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.
| 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) | +16.5±3.0[4] km/s |
| Proper motion (μ) | RA: −130.55[1] mas/yr Dec.: +42.98[1] mas/yr |
| Parallax (π) | 3.4252 ± 0.1907 mas[1] |
| Distance | 950 ± 50 ly (290 ± 20 pc) |
| Absolute magnitude (MV) | −2.84[2] |
| Details | |
| primary | |
| Mass | 9.3[5] M☉ |
| Radius | 5.405[6] R☉ |
| Luminosity | 2,686[6] L☉ |
| Surface gravity (log g) | 3.779[6] cgs |
| Temperature | 17,887[6] K |
| Rotational velocity (v sin i) | 64±2[4] km/s |
| Age | 14.1[5] Myr |
| secondary | |
| Rotational velocity (v sin i) | 24±2[4] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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.[4] Line-profile variations have been detected which suggest that at least one component pulsates, as is common for stars of this spectral class.[10]
HD 83058 was proposed as a runaway star from a supernova explosion. However, the discovery that it is a binary makes this unlikely.[4]
References
edit- ^ 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.
- ^ 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.
- ^ Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Bibcode:1978mcts.book.....H.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ "HD 83058". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-07.
- ^ 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.
- ^ 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.
- ^ 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.