Carbon isotope ratios and lithium abundances in old disk giants

Details Carbon isotope ratios and lithium abundances in old disk giants Carbon isotope ratios and lithium abundances in old disk giants

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..337s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 686, p. 337-349.

Astronomy and Astrophysics

Astronomy

33

Abundance, Carbon Isotopes, Giant Stars, Late Stars, Lithium, Color-Magnitude Diagram, Metallicity, Stellar Evolution, Stellar Magnitude, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

C isotope ratios are here derived from CN red system features in 8000 A CCD spectra, together with Li abundances from the resonance doublet at 6708 A, for stars of a previously studied sample of old disk giants. The C isotope ratios of the old disk stars show a pronounced dependence on stellar luminosity, from C-12/C-13 values of above 40 in stars of M(V) greater than 1.8, to about 13 for those of M(V) below 1.8. The Li abundances assist in the discrimination of true old-disk giants from those which may belong to the young disk population. The great change in C-12/C-13 ratios occurring abruptly at M(V) of about 1.8 seems to be primarily due to the first dredge-up.

Affiliated with

Also associated with

No associations

Rating

Carbon isotope ratios and lithium abundances in old disk giants does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Carbon isotope ratios and lithium abundances in old disk giants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon isotope ratios and lithium abundances in old disk giants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1374445