 HD 93250 is the bright star just above and left of the centre of this image of the Carina Nebula, directly above the Keyhole Nebula. Credit: ESO | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 44m 45.028s[1] |
| Declination | −59° 33′ 54.68″[1] |
| Apparent magnitude (V) | 7.41[2] |
| Characteristics | |
| Spectral type | O4 IV(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: −7.116[1] mas/yr Dec.: +3.081[1] mas/yr |
| Parallax (π) | 0.4115 ± 0.0199 mas[1] |
| Distance | 7,900 ± 400 ly (2,400 ± 100 pc) |
| Absolute magnitude (MV) | −6.14[5] |
| Orbit[6] | |
| Period (P) | 194.31±0.39 d |
| Semi-major axis (a) | 1.224±0.028 mas |
| Eccentricity (e) | 0.217±0.011 |
| Inclination (i) | 22±41° |
| Longitude of the node (Ω) | 59±20° |
| Argument of periastron (ω) (secondary) | 171±24° |
| Details[5] | |
| Radius | 15.9 R☉ |
| Luminosity | 1,000,000 L☉ |
| Surface gravity (log g) | 3.96 cgs |
| Temperature | 46,000 K |
| Rotational velocity (v sin i) | 130 km/s |
| Age | 1.3 Myr |
| A | |
| Mass | 49[6] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 93250 is a highly luminous hot blue binary star in the Carina Nebula in the constellation Carina.
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ 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. arXiv:0711.3612. Bibcode:2008A&A...477..593A. doi:10.1051/0004-6361:20065711. S2CID 82888037.
- ^ Maíz Apellániz, J.; Sota, A.; Arias, J. I.; Barbá, R. H.; Walborn, N. R.; Simón-Díaz, S.; Negueruela, I.; Marco, A.; Leão, J. R. S.; Herrero, A.; Gamen, R. C.; Alfaro, E. J. (2016). "The Galactic O-Star Spectroscopic Survey (GOSSS). III. 142 Additional O-type Systems". The Astrophysical Journal Supplement Series. 224 (1): 4. arXiv:1602.01336. Bibcode:2016ApJS..224....4M. doi:10.3847/0067-0049/224/1/4. S2CID 55658165.
- ^ 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): 1582–1592. arXiv:0906.2681. Bibcode:2009MNRAS.398.1582R. doi:10.1111/j.1365-2966.2009.15226.x. S2CID 13890955.
- ^ 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.
- ^ a b Le Bouquin, J. -B; Sana, H.; Gosset, E.; De Becker, M.; Duvert, G.; Absil, O.; Anthonioz, F.; Berger, J. -P.; Ertel, S.; Grellmann, R.; Guieu, S.; Kervella, P.; Rabus, M.; Willson, M. (2017). "Resolved astrometric orbits of ten O-type binaries". Astronomy and Astrophysics. 601: A34. arXiv:1608.03525. Bibcode:2017A&A...601A..34L. doi:10.1051/0004-6361/201629260. S2CID 53686222.