 HD 93129 surrounded by the lesser stars of Trumpler 14 Credit: NASA & ESA, Jesús Maíz Apellániz (Instituto de Astrofisica de Andalucia) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 43m 57.5s[1] |
| Declination | −59° 32′ 51.3″[1] |
| Apparent magnitude (V) | 6.90[2] (7.310[1] + 8.84[3]) |
| Characteristics | |
| A | |
| Spectral type | O2If*[4] (O2If+O3.5V[5]) |
| U−B color index | −0.81[3] |
| B−V color index | +0.25[3] |
| B | |
| Evolutionary stage | main sequence |
| Spectral type | O3.5 V((f))z[6] |
| U−B color index | −0.79[3] |
| B−V color index | +0.23[3] |
| Astrometry | |
| Radial velocity (Rv) | −0.4 ± 7.4[7] km/s |
| Proper motion (μ) | RA: -5.0[1] mas/yr Dec.: 17.0[1] mas/yr |
| Distance | 2,300[5] pc |
| Absolute magnitude (MV) | (A): −6.5 (−6.1 + −5.2) (B): −4.9[8] |
| Details | |
| Aa | |
| Mass | 110[8] M☉ |
| Radius | 22.5[9] R☉ |
| Luminosity | 1,480,000[10] L☉ |
| Surface gravity (log g) | 3.71[9] cgs |
| Temperature | 42,500[9] K |
| Rotational velocity (v sin i) | 130[9] km/s |
| Age | 0.9+0.2 −0.4[7] Myr |
| Ab | |
| Mass | 70[8] M☉ |
| Radius | 13.1[11] R☉ |
| Luminosity | 575,000[10] L☉ |
| Temperature | 44,000[11] K |
| B | |
| Mass | 52[12] M☉ |
| Radius | 13[12] R☉ |
| Luminosity | 575,000[10] L☉ |
| Surface gravity (log g) | 3.92[12] cgs |
| Temperature | 44,000[12] K |
| Rotational velocity (v sin i) | 112[7] km/s |
| Other designations | |
| A: TYC 8626-2805-1, ALS 15862, LS 1820 | |
| B: ALS 19309 | |
| Database references | |
| SIMBAD | HD 93129 |
| HD 93129 A | |
| HD 93129 B | |
HD 93129 is a triple star system in the Carina Nebula, with all three components being hot O class stars amongst the most luminous stars in the Milky Way. It is the dominant member of the Trumpler 14 star cluster, a young star cluster within the Carina OB1 stellar association that harbors other super-luminous stars, like Eta Carinae and WR 25.
- ^ a b c d e Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862. ISBN 0333750888.
- ^ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- ^ a b c d e Vazquez, R. A.; Baume, G.; Feinstein, A.; Prado, P. (1996). "Investigation on the region of the open cluster TR 14". Astronomy and Astrophysics Supplement. 116: 75. Bibcode:1996A&AS..116...75V.
- ^ 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 (1): 10. arXiv:1312.6222. Bibcode:2014ApJS..211...10S. doi:10.1088/0067-0049/211/1/10. S2CID 118847528.
- ^ a b Cohen, D. H.; Gagné, M.; Leutenegger, M. A.; MacArthur, J. P.; Wollman, E. E.; Sundqvist, J. O.; Fullerton, A. W.; Owocki, S. P. (2011). "Chandra X-ray spectroscopy of the very early O supergiant HD 93129A: Constraints on wind shocks and the mass-loss rate". Monthly Notices of the Royal Astronomical Society. 415 (4): 3354–3364. arXiv:1104.4786. Bibcode:2011MNRAS.415.3354C. doi:10.1111/j.1365-2966.2011.18952.x. S2CID 8258609.
- ^ 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.
- ^ a b c Penny, Laura R.; Gies, Douglas R.; Hartkopf, William I.; Mason, Brian D.; Turner, Nils H. (1993). "The frequency of binary stars in the young cluster Trumpler 14". Publications of the Astronomical Society of the Pacific. 105: 588. Bibcode:1993PASP..105..588P. doi:10.1086/133200.
- ^ a b c Nelan, Edmund P.; Walborn, Nolan R.; Wallace, Debra J.; Moffat, Anthony F. J.; Makidon, Russell B.; Gies, Douglas R.; Panagia, Nino (2004). "Resolving OB Systems in the Carina Nebula with the Hubble Space Telescope Fine Guidance Sensor". The Astronomical Journal. 128 (1): 323–329. Bibcode:2004AJ....128..323N. doi:10.1086/420716. S2CID 121115585.
- ^ a b c d 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: 349–376. Bibcode:2004A&A...415..349R. doi:10.1051/0004-6361:20034594.
- ^ a b c Smith, Nathan (2006). "A census of the Carina Nebula - I. Cumulative energy input from massive stars". Monthly Notices of the Royal Astronomical Society. 367 (2): 763–772. arXiv:astro-ph/0601060. Bibcode:2006MNRAS.367..763S. doi:10.1111/j.1365-2966.2006.10007.x. S2CID 14060690.
- ^ a b Del Palacio, Santiago; Bosch-Ramon, Valentí; Romero, Gustavo E.; Benaglia, Paula (2016). "A model for the non-thermal emission of the very massive colliding-wind binary HD 93129A". Astronomy & Astrophysics. 591: A139. arXiv:1604.07294. Bibcode:2016A&A...591A.139D. doi:10.1051/0004-6361/201628264. S2CID 55216290.
- ^ a b c d Vink, Jorick S; Davies, B; Harries, T. J; Oudmaijer, R. D; Walborn, N. R (2009). "On the presence and absence of disks around O-type stars". Astronomy and Astrophysics. 505 (2): 743. arXiv:0909.0888. Bibcode:2009A&A...505..743V. doi:10.1051/0004-6361/200912610. S2CID 16636438.