WR 150

Last updated
WR 150
Observation data
Epoch J2000       Equinox J2000
Constellation Cygnus
Right ascension 21h 50m 05.57248s [1]
Declination +50° 42′ 24.7151″ [1]
Apparent magnitude  (V)13.47
Characteristics
Evolutionary stage Wolf-Rayet
Spectral type WC5 [2]
B−V color index 0.53 [3]
Astrometry
Parallax (π)0.024±0.0255  mas [1]
Distance 8,730+1,700
−1,380 [4]   pc
Absolute magnitude  (MV)−5.26 [2]
Details
Mass 24.8 [2]   M☉
Radius 3.59 [2]   R☉
Luminosity 724,000 [2]   L☉
Temperature 89,000 [2]   K
Other designations
2MASS  J21500557+5042247
Database references
SIMBAD data

WR 150 is a Wolf-Rayet star in the constellation of Cygnus. It is one of the early-type carbon sequence (WCE), and is of spectral type WC5. WR 150 is very far from the Earth, being 28,500 light-years from it.

Properties

Wolf-Rayet stars are extremely hot stars, and WR 150 is no exception, and is even hotter than most Wolf-Rayet stars. WR 150 has a temperature approaching 90,000 K, similar to WR 111. However unlike WR 111, WR 150 is more than 3 times more luminous than it. As a result, intrinsically, WR 150 is a full magnitude brighter than WR 111. [5]

WR 150 loses mass much more quickly than almost any WC star. It loses 10−4.19 M☉ (about 6.46×10−5  M☉ ) a year, on a strong stellar wind with a terminal velocity of 3,000 kilometres per second. This means that in 50,000 years, WR 150 will have lost around 3.2 solar masses.

References

  1. 1 2 3 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  2. 1 2 3 4 5 6 Sander, A. A. C.; Hamann, W.-R.; Todt, H.; Hainich, R.; Shenar, T.; Ramachandran, V.; Oskinova, L. M. (2019-01-01). "The Galactic WC and WO stars. The impact of revised distances from Gaia DR2 and their role as massive black hole progenitors". Astronomy and Astrophysics. 621: A92. arXiv: 1807.04293 . Bibcode:2019A&A...621A..92S. doi:10.1051/0004-6361/201833712. ISSN   0004-6361. S2CID   67754788.
  3. ↑ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". VizieR Online Data Catalog. 2237. Bibcode:2002yCat.2237....0D.
  4. ↑ Rate, Gemma; Crowther, Paul A. (2020-03-01). "Unlocking Galactic Wolf-Rayet stars with Gaia DR2 - I. Distances and absolute magnitudes". Monthly Notices of the Royal Astronomical Society. 493 (1): 1512–1529. arXiv: 1912.10125 . Bibcode:2020MNRAS.493.1512R. doi: 10.1093/mnras/stz3614 . ISSN   0035-8711.
  5. ↑ Sander, A. A. C.; Hamann, W.-R.; Todt, H.; Hainich, R.; Shenar, T.; Ramachandran, V.; Oskinova, L. M. (2019-01-01). "The Galactic WC and WO stars. The impact of revised distances from Gaia DR2 and their role as massive black hole progenitors". Astronomy and Astrophysics. 621: A92. arXiv: 1807.04293 . Bibcode:2019A&A...621A..92S. doi:10.1051/0004-6361/201833712. ISSN   0004-6361. S2CID   67754788.
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