HD 90853

Last updated
HD 90853
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Carina [1]
Right ascension 10h 27m 52.72877s [2]
Declination −58° 44′ 21.8507″ [2]
Apparent magnitude  (V)3.81 [1]
Characteristics
Spectral type F2II [3] or F0Ib [4]
B−V color index 0.317±0.019 [1]
Astrometry
Radial velocity (Rv)+9.4±0.7 [1] km/s
Proper motion (μ)RA: −14.47 [2] mas/yr
Dec.: +2.36 [2] mas/yr
Parallax (π)2.43±0.12  mas [2]
Distance 1,340 ± 70  ly
(410 ± 20  pc)
Absolute magnitude  (MV)−4.44 [1]
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] [1]   dex
Rotational velocity (v sin i)22.0 [7]  km/s
Age 100 [7]   Myr
Other designations
s Car, NSV 4869, AAVSO 1024-58C, CD−58°2227, FK5 393, GC 14388, HD 90853, HIP 51232, HR 4114, SAO 238085 [8]
Database references
SIMBAD data

HD 90853 is a single [9] star in the southern constellation Carina. It has the Bayer designation s Carinae, while HD 90853 is the identifier from the Henry Draper catalogue . This is a suspectedvariable star [10] with an apparent visual magnitude reported to vary between 3.79 and 3.83, [11] 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. [1] The star is drifting further away with a radial velocity of +9 km/s. [1]

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

  1. 1 2 3 4 5 6 7 8 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 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 .
  3. 1 2 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 .
  4. 1 2 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.
  5. 1 2 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.
  6. 1 2 3 4 5 6 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.
  7. 1 2 3 4 5 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 .
  8. ↑ "HD 90853". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-01-26.
  9. ↑ 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.
  10. ↑ 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.
  11. ↑ Stoy, R. H. (1959). "Some Bright Variable Stars". Monthly Notes of the Astronomical Society of South Africa. 18: 48. Bibcode:1959MNSSA..18...48S.
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