The cool components of symbiotic stars. I - Optical spectral types

Details The cool components of symbiotic stars. I - Optical spectral types The cool components of symbiotic stars. I - Optical spectral types

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..938k&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 93, April 1987, p. 938-949. Research supported by the U.S.-Spanish Joint Committee f

Mathematics

Logic

152

Absorption Spectra, Cool Stars, Stellar Mass Ejection, Symbiotic Stars, Visible Spectrum, Mass Flow Rate, Mira Variables, Red Giant Stars, Stellar Luminosity, Titanium Oxides

Scientific paper

The authors present an analysis of prominent absorption features on red (λλ5500 - 8600 Å) spectra of symbiotic stars. The depths of TiO and VO bands appear to be correlated with the brightness of the system; this behavior is probably the result of the secondary star heating the outer atmosphere of the cool giant. The authors have derived new spectral types and luminosity classes for the cool components of symbiotics, and these classifications suggest a division into semidetached systems and detached systems. Mass-loss rates for detached symbiotics which do not contain Mira variables remain higher than those estimated for single red giants of the same spectral type, suggesting that the presence of a binary companion enhances mass loss in these objects.

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