HD 83058

This article is about L Velorum. For l Velorum, see HD 79917.
HD 83058
Observation data
Epoch J2000      Equinox J2000
Constellation Vela[1]
Right ascension 09h 34m 08.793s[2]
Declination −51° 15′ 18.95″[2]
Apparent magnitude (V) 5.00[3]
Characteristics
Evolutionary stage subgiant
Spectral type B2 IV[4]
U−B color index −0.97[3]
B−V color index −0.19[3]
Astrometry
Radial velocity (Rv)+16.5±3.0[5] km/s
Proper motion (μ) RA: −130.55[2] mas/yr
Dec.: +42.98[2] mas/yr
Parallax (π)3.4252±0.1907 mas[2]
Distance950 ± 50 ly
(290 ± 20 pc)
Absolute magnitude (MV)−2.84[3]
Details
primary
Mass9.3[6] M☉
Radius5.405[7] R☉
Luminosity2,686[7] L☉
Surface gravity (log g)3.779[7] cgs
Temperature17,887[7] K
Rotational velocity (v sin i)64±2[5] km/s
Age14.1[6] Myr
secondary
Rotational velocity (v sin i)24±2[5] km/s
Other designations
L Vel, CD−50°4270, FK5 2764, HD 83058, HIP 46950, HR 3819, SAO 237107[8]
Database references
SIMBADdata

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.

HD 83058 has generally been considered to be a single star,[9] but high-resolution spectra show it to be a double-lined spectroscopic binary.[10] The two components have approximately the same spectral type.[5] 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 is a binary makes this unlikely.[5]

References

  1. ^ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  2. ^ a b c d e 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. ^ a b c d 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.
  4. ^ Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Bibcode:1978mcts.book.....H.
  5. ^ a b c d e 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. S2CID 122201360.
  6. ^ a b 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.
  7. ^ a b c d 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.
  8. ^ "HD 83058". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-07.
  9. ^ 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.
  10. ^ 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.
  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. hdl:2066/36162.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.