On the source of the violet depression in carbon stars - A study of the Balmer decrement in carbon long-period variables

Details On the source of the violet depression in carbon stars - A study of the Balmer decrement in carbon long-period variables On the source of the violet depression in carbon stars - A study of the Balmer decrement in carbon long-period variables

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...317..819o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 317, June 15, 1987, p. 819-823.

Astronomy and Astrophysics

Astrophysics

5

Balmer Series, Carbon Stars, Stellar Models, Variable Stars, Mira Variables, Opacity, Stellar Composition, Stellar Spectra

Scientific paper

In an effort to determine the nature of the agent(s) of the violet depression in N-type stars through the behavior of their Balmer decrement, slit spectrograms of three C and one C-S type long-period variables (all reported to have the violet depression) were repeatedly taken between 1983 May and 1984 November. The observed phase-related changes in the Balmer decrement of two of these stars exclude the possibility that the absorbers are exclusively dust and/or polyatomic molecules. The exact nature and number of kinds of opacity carriers remains to be determined.

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