HD 38282

HD 38282

Observation data
Epoch J2000      Equinox J2000
Constellation Dorado
Right ascension 05h 38m 53.387s
Declination −69° 02′ 00.90″
Apparent magnitude (V) 11.11
Characteristics
Evolutionary stage Wolf Rayet
Spectral type WN5-6h+WN6-7h
B−V color index 0.3
Astrometry
Proper motion (μ) RA: 2.00 mas/yr
Dec.: 2.60 mas/yr
Distance±170,000 ly
(±52,000 pc)
Absolute magnitude (MV)-7.96[1]
Details
Mass>80+>90[2] M☉
Luminosity4,500,000 (combined)[1] L☉
Temperature47,000[1] K
Age~2[2] Myr
Other designations
Brey 89, BAT99 118, LMC WR144, R144
Database references
SIMBADdata

HD 38282 (R144, BAT99-118, Brey 89) is a massive binary star in the Tarantula Nebula (Large Magellanic Cloud), consisting of two hydrogen-rich Wolf-Rayet stars.[2][3]

Both stars are young and massive, amongst the most luminous known. They form a spectroscopic binary with a period of a few months. The orbit is not well known so the masses of the stars are only estimated.

See also

References

  1. ↑ 1.0 1.1 1.2 Hainich, R.; Rühling, U.; Todt, H.; Oskinova, L. M.; Liermann, A.; Gräfener, G.; Foellmi, C.; Schnurr, O.; Hamann, W. -R. (2014). "The Wolf-Rayet stars in the Large Magellanic Cloud: A comprehensive analysis of the WN class". arXiv:1401.5474v1 [astro-ph.SR].
  2. ↑ 2.0 2.1 2.2 Sana, H.; Van Boeckel, T.; Tramper, F.; Ellerbroek, L. E.; De Koter, A.; Kaper, L.; Moffat, A. F. J.; Schnurr, O.; Schneider, F. R. N.; Gies, D. R. (2013). "R144 revealed as a double-lined spectroscopic binary". Monthly Notices of the Royal Astronomical Society: Letters 432: 26. doi:10.1093/mnrasl/slt029.
  3. ↑ Schnurr, O.; Moffat, A. F. J.; Villar-Sbaffi, A.; St-Louis, N.; Morrell, N. I. (2009). "A first orbital solution for the very massive 30 Dor main-sequence WN6h+O binary R145". Monthly Notices of the Royal Astronomical Society 395 (2): 823. arXiv:0901.0698. Bibcode:2009MNRAS.395..823S. doi:10.1111/j.1365-2966.2009.14437.x.