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Nu Tauri

From Wikipedia, the free encyclopedia
Star in the constellation Taurus
Nu Tauri
Location of ν Tauri (circled)
Observation data
Epoch J2000      Equinox J2000
ConstellationTaurus
Right ascension04h 03m 09.37966s[1]
Declination+05° 59′ 21.4792″[1]
Apparent magnitude (V)3.91[2]
Characteristics
Evolutionary stagemain sequence[3]
Spectral typeA0.5Va[4]
U−Bcolor index+0.06[5]
B−Vcolor 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]
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

ν Tauri,Latinized asNu Tauri, is a single[11]star in thezodiacconstellation ofTaurus. It is a white-hued star and is visible to the naked eye with anapparent visual magnitude of +3.91.[2] This object is located 117 light years from the Sun based onparallax,[1] but is drifting closer with aradial 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]

This object is anA-type main-sequence star with astellar classification of A0.5Va.[4] It is 206[8] million years old and is rotating with aprojected rotational velocity of 83 km/s.[3] The star has 2.25[3] times themass of the Sun and 2.87[7] times theSun's radius. It is radiating 28 times theluminosity of the Sun from itsphotosphere at aneffective temperature of 7,836 K.[7]

Nu Tauri has a magnitude 9.21visual companion at anangular separation15.9.[13]

References

[edit]
  1. ^abcdefVan 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
  2. ^abcAnderson, 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
  3. ^abcdeZorec, 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
  4. ^abGray, 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.
  5. ^abMallama, 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
  6. ^abWilson, 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.
  7. ^abcdeBrown, 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 atVizieR.
  8. ^abcDavid, 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
  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.S2CID 119241004.
  10. ^"nu Tau".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2019-10-04.
  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.S2CID 14878976.
  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.S2CID 59039482. 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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