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HD 93250

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HD 93250

HD 93250 is the bright star just above and left of the centre of this image of the Carina Nebula.
Credit: ESO
Observation data
Epoch J2000      Equinox J2000
Constellation Carina
Right ascension 10h 44m 45.026s[1]
Declination −59° 33′ 54.68″[1]
Apparent magnitude (V) 7.41[2]
Characteristics
Spectral type O4III(fc)[3]
U−B color index −0.85[2]
B−V color index +0.17[2]
Astrometry
Radial velocity (Rv)11.6[4] km/s
Proper motion (μ) RA: −7.27[1] mas/yr
Dec.: +2.45[1] mas/yr
Parallax (π)0.53 ± 0.42 mas[1]
Distance2,350[5] pc
Absolute magnitude (MV)−6.14[6]
Details[6]
Mass83.3 (58[7]) M☉
Radius15.9 R☉
Luminosity1,000,000 L☉
Surface gravity (log g)3.96 cgs
Temperature46,000 K
Rotational velocity (v sin i)130 km/s
Other designations
1E 104248-5918.0, XMMU J104444.8-593354, ALS 1859, 2E 2317, HIP 52558, CD-58°3537, GC 14791, CGO 246, GCRV 25947, PPM 339400, Trumpler 16 180, SAO 238423, Trumpler 14 101, TYC 8626-2075-1, CPC 20°3140, GOS G287.51-00.54 01, CPD−58°2661, GSC 08626-02075
Database references
SIMBADdata

HD 93250 is a highly luminous hot blue binary star in the Carina Nebula in the constellation Carina.

It is around 86 times as massive and a million times as luminous as the Sun.

References

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. ^ a b c Antokhin, I. I.; Rauw, G.; Vreux, J.-M.; Van Der Hucht, K. A.; Brown, J. C. (2008). "XMM-Newton X-ray study of early type stars in the Carina OB1 association". Astronomy and Astrophysics. 477 (2): 593. Bibcode:2008A&A...477..593A. doi:10.1051/0004-6361:20065711.
  3. ^ Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J. (2014). "The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars". The Astrophysical Journal Supplement. 211: 10. Bibcode:2014ApJS..211...10S. doi:10.1088/0067-0049/211/1/10.
  4. ^ Rauw, G.; Nazé, Y.; Fernández Lajús, E.; Lanotte, A. A.; Solivella, G. R.; Sana, H.; Gosset, E. (2009). "Optical spectroscopy of X-Mega targets in the Carina nebula - VII. On the multiplicity of Tr16-112, HD93343 and HD93250". Monthly Notices of the Royal Astronomical Society. 398 (3): 1582. arXiv:0906.2681. Bibcode:2009MNRAS.398.1582R. doi:10.1111/j.1365-2966.2009.15226.x.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  5. ^ Sana, H.; Le Bouquin, J.-B.; De Becker, M.; Berger, J.-P.; De Koter, A.; Mérand, A. (2011). "The Non-thermal Radio Emitter HD 93250 Resolved by Long Baseline Interferometry". The Astrophysical Journal Letters. 740 (2): L43. arXiv:1110.0831. Bibcode:2011ApJ...740L..43S. doi:10.1088/2041-8205/740/2/L43.
  6. ^ a b Repolust, T.; Puls, J.; Herrero, A. (2004). "Stellar and wind parameters of Galactic O-stars. The influence of line-blocking/blanketing". Astronomy and Astrophysics. 415: 349. Bibcode:2004A&A...415..349R. doi:10.1051/0004-6361:20034594.
  7. ^ Weidner, C.; Vink, J. S. (2010). "The masses, and the mass discrepancy of O-type stars". Astronomy and Astrophysics. 524: A98. arXiv:1010.2204. Bibcode:2010A&A...524A..98W. doi:10.1051/0004-6361/201014491.
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