Bibcode
Lazaro, C.; Lynas-Gray, A. E.; Clegg, R. E. S.; Mountain, C. M.; Zadrozny, A.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 249, March 1, 1991, p. 62-68.
Fecha de publicación:
3
1991
Número de citas
17
Número de citas referidas
15
Descripción
Approximate carbon abundances and C-12/C-13 isotope ratios are obtained
for 70 M giant stars from intermediate-resolution spectrophotometry of
the CO bands near 2.3 microns. A low mean carbon abundance (C/H = -0.64
+ or - 0.29) is obtained, suggesting that standard mixing is
insufficient to explain atmospheric abundances in M giants. HR 8795
appears to be exceptionally carbon deficient, and is worthy of further
study as a possible weak G-band star descendant.