Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.224..237h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 224, Jan. 1, 1987, p. 237-255. Research supported by th
Astronomy and Astrophysics
Astronomy
18
Carbon Isotopes, Line Spectra, Oxygen Isotopes, Solar Atmosphere, Abundance, Balloon Flight, Carbon Monoxide, Fourier Transformation, High Temperature, Solar System
Scientific paper
The abundances of C-12, C-13 and O-18 in the solar photosphere have been measured from more than 900 lines of the fundamental vibration-rotation bands of isotopically substituted CO species. It is found that log N(C-12) = 8.71 + or - 0.10, C-12/C-13 = 84 + or - 5, and O-16/O-18 = 440 + or - 50, i.e., the solar and terrestrial isotopic ratios are essentially identical. These results, together with the known abundances of lighter isotopes, constrain unorthodox models of the sun's evolution which require the surface layers to have been subjected to high temperatures. A requirement that the derived molecular abundance be independent of the excitation potential and wavelength is not met by all empirical model solar atmospheres. The Holweger and Muller (1974) model meets the requirement and the Vernazza, Avrett and Loeser (1976) model does not.
Goldman Aaron
Harris Michael J.
Lambert David L.
No associations
LandOfFree
The C-12/C-13 and O-16/O-18 ratios in the solar photosphere 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 C-12/C-13 and O-16/O-18 ratios in the solar photosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The C-12/C-13 and O-16/O-18 ratios in the solar photosphere will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1624017