Interpretation of Delta-v = 2 carbon monoxide lines in the spectrum of Alpha HER

Details Interpretation of Delta-v = 2 carbon monoxide lines in the spectrum of Alpha HER Interpretation of Delta-v = 2 carbon monoxide lines in the spectrum of Alpha HER

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.220..377h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 220, May 15, 1986, p. 377-382. NSERC-supported research

Astronomy and Astrophysics

Astronomy

2

Carbon Monoxide, Line Spectra, Red Giant Stars, Stellar Spectra, Carbon, Fourier Transformation, Stellar Atmospheres, Turbulence

Scientific paper

CO Δυ = 2 line profiles of α Her obtained from a high-resolution Fourier-transform spectrum are analysed by means of spherically extended model atmospheres. It is found that (1) line scattering is very small in spite of the low density in the outer atmosphere, (2) the microturbulence is about 3 km s-1, and (3) the star does not have an extended cool envelope. The carbon abundance appears to be solar.

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