radius2.87+0.16
−0.31[7] R☉
Luminosity28.1±0.4[7] L☉
Surface gravity (log g)4.02[8] cgs
Temperature7,836+464
−203[7] K
Metallicity [Fe/H]−0.19±0.08[9] dex
Rotational velocity (v sin i)83[3] km/s
Age206[8] Myr
Other designations
ν Ser, 38 Tauri, BD+05°581, FK5 151, GC 4862, HD 25490, HIP 18907, HR 1251, SAO 111579, WDS J04032+0559A, GSC 00079-01585[10]
Database references
SIMBADdata

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
  1. Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 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. Vizier catalog entry
  3. 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. Vizier catalog entry
  4. 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: 161. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637.
  5. Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42: 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry
  6. Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336.
  7. 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.
  8. 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. Vizier catalog entry
  9. 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.
  10. "nu Tau". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-10-04.
  11. 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.
  12. 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. A35.
  13. 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
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