Spectral atlas of helium-rich stars

Details Spectral atlas of helium-rich stars Spectral atlas of helium-rich stars

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26as...41..271k&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 41, Aug. 1980, p. 271-294.

Astronomy and Astrophysics

Astrophysics

9

B Stars, O Stars, Stellar Spectra, Stellar Magnitude, Stellar Temperature, Tables (Data), Variable Stars

Scientific paper

An atlas of coude spectra of 33 helium-rich O- and B-stars and 11 comparison stars in the 3700-4600 A spectral range is presented. The atlas comprises stars with temperatures from 10,000 to 60,000 deg K in which He lines are visible in the spectra, and includes variable He stars; stars with spectral types O8 to B5 and magnitudes (m(v)) less than or equal to 11.0 are considered. The purpose of the atlas is to give a sample of spectra in which, from the observational point of view, the differences caused by certain physical parameters including effective temperature, logarithm of the gravity and observed rotational velocity, can be judged by eye. Mechanisms for He enrichment in the atmosphere are also discussed.

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