Astronomy:HD 137058
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Lupus |
| Right ascension | 15h 25m 20.20923s[1] |
| Declination | −38° 44′ 00.8803″[1] |
| Apparent magnitude (V) | 4.60[2] |
| Characteristics | |
| Spectral type | A0 V[3] |
| B−V color index | 0.000±0.015[2] |
| Astrometry | |
| Radial velocity (Rv) | −3.0±2.8[4] km/s |
| Proper motion (μ) | RA: −41.573[1] mas/yr Dec.: −24.603[1] mas/yr |
| Parallax (π) | 13.6178 ± 0.4759[1] mas |
| Distance | 240 ± 8 ly (73 ± 3 pc) |
| Absolute magnitude (MV) | −0.76[2] |
| Details | |
| Radius | 3.0[5] R☉ |
| Luminosity | 155.71[6] L☉ |
| Temperature | 8,178[6] K |
| Rotational velocity (v sin i) | 300.0[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 137058 is a star in the southern constellation of Lupus. Eggleton and Tokovinin (2008) list it as a single star,[9] although Nitschelm and David (2011) noted it may be a double-lined spectroscopic binary.[10] Its apparent visual magnitude is 4.60,[2] which is bright enough to be visible to the naked eye. Based upon an annual parallax shift of 13.6 mas,[1] it is located 240 light years away.
The stellar classification of the primary component is A0 V,[3] matching an A-type main-sequence star. It is spinning rapidly with a projected rotational velocity of 300 km/s, giving it an oblate shape with an equatorial radius 22% larger than the polar radius.[7] The star is radiating 156 times the Sun's luminosity from its photosphere at an effective temperature of 8,178 K.[6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.
- ↑ 2.0 2.1 2.2 2.3 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode: 1978mcts.book.....H.
- ↑ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics 546: 14, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics 367 (2): 521–524, doi:10.1051/0004-6361:20000451, Bibcode: 2001A&A...367..521P.
- ↑ 6.0 6.1 6.2 McDonald, I. et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–357, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode: 2012MNRAS.427..343M.
- ↑ 7.0 7.1 van Belle, Gerard T. (March 2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review 20 (1): 51, doi:10.1007/s00159-012-0051-2, Bibcode: 2012A&ARv..20...51V.
- ↑ "HD 137058". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+137058.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ Nitschelm, C.; David, M. (September 2011), "An Investigation on Close Binaries in the Sco-Cen Complex", in Schmidtobreick, Linda; Schreiber, Matthias R.; Tappert, Claus, Evolution of compact binaries. Proceedings of a workshop held at Hotel San Martín, Viña del Mar, Chile 6-11 May 2011, ASP Conference Proceedings, 447, San Francisco, CA: Astronomical Society of the Pacific, p. 75, Bibcode: 2011ASPC..447...75N.
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