The Strength of the Ca II K and Na I D Lines in the Spectra of B Stars: Implications for Interstellar Studies

Details The Strength of the Ca II K and Na I D Lines in the Spectra of B Stars: Implications for Interstellar Studies The Strength of the Ca II K and Na I D Lines in the Spectra of B Stars: Implications for Interstellar Studies

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990obs...110..145c&link_type=abstract

The Observatory, vol. 110, no. 1098, p. 145-149 (1990)

Physics

9

Scientific paper

Synthetic spectra based on the LTE model atmospheres of Kurucz have been used to calculate the expected equivalent widths of the Ca II K and Na I D2 lines as a function of effective temperature for the B stars. Calculations have also been performed for lines of S II (λ3933.29) and C II λ5889.78), which occur in the same spectral regions as Ca K and Na D2. The results will be of interest to those wishing to estimate the importance of stellar lines in studies of interstellar Ca II and Na I.

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