Abstract
Representative 1–4 µm spectra of cool stars accross the transition 1 > C/O > 1 are shown. The 3.1 µm absorption feature is seen to be a characteristic of CS as well as C stars, though not of SC or S stars and is therefore a sensitive indicator of C/O variation when C/O ≃ 1.0. The depths of the various absorption features within the spectra of CS stars differ considerably from one star to the next while the SC stars all show very similar spectra. This is consistent with the pattern which has emerged from infrared photometry of these stars.
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© 1985 D. Reidel Publishing Company
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Catchpole, R.M., Whitelock, P.A. (1985). The Infrared Spectra of Red Variables: II The SC and CS Stars. In: Jaschek, M., Keenan, P.C. (eds) Cool Stars with Excesses of Heavy Elements. Astrophysics and Space Science Library, vol 114. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5325-3_3
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DOI: https://doi.org/10.1007/978-94-009-5325-3_3
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