HD 32188

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HD 32188
Auriga constellation map.svg
Red circle.svg
Location of HD 32188 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension  05h 03m 18.63730s[1]
Declination +41° 26′ 29.9337″[1]
Apparent magnitude (V) 6.08[2]
Characteristics
Spectral type A2IIIshe[3]
U−B color index +0.22[2]
B−V color index +0.21[2]
Variable type Suspected[3]
Astrometry
Radial velocity (Rv)−0.7[4] km/s
Proper motion (μ) RA: −0.44[1] mas/yr
Dec.: −1.89[1] mas/yr
Parallax (π)1.64 ± 0.38[1] mas
Distanceapprox. 2,000 ly
(approx. 600 pc)
Absolute magnitude (MV)−2.87[3]
Details
Luminosity1,037[5] L
Temperature6,867[5] K
Rotational velocity (v sin i)23[6] km/s
Other designations
BD+41° 1044, HD 32188, HIP 23511, HR 1615, SAO 39979.
Database references
SIMBADdata

HD 32188 is suspected variable star in the northern constellation of Auriga. It is a shell star, which means it has a peculiar spectrum indicating there is a circumstellar disk of gas around the star's equator. While the spectral luminosity class is III, analysis of its colour and brightness suggest it more closely resembles a supergiant star.[3]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357Vizier catalog entry
  2. ^ a b c Guetter, H. H.; Hewitt, A. V. (June 1984), "Photoelectric UBV photometry for 317 PZT and VZT stars", Publications of the Astronomical Society of the Pacific, 96: 441–443, Bibcode:1984PASP...96..441G, doi:10.1086/131362
  3. ^ a b c d Hauck, B.; Jaschek, C. (February 2000), "A-shell stars in the Geneva system", Astronomy and Astrophysics, 354: 157–162, Bibcode:2000A&A...354..157H
  4. ^ Wilson, Ralph Elmer (1953), General Catalogue of Stellar Radial Velocities, Washington: Carnegie Institution of Washington, Bibcode:1953GCRV..C......0W
  5. ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x
  6. ^ Royer, F.; et al. (October 2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i", Astronomy and Astrophysics, 393: 897–911, arXiv:astro-ph/0205255, Bibcode:2002A&A...393..897R, doi:10.1051/0004-6361:20020943

External links[edit]