THE SPECTRUM OF FG SAGITTAE IN 1975

The spectrum of FG Sge in 1975 is compared with spectra of la and Ib supergiants of class F5 to G5. The cooling trend described by Langer, Kraft, and Anderson as taking place up to 1972 has continued, but possibly at a faster rate since 1972. The enhancement of rare-earth abundances also is confirme...

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Published inPublications of the Astronomical Society of the Pacific Vol. 88; no. 521; pp. 67 - 68
Main Authors SMOLINSKI, J., CLIMENHAGA, J. L., KIPPER, T.
Format Journal Article
LanguageEnglish
Published The Astronomical Society of the Pacific 01.02.1976
Subjects
Astronomical spectroscopy
Astronomy
Continuous spectra
Observatories
Stars
Stellar spectra
Stellar spectral lines
Supergiant stars
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Summary:The spectrum of FG Sge in 1975 is compared with spectra of la and Ib supergiants of class F5 to G5. The cooling trend described by Langer, Kraft, and Anderson as taking place up to 1972 has continued, but possibly at a faster rate since 1972. The enhancement of rare-earth abundances also is confirmed. Molecular bands are not observed.
ISSN:0004-6280
1538-3873
DOI:10.1086/129898