Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-07-23
Astronomy and Astrophysics
Astrophysics
Short version (8 pages, 8 plots) of the paper to appear in Astronomy Reports, 2008, vol.52, No9, 749-759. C. Pleiades Publishi
Scientific paper
Absorption lines of the 12CO and 13CO molecular bands (Delta v = 2) at 2.29 -- 2.45 micron are modelled in spectrum of Arcturus (K2III). We compute a grid of model atmospheres and synthetic spectra for giant of Teff = 4300, log g = 1.5, and the elemental abundances of Peterson et al. (1993), but abundances of carbon, oxygen and the carbon isotopic ratio 12C/13C are varied in our computations. The computed spectra are fitted to the observed spectrum of Arcturus from the atlas of Hinkle et al. (1995). The best fit to observed spectrum is achieved for log N(C) = -3.78 +/- 0.1, 12C/13C = 8 +/- 1. A dependence of the determined 12C/13C vs. log N(C) and log N(O) in atmospheres of red giants is discussed.
No associations
LandOfFree
The Carbon Abundance and 12C/13C Isotopic Ratio in the Atmosphere of Arcturus from 2.3 micron CO Bands 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 The Carbon Abundance and 12C/13C Isotopic Ratio in the Atmosphere of Arcturus from 2.3 micron CO Bands, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Carbon Abundance and 12C/13C Isotopic Ratio in the Atmosphere of Arcturus from 2.3 micron CO Bands will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1000