HD 83058

HD 83058 is a subgiant star in the constellation Vela and a spectroscopic binary. It is visible to the naked eye with an apparent visual magnitude of 5.0. Based upon an annual parallax shift of 3.4254 mas, it is located 950 light years from the Sun. The system is moving further away with a heliocentric radial velocity of +35 km/s.

This article is about L Velorum. For l Velorum, see HD 79917.
HD 83058
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 09h 34m 08.793s[1]
Declination −51° 15′ 18.95″[1]
Apparent magnitude (V) 5.00[2]
Characteristics
Evolutionary stage subgiant
Spectral type B2 IV[3]
U−B color index −0.97[2]
B−V color index −0.19[2]
Astrometry
Radial velocity (Rv)+35.10±10[4] km/s
Proper motion (μ) RA: −130.55[1] mas/yr
Dec.: +42.98[1] mas/yr
Parallax (π)3.4252 ± 0.1907[1] mas
Distance950 ± 50 ly
(290 ± 20 pc)
Absolute magnitude (MV)−2.84[2]
Details
Mass9.3[5] M☉
Radius5.405[6] R☉
Luminosity2,686[6] L☉
Surface gravity (log g)3.779[6] cgs
Temperature17,887[6] K
Age14.1[5] Myr
Other designations
L Vel, CD−50°4270, FK5 2764, HD 83058, HIP 46950, HR 3819, SAO 237107[7]
Database references
SIMBADdata

HD 83058 has generally been considered to be a single star,[8] but high-resolution spectra show it to be a double-lined spectroscopic binary.[9] The two components have approximately the same spectral type.[10] Line-profile variations have been detected which suggest that at least one component pulsates, as is common for stars of this spectral class.[11]

HD 83058 was proposed as a runaway star from a supernova explosion. However, the discovery that it was a binary make this unlikely.[10]

References
  1. 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.
  2. Melnik, A. M.; Dambis, A. K. (2020). "Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions". Astrophysics and Space Science. 365 (7): 112. arXiv:2006.14649. Bibcode:2020Ap&SS.365..112M. doi:10.1007/s10509-020-03827-0. S2CID 220128144.
  3. Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Bibcode:1978mcts.book.....H.
  4. Kharchenko, N. V.; Scholz, R. -D.; Piskunov, A. E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776. S2CID 119323941.
  5. Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 KPC from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.
  6. 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. S2CID 73594365.
  7. "HD 83058". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-07.
  8. 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.
  9. Chini, R.; Hoffmeister, V. H.; Nasseri, A.; Stahl, O.; Zinnecker, H. (2012). "A spectroscopic survey on the multiplicity of high-mass stars". Monthly Notices of the Royal Astronomical Society. 424 (3): 1925. arXiv:1205.5238. Bibcode:2012MNRAS.424.1925C. doi:10.1111/j.1365-2966.2012.21317.x. S2CID 119120749.
  10. Jilinski, E.; Ortega, V. G.; Drake, N. A.; de la Reza, R. (2010). "A Dynamical Study of Suspected Runaway Stars as Traces of Past Supernova Explosions in the Region of the Scorpius-Centaurus OB Association". The Astrophysical Journal. 721 (1): 469. Bibcode:2010ApJ...721..469J. doi:10.1088/0004-637X/721/1/469.
  11. Telting, J. H.; Schrijvers, C.; Ilyin, I. V.; Uytterhoeven, K.; De Ridder, J.; Aerts, C.; Henrichs, H. F. (2006). "A high-resolution spectroscopy survey of β Cephei pulsations in bright stars". Astronomy and Astrophysics. 452 (3): 945. Bibcode:2006A&A...452..945T. doi:10.1051/0004-6361:20054730.
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