A survey of Balmer-line profiles and IRAS fluxes in forty yellow supergiants

Details A survey of Balmer-line profiles and IRAS fluxes in forty yellow supergiants A survey of Balmer-line profiles and IRAS fluxes in forty yellow supergiants

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100..834s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 100, Sept. 1990, p. 834-848.

Astronomy and Astrophysics

Astronomy

9

Balmer Series, Infrared Astronomy Satellite, Sky Surveys (Astronomy), Supergiant Stars, Absorption Spectra, Emission Spectra, H Alpha Line, Infrared Radiation, Stellar Color

Scientific paper

Results of a survey of yellow supergiants (predominantly F and G) that was undertaken to search for distorted Balmer lines are presented. A comparison between the photometrically variable and nonvariable supergiants is made with respect to the distorted and undistorted Balmer-line profiles. To complement the analysis, IRAS data are used to detect excess infrared emission, to infer circumstellar dust, and to suggest a possible prior M supergiant evolutionary phase. Plans for future work are briefly discussed.

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