Mu Tauri

Mu Tauri
Location of μ Tauri (circled)
Observation data
Epoch J2000      Equinox ICRS
Constellation Taurus
Right ascension 04h 15m 32.05806s
Declination +08° 53′ 32.4783″
Apparent magnitude (V) 4.27
Characteristics
Evolutionary stage main sequence
Spectral type B3IV
U−B color index −0.51
B−V color index −0.05
Astrometry
Radial velocity (Rv)+16.3±0.6 km/s
Proper motion (μ) RA: +19.770 mas/yr
Dec.: −21.918 mas/yr
Parallax (π)6.4463±0.2095 mas
Distance510 ± 20 ly
(155 ± 5 pc)
Absolute magnitude (MV)−1.45
Details
Mass6.7 M☉
Radius6.9 R☉
Luminosity325 L☉
Surface gravity (log g)3.75 cgs
Temperature16,980 K
Metallicity [Fe/H]−0.16 dex
Rotational velocity (v sin i)89 km/s
Age252 Myr
Other designations
μ Tau, 49 Tauri, BD+08°657, FK5 1118, GC 5134, HD 26912, HIP 116820, HR 1320, SAO 111696, GSC 00667-00839
Database references
SIMBADdata

μ Tauri, Latinized as Mu Tauri, is a single star in the equatorial constellation of Taurus. It has a blue-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.27. The star is located approximately 510 light years distant from the Sun based on parallax, and is drifting further away with a radial velocity of +16 km/s.

This object has a stellar classification of B3IV, matching a B-type subgiant star. In the past this star was thought to have a variable radial velocity, but is now considered constant. It is 252 million years old and is spinning with a projected rotational velocity of 89 km/s. The star has 6.7 times the mass of the Sun and is radiating 325 times the Sun's luminosity from its photosphere at an effective temperature of 16,980 K. It is emitting an infrared excess at a wavelength of 18 μm, making it a candidate host of a faint warm debris disk.

References

  1. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. 1 2 3 4 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
  3. 1 2 Lesh, Janet Rountree (December 1968), "The Kinematics of the Gould Belt: an Expanding Group?", Astrophysical Journal Supplement, 17: 371, Bibcode:1968ApJS...17..371L, doi:10.1086/190179
  4. 1 2 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
  5. 1 2 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.
  6. 1 2 Tetzlaff, N.; et al. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873. Vizier catalog entry
  7. 1 2 3 McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433.
  8. 1 2 3 Soubiran, Caroline; et al. (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics. 591: A118. arXiv:1605.07384. Bibcode:2016A&A...591A.118S. doi:10.1051/0004-6361/201628497. S2CID 119258214.
  9. 1 2 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.
  10. 1 2 Gontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars", Astronomy Letters, 38 (11): 694–706, arXiv:1606.09028, Bibcode:2012AstL...38..694G, doi:10.1134/S1063773712110035, S2CID 119108982
  11. ↑ "mu Tau". SIMBAD. Centre de données astronomiques de Strasbourg.
  12. ↑ 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.
  13. ↑ Percy, J. R.; Lane, M. C. (May 1977). "Search for Beta Cephei stars. I - Photometric and spectroscopic studies of northern B-type stars". Astronomical Journal. 82: 353–359. Bibcode:1977AJ.....82..353P. doi:10.1086/112057.
  14. ↑ Ishihara, Daisuke; et al. (May 2017). "Faint warm debris disks around nearby bright stars explored by AKARI and IRSF". Astronomy & Astrophysics. 601: 18. arXiv:1608.04480. Bibcode:2017A&A...601A..72I. doi:10.1051/0004-6361/201526215. S2CID 55234482. A72.