Astronomy:HD 83058
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Short description: Binary star system in the constellation Vela
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[1] mas |
| 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 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,[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 was a binary make this unlikely.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 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. doi:10.1007/s10509-020-03827-0. Bibcode: 2020Ap&SS.365..112M.
- ↑ Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Bibcode: 1978mcts.book.....H.
- ↑ 4.0 4.1 4.2 4.3 4.4 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. doi:10.1088/0004-637X/721/1/469. Bibcode: 2010ApJ...721..469J.
- ↑ 5.0 5.1 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. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T.
- ↑ 6.0 6.1 6.2 6.3 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. doi:10.1093/mnras/stx1433. Bibcode: 2017MNRAS.471..770M.
- ↑ "HD 83058". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+83058.
- ↑ 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. doi:10.1111/j.1365-2966.2008.13596.x. Bibcode: 2008MNRAS.389..869E.
- ↑ 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. doi:10.1111/j.1365-2966.2012.21317.x. Bibcode: 2012MNRAS.424.1925C.
- ↑ 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. doi:10.1051/0004-6361:20054730. Bibcode: 2006A&A...452..945T.
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