BAT99-98

BAT99-98
Observation data
Epoch J2000      Equinox J2000
Constellation Dorado
Right ascension 05h 38m 39.144s[1]
Declination −69° 06′ 21.30″[1]
Apparent magnitude (V) 13.38[2]
Characteristics
Evolutionary stage Wolf–Rayet star
Spectral type WN6[3]
B−V color index -0.10[2]
Astrometry
Proper motion (μ) RA: 1.680[1] mas/yr
Dec.: 0.512[1] mas/yr
Parallax (π)0.0288 ± 0.0159 mas[1]
Distance165,000 ly
(50,600 pc)
Absolute magnitude (MV)-8.11[3]
Absolute bolometric
magnitude (Mbol)		-12.0[3]
Details
Mass226[3] M☉
Radius37.5[3] R☉
Luminosity5,000,000[3] L☉
Luminosity (visual, LV)141,000[3] L☉
Temperature45,000[3] K
Age7.5[4] Myr
Other designations
Brey 79, NGC 2070 MEL J, SSTISAGEMC J053839.14-690621.2, BAT99 98, LMC AB12, Melnick 49, 2MASS J05383914-6906211, UCAC4 105‑014273, Gaia EDR3 4657679654981424640
Database references
SIMBADdata

BAT99-98 is a Wolf–Rayet star located in the Large Magellanic Cloud, in NGC 2070 near the R136 cluster in the Tarantula Nebula (30 Doradus). At 226 M☉ and 5,000,000 L☉ it is one of the most massive and luminous stars currently known.[3]

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b Doran, E. I.; Crowther, P. A.; de Koter, A.; Evans, C. J.; McEvoy, C.; Walborn, N. R.; Bastian, N.; Bestenlehner, J. M.; Grafener, G.; Herrero, A.; Kohler, K.; Maiz Apellaniz, J.; Najarro, F.; Puls, J.; Sana, H.; Schneider, F. R. N.; Taylor, W. D.; van Loon, J. Th.; Vink, J. S. (2013). "The VLT-FLAMES Tarantula Survey – XI. A census of the hot luminous stars and their feedback in 30 Doradus". Astronomy & Astrophysics. 558: A134. arXiv:1308.3412v1. Bibcode:2013A&A...558A.134D. doi:10.1051/0004-6361/201321824. S2CID 118510909.
  3. ^ a b c d e f g h i 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". Astronomy & Astrophysics. 565: A27. arXiv:1401.5474. Bibcode:2014A&A...565A..27H. doi:10.1051/0004-6361/201322696. S2CID 55123954.
  4. ^ Selman, F. J.; Melnick, J. (2005). "The IMF of the field population of 30 Doradus". Astronomy and Astrophysics. 443 (3): 851. Bibcode:2005A&A...443..851S. doi:10.1051/0004-6361:20042173. S2CID 120118444.