Spectral line identification studies of some stars with helium anomalies

Details Spectral line identification studies of some stars with helium anomalies Spectral line identification studies of some stars with helium anomalies

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975cajph..53.2170c&link_type=abstract

Canadian Journal of Physics, vol. 53, Oct. 1, 1975, p. 2170-2182. Research supported by the National Research Council of Canada

Physics

1

B Stars, Helium, Hot Stars, Line Spectra, Stellar Spectra, A Stars, Anomalies, Fine Structure, Identifying, Spectral Line Width, Tables (Data)

Scientific paper

Spectral line identification studies have been carried out at 12 A/mm for four peculiar helium stars in the Orion Belt Region and two standard stars. HD 36 526, HD 37 140, HD 37 321, and HD 37 479 (sigma Orionis E) are compared with the sharp-lined MK standards, nu Orionis (B3 V) and gamma Lyrae (B9 III). The first two program stars have weak helium lines for their colors and also some features similar to those found in the peculiar A stars. This supports the contention that the weak helium line stars are hot analogs of the Ap stars.

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