Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..280p.340s&link_type=abstract
The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Tole
Astronomy and Astrophysics
Astronomy
Scientific paper
The results of optical spectra analysis of two carbon-rich long-period variables V1983 Cyg and V2047 Cyg are presented. The stars were suspected to be cool R CrB variables candidates according to the photometric light curves. We compared the spectroscopic properties of the selected stars with those of DY Per and ordinary carbon stars to check their possible connection to cool RCBs. Also the spectral synthesis technique was used for analysis of the obtained high-resolution spectra, dominated by strong absorption features of carbon-bearing molecules. Our spectroscopic study suggests that both stars are more similar to ordinary N-type carbon stars than to DY Per star. For V1983 Cyg star possible absorption in Balmer lines is detected.
Kaminsky B.
Pavlenko Ya. V.
Smirnova Olga
Zavcs L.
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