Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982saosr.392a.231h&link_type=abstract
In Smithsonian Astrophysics Observatory 2nd Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, Vol. 1 p 231-238 (
Astronomy and Astrophysics
Astrophysics
2
Excitation, Infrared Spectra, Interstellar Gas, Stellar Envelopes, Stellar Mass, Supergiant Stars, Chromosphere, Ionization, Luminosity, Stellar Spectra, Turbulence
Scientific paper
This paper presents the results of a study of circumstellar gas and dust in a larger sample of stars than that of Hagen (1978). The gas-to-dust ratio varies considerably from star to star. The observations were obtained at Cerro Tololo Interamerican Observatory and Kitt Peak National Observatory. CS gas was observed with 2.5 and 5.1 A/mm echelle spectra obtained with the 4-meter telescopes. CS dust was observed through infrared photometry done with the CTIO 60 and KPNO 50 telescopes.
Dickinson Dale F.
Hagen Wim
Humphreys Roberta M.
Stencel Robert E.
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