HD 90853
HD 90853 is a single[9] star in the southern constellation Carina. It has the Bayer designation s Carinae, while HD 98053 is the identifier from the Henry Draper catalogue. This is a variable star with an apparent visual magnitude that ranges from 3.36 down to 3.51,[10] and thus is bright enough to be visible to the naked eye. It is located at a distance of approximately 1,340 light-years from the Sun based on parallax, and has an absolute magnitude of −4.44.[2] The star is drifting further away with a radial velocity of +9 km/s.[2]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 27m 52.72877s[1] |
| Declination | −58° 44′ 21.8507″[1] |
| Apparent magnitude (V) | 3.81[2] |
| Characteristics | |
| Spectral type | F2II[3] or F0Ib[4] |
| B−V color index | 0.317±0.019[2] |
| Astrometry | |
| Radial velocity (Rv) | +9.4±0.7[2] km/s |
| Proper motion (μ) | RA: −14.47[1] mas/yr Dec.: +2.36[1] mas/yr |
| Parallax (π) | 2.43 ± 0.12 mas[1] |
| Distance | 1,340 ± 70 ly (410 ± 20 pc) |
| Absolute magnitude (MV) | −4.44[2] |
| Details | |
| Mass | 7.00±0.55[5] M☉ |
| Radius | 45.05+3.74 −4.03[6] R☉ |
| Luminosity | 3,466±392[6] L☉ |
| Surface gravity (log g) | 1.50[7] cgs |
| Temperature | 6,598+317 −258[6] K |
| Metallicity [Fe/H] | −0.37[7][2] dex |
| Rotational velocity (v sin i) | 22.0[7] km/s |
| Age | 100[7] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an aging bright giant or supergiant star that has been assigned stellar classifications of F2II[3] and F0Ib,[4] respectively. It has seven[5] times the mass of the Sun and has expanded to 45[6] times the Sun's radius. It is spinning with a projected rotational velocity of 22 km/s.[7] The star is radiating 3,466[6] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 6,598 K.[6]
References Edit
- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- ^ a b c d e f g Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- ^ a b Malaroda, S. (August 1975). "Study of the F-type stars. I. MK spectral types". Astronomical Journal. 80: 637–641. Bibcode:1975AJ.....80..637M. doi:10.1086/111786.
- ^ a b van der Wal, S. E.; van Genderen, A. M. (April 1988). "VBLUW-photometry of the two FO Ib supergiants HD 80404 and HD 90853 and the K5 Ib supergiant HD 85891 with its associated cluster". Astronomy and Astrophysics. 195: 172–178. Bibcode:1988A&A...195..172V.
- ^ a b Hohle, M. M.; et al. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349–360. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. S2CID 111387483.
- ^ a b c d e f 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 e Mallik, Sushma V.; et al. (October 2003). "Lithium and rotation in F and G dwarfs and subgiants". Astronomy and Astrophysics. 409: 251–261. Bibcode:2003A&A...409..251M. doi:10.1051/0004-6361:20031084.
- ^ "HD 90853". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-26.
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
- ^ Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.