Back نجوم النسق الأساسي من النوع B Arabic B-tip zvijezda glavnog niza BS Estrella de seqüència principal de tipus B Catalan Αστέρας τύπου Β Greek B motako sekuentzia nagusiko izar Basque ستاره نوع بی رشته اصلی Persian B-tyypin pääsarjan tähti Finnish Étoile bleu-blanc de la séquence principale French B színképtípusú csillag Hungarian Bintang deret utama tipe-B ID

B-type main-sequence star

A B-type main-sequence star (B V) is a main-sequence (hydrogen-burning) star of spectral type B and luminosity class V. These stars have from 2 to 16 times the mass of the Sun and surface temperatures between 10,000 and 30,000 K.[1] B-type stars are extremely luminous and blue. Their spectra have strong neutral helium absorption lines, which are most prominent at the B2 subclass, and moderately strong hydrogen lines. Examples include Regulus, Algol A and Acrux.[2]

  1. ^ Habets, G. M. H. J.; Heintze, J. R. W. (November 1981). "Empirical bolometric corrections for the main-sequence". Astronomy and Astrophysics Supplement. 46: 193–237. Bibcode:1981A&AS...46..193H., Tables VII and VIII.
  2. ^ SIMBAD, entries on Regulus, Algol A and Acrux accessed on June 19, 2007.

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