Astronomy:HD 75710
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Short description: Star in the constellation Vela
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Vela[1] |
| Right ascension | 08h 49m 47.63746s[2] |
| Declination | −45° 18′ 28.3346″[2] |
| Apparent magnitude (V) | 4.94[1] |
| Characteristics | |
| Spectral type | A2 III[3] |
| B−V color index | +0.043±0.003[1] |
| Astrometry | |
| Radial velocity (Rv) | +5.0±7.4[4] km/s |
| Proper motion (μ) | RA: −11.490[2] mas/yr Dec.: +13.450[2] mas/yr |
| Parallax (π) | 2.7107 ± 0.1660[2] mas |
| Distance | 1,200 ± 70 ly (370 ± 20 pc) |
| Absolute magnitude (MV) | −2.71[1] |
| Details | |
| Mass | 2.8[5] M☉ |
| Radius | 15[6] R☉ |
| Luminosity | 1,668[6] L☉ |
| Surface gravity (log g) | 3.38[5] cgs |
| Temperature | 9,456[6] K |
| Metallicity [Fe/H] | −1.03[5] dex |
| Rotational velocity (v sin i) | 110[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 75710 is a single[9] star in the constellation of Vela. It has an apparent visual magnitude of approximately 4.94,[1] which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 2.7 mas,[2] it is located about 1,200 light-years from the Sun.
The stellar classification of this star is A2 III,[3] suggesting it is in the giant star stage of its stellar evolution. It has a high rate of spin with a projected rotational velocity of 110 km/s, which is giving the star an oblate shape with an equatorial bulge that is 7% larger than the polar radius.[7] HD 75710 is radiating 1,668 times the Sun's luminosity from its photosphere at an effective temperature of 9,456 K.[6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 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.
- ↑ 3.0 3.1 Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode: 1978mcts.book.....H.
- ↑ 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, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D.
- ↑ 5.0 5.1 5.2 Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G. et al. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics 691: A98. doi:10.1051/0004-6361/202451427. Bibcode: 2024A&A...691A..98K.
- ↑ 6.0 6.1 6.2 6.3 Fetherolf, Tara; Pepper, Joshua; Simpson, Emilie; Kane, Stephen R.; Močnik, Teo; English, John Edward; Antoci, Victoria; Huber, Daniel et al. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission". The Astrophysical Journal Supplement Series 268 (1): 4. doi:10.3847/1538-4365/acdee5. Bibcode: 2023ApJS..268....4F.
- ↑ 7.0 7.1 Belle, G. T. (2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review 20: 51, doi:10.1007/s00159-012-0051-2, Bibcode: 2012A&ARv..20...51V.
- ↑ "HD 75710". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+75710.
- ↑ 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.
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