Tau3 Gruis
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Grus |
Right ascension | 22h 56m 47.80014s[1] |
Declination | −47° 58′ 09.1951″[1] |
Apparent magnitude (V) | 5.71[2] |
Characteristics | |
Spectral type | kA5hA7mF2[3] |
U−B color index | +0.17[2] |
B−V color index | +0.22[2] |
Astrometry | |
Proper motion (μ) | RA: −25.18[1] mas/yr Dec.: +2.07[1] mas/yr |
Parallax (π) | 13.40 ± 0.34[1] mas |
Distance | 243 ± 6 ly (75 ± 2 pc) |
Absolute magnitude (MV) | +1.36[4] |
Details | |
Luminosity | 24[4] L☉ |
Other designations | |
Database references | |
SIMBAD | data |
Tau3 Gruis is a solitary,[6] white-hued star in the southern constellation of Grus. Its apparent magnitude is 5.71,[2] which is bright enough to be faintly visible to the naked eye. Located around 243 light-years (75 pc) distant, it is a A-type chemically peculiar star of spectral type kA5hA7mF2.[3] This notation indicates the spectrum displays the calcium K-line of an A5 star, the hydrogen lines of an A7 star, and the metal lines of an F2 star.[7]
References
- 1 2 3 4 5 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.
- 1 2 3 4 Feinstein, A. (1974), "Photoelectric UBVRI observations of Am stars", Astronomical Journal, 79: 1290, Bibcode:1974AJ.....79.1290F, doi:10.1086/111675.
- 1 2 Abt, Helmut A.; Morrell, Nidia I. (1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement, 99: 135, Bibcode:1995ApJS...99..135A, doi:10.1086/192182
- 1 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.
- ↑ "tau03 Gru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-24.
- ↑ 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.
- ↑ Gray, Richard O.; Corbally, J. (2009), Stellar Spectral Classification, Princeton University Press, p. 178, ISBN 0691125112.
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