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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) 7.3 - 8.6[2]
Characteristics
Evolutionary stage Red supergiant
Spectral type M3 Ia[3]
U−B color index +0.75[4]
B−V color index +2.10[4]
Variable type LB[2]
Astrometry
Radial velocity (Rv)−39.67±0.66[1] km/s
Proper motion (μ) RA: −1.1[5] mas/yr
Dec.: 13.1[5] mas/yr
Parallax (π)0.5559 ± 0.1021 mas[1]
Distance6,850±650[6] ly
(2,100±200[6] pc)
Absolute magnitude (MV)−7.5[7]
Details
Mass20[6] M☉
Radius1,261[8] R☉
Luminosity254,000[8] L☉
Surface gravity (log g)−0.6[6] cgs
Temperature3,443–3,605[9] K
Other designations
HD 143183, CD-53 6947, IRAS 15576-5400, 2MASS J16013621-5408356
Database references
SIMBADdata
A visual band light curve for V558 Normae, plotted from ASAS data[10]

HD 143183 is a red supergiant variable 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 with a luminosity over 250,00 times greater than the Sun (L☉), and is as well one of the largest stars with a radius more than a thousand times that of the Sun (R☉).[8] Older studies frequently calculated higher luminosities and radii.[6][11] It has an estimated mass loss rate of 5×10−5 M☉ per year[6] and has been once described as a cool hypergiant.[12] It is surrounded by a dozen early-type stars and a circumstellar nebula which extends 0.12 parsecs (0.39 ly).

HD 143183 is catalogued with the variable star designation V558 Normae as its brightness varies irregularly between apparent magnitudes 7.3 and 8.6.[2]

It is possible that HD 143183 is a spectroscopic binary with an OB+ companion but this is considered doubtful.[6] HD 143183 lies approximately 1' from the 10th-magnitude O-class bright giant CD-53 6363, the second-brightest star in the cluster.

  1. ^ a b c d Cite error: The named reference dr2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference gcvs was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference messineo2019 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference klare was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference tycho was invoked but never defined (see the help page).
  6. ^ a b c d e f g Cite error: The named reference moffat was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference humphreys was invoked but never defined (see the help page).
  8. ^ a b c Healy, Sarah; Horiuchi, Shunsaku; Colomer Molla, Marta; Milisavljevic, Dan; Tseng, Jeff; Bergin, Faith; Weil, Kathryn; Tanaka, Masaomi; Otero, Sebastián (2024-04-01). "Red supergiant candidates for multimessenger monitoring of the next Galactic supernova". Monthly Notices of the Royal Astronomical Society. 529 (4): 3630–3650. arXiv:2307.08785. Bibcode:2024MNRAS.529.3630H. doi:10.1093/mnras/stae738. ISSN 0035-8711.
  9. ^ Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020). "Short Term Variability of Evolved Massive Stars with TESS II: A New Class of Cool, Pulsating Supergiants". The Astrophysical Journal. 902 (1): 24. arXiv:2008.11723. Bibcode:2020ApJ...902...24D. doi:10.3847/1538-4357/abb318. S2CID 221340538.
  10. ^ Cite error: The named reference ASASServer was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference blum was invoked but never defined (see the help page).
  12. ^ Stickland, D. J. (1985). "IRAS observations of the cool galactic hypergiants". The Observatory. 105: 229. Bibcode:1985Obs...105..229S.

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