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HD 137058
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lupus[1] |
| Right ascension | 15h 25m 20.20923s[2] |
| Declination | −38° 44′ 00.8803″[2] |
| Apparent magnitude (V) | 4.60[1] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A0 V[4] |
| B−V color index | 0.000±0.015[1] |
| Astrometry | |
| Radial velocity (Rv) | −3.0±2.8[5] km/s |
| Proper motion (μ) | RA: −41.573[2] mas/yr Dec.: −24.603[2] mas/yr |
| Parallax (π) | 13.6178±0.4759 mas[2] |
| Distance | 240 ± 8 ly (73 ± 3 pc) |
| Absolute magnitude (MV) | −0.76[1] |
| Details | |
| Mass | 2.4[6] M☉ |
| Radius | 3.3[6] R☉ |
| Luminosity | 72[6] L☉ |
| Surface gravity (log g) | 3.78[6] cgs |
| Temperature | 9,283[6] K |
| Rotational velocity (v sin i) | 300.0[7] km/s |
| Age | 267[8] Myr |
| Other designations | |
| k Lup, CD−38°10289, HD 137058, HIP 75501, HR 5724, SAO 206616[9] | |
| 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,[10] although Nitschelm and David (2011) noted it may be a double-lined spectroscopic binary.[11] Its apparent visual magnitude is 4.60,[1] which is bright enough to be visible to the naked eye. Based upon an annual parallax shift of 13.6 mas,[2] it is located 240 light years away.
The stellar classification of the primary component is A0 V,[4] 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 72 times the Sun's luminosity from its photosphere at an effective temperature of 9,283 K.[6]
References
[edit]- ^ a b c d e 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. XHIP record for this object at VizieR.
- ^ a b c d e f 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.
- ^ Patten, B. M.; Willson, L. A. (1991). "An IRAS Survey of Main-Sequence B,A, and F Stars". The Astronomical Journal. 102: 323. Bibcode:1991AJ....102..323P. doi:10.1086/115879.
- ^ a b Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 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. arXiv:1208.3048. Bibcode:2012A&A...546A..61D. doi:10.1051/0004-6361/201219219. S2CID 59451347. A61.
- ^ a b c d e f Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
- ^ a b van Belle, Gerard T. (March 2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20 (1): 51. arXiv:1204.2572. Bibcode:2012A&ARv..20...51V. doi:10.1007/s00159-012-0051-2. S2CID 119273474.
- ^ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031.
- ^ "HD 137058". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-29.
- ^ 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. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
- ^ Nitschelm, C.; David, M. (2011). "An Investigation on Close Binaries in the Sco-Cen Complex". Evolution of Compact Binaries. 447: 75. Bibcode:2011ASPC..447...75N.
