Symbiotic stars and dust

Details Symbiotic stars and dust Symbiotic stars and dust

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975mnras.171..171w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 171, Apr. 1975, p. 171-180.

Astronomy and Astrophysics

Astronomy

87

Cosmic Dust, Emission Spectra, Infrared Astronomy, Line Spectra, Stellar Spectra, Symbiotic Stars, Interstellar Matter, Luminous Intensity, Near Infrared Radiation, Spectral Bands, Tables (Data), Thermal Radiation

Scientific paper

New members of the class of very high excitation symbiotic stars, with relatively strong forbidden Fe VII lines, have been found. The strong unidentified emission band at 6830 A has been detected in two of these and its identification is discussed. There is a subgroup of high excitation objects which also emit near-infrared thermal radiation from dust grains and are distinguished by the properties of their emission-line spectra. It is proposed that the dust exists in neutral gas and that the optical and infrared spectra of this subgroup of symbiotic stars arise because they are radiation bounded either at their perimeter or around condensations.

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