HD 143183

HD 143183

HD 143183 (brightest star in the image) as seen from the Rutherfurd Observatory.
Observation data
Epoch J2000      Equinox J2000
Constellation Norma
Right ascension 16h 01m 22.2226s[1]
Declination 54° 08′ 35.6066″[1]
Apparent magnitude (V) 8.24[2]
Characteristics
Spectral type M3 Ia[3]
U−B color index +0.75[2]
B−V color index +2.10[2]
Astrometry
Radial velocity (Rv)–39.67±0.66[1] km/s
Proper motion (μ) RA: –1.1[4] mas/yr
Dec.: 13.1[4] mas/yr
Parallax (π)0.5559 ± 0.1021[5] mas
Distance6,850±650[3] ly
(2,100±200[3] pc)
Absolute magnitude (MV)−7.5[6]
Details
Mass20[3] M☉
Radius1,480[7] (-1,830[3])[lower-alpha 1] R☉
Luminosity320,000[3][7] L☉
Surface gravity (log g)–0.6[3] cgs
Temperature3,570[7] K
Other designations
HD 143183, CD-53 6947, IRAS 15576-5400, 2MASS J16013621-5408356
Database references
SIMBADdata

HD 143183 is a red supergiant star of spectral type M3Ia in constellation Norma. It is a member of the Norma OB1 association, at a distance of about 2 kiloparsecs. It is one of the most luminous red supergiants, and thus is also one of the largest stars. It has an estimated mass loss rate of 5×10−5 M☉ per year.[3] It is surrounded by a dozen early-type stars and a circumstellar nebula with a radius of 0.12 parsecs (0.39 ly). It is possible that HD 143183 is a spectroscopic binary with an OB+ companion but this is considered doubtful.[3] HD 143183 lies approximately 1' from the 10th-magnitude O-class bright giant CD-53 6363, the second-brightest star in the cluster.

References

  1. 1 2 3 "VizieR Online Data Catalog: Gaia DR2 (Gaia Collaboration, 2018)". Vizier Online Data Catalog: I/345. 2018. Bibcode:2018yCat.1345....0G.
  2. 1 2 3 . Bibcode:1977A&AS...27..215K. Missing or empty |title= (help)
  3. 1 2 3 4 5 6 7 8 9 Moffat, A. F. J. (August 1976). "Mass loss from the M 3 supergiant HD 143183 in a young compact star cluster in Norma". Astronomy and Astrophysics. 50 (3): 429–434. Bibcode:1976A&A....50..429M.
  4. 1 2 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.
  5. ↑ 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.
  6. ↑ Humphreys, R. M (1978). "Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way". The Astrophysical Journal Supplement Series. 38: 309. doi:10.1086/190559.
  7. 1 2 3 Blum, R. D; Ramirez, Solange V; Sellgren, K; Olsen, K (2003). "Really Cool Stars and the Star Formation History at the Galactic Center". The Astrophysical Journal. 597 (1): 323–346. Bibcode:2003ApJ...597..323B. doi:10.1086/378380.

Notes

  1. ↑ Applying the Stefan-Boltzmann Law with a nominal solar effective temperature of 5,772 K: and


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