HD 137058

Last updated
HD 137058
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

  1. 1 2 3 4 5 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.
  2. 1 2 3 4 5 6 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.
  3. ↑ 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.
  4. 1 2 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.
  5. ↑ 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.
  6. 1 2 3 4 5 6 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 .
  7. 1 2 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.
  8. ↑ 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.
  9. ↑ "HD 137058". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2018-07-29.
  10. ↑ 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.
  11. ↑ 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.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.