On the identification of FeH and CeO in S stars

Details On the identification of FeH and CeO in S stars On the identification of FeH and CeO in S stars

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...226..931c&link_type=abstract

Astrophysical Journal, Part 1, vol. 226, Dec. 15, 1978, p. 931-936. Research supported by the Robert A. Welch Foundation

Astronomy and Astrophysics

Astrophysics

16

Atmospheric Composition, Cerium Oxides, Iron Compounds, S Stars, Stellar Spectra, Abundance, Cerium Isotopes, Hydrides, Iron Isotopes, Mass Ratios, Molecular Spectra

Scientific paper

Observations of stellar spectra at a resolution of 0.2 A support the identification of FeH and CeO in S stars by resolving the rotational structure of the bands. FeH lines are also identified in 61 Cyg B (K5 V), Alpha Tau (K5 III), and in two M giants. CeO is present in the pure S star R Gem and in R And, an S star with TiO. The possibility of measuring Fe and Ce isotope ratios is discussed.

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