Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986afz....24..245n&link_type=abstract
(Astrofizika, vol. 24, Mar.-Apr. 1986, p. 245-255) Astrophysics (ISSN 0571-7132), vol. 24, no. 2, Sept. 1986, p. 142-149. Transl
Astronomy and Astrophysics
Astrophysics
1
Absorption Spectra, Carbon Stars, Molecular Absorption, Spectrum Analysis, Stellar Spectrophotometry, Carbon Isotopes, Hydrocarbons, Sodium, Spectral Bands
Scientific paper
The indices of the C2, CN, SiC2 and CH molecular bands of 56 carbon stars are determined. A definite dependence between these indices was considered. The comparison of the I(5635) and I(4737) indices outlines a division of stars into two banches. On the I(C12N) - I(C13N) diagram a separation of R and N stars is seen. A certain correlation is found between the Merrill-Sanford band and the sodium line indices. By the comparison of the C2 molecule I(4737) and the CH molecule G-band indices a certain group of stars is revealed in the wavelength region 4480 - 4610 Å of the spectrum of which intensive CN isotopic bands are observed.
Nersisian S. E.
Oganesian Kh. R.
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