A search for (C-14)(O-16) in the atmospheres of evolved stars

Details A search for (C-14)(O-16) in the atmospheres of evolved stars A search for (C-14)(O-16) in the atmospheres of evolved stars

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...318..868h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 318, July 15, 1987, p. 868-872. Research supported by the Robert A. Welch F

Astronomy and Astrophysics

Astrophysics

10

Carbon Monoxide, Carbon Stars, S Stars, Stellar Atmospheres, Stellar Evolution, Stellar Spectrophotometry, Asymptotic Giant Branch Stars, Carbon 14, Giant Stars, Nuclear Fusion, Oxygen Isotopes, Spectrum Analysis

Scientific paper

The detection of (C-14)(O-16) in the spectra of MS, S, and C stars would provide evidence of the operation of the (C-13)(alpha, n)(O-16) process in the helium-burning shell during the double shell-burning phase corresponding to a star's sojourn on the AGB. In this paper, MS, S, and C star spectra of the first-overtone vibration-rotation bands of the CO molecule at 2.4 microns are analyzed, and no evidence for the presence of (C-14)(O-16) is found. Lower limits on the C-12/C-14 ratio ranging from 5000 to 28,500 are determined.

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