Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192..521a&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 192, Aug. 1980, p. 521-530.
Astronomy and Astrophysics
Astronomy
93
Companion Stars, Late Stars, Novae, Stellar Spectra, Electron Density (Concentration), Emission Spectra, Giant Stars, Infrared Spectroscopy, M Stars, Mira Variables, Star Clusters, Stellar Models, Variable Stars, White Dwarf Stars
Scientific paper
The paper demonstrates that symbiotic stars and the slow novae are the same phenomena exhibiting a range of associated time-scales, with slow novae being of intermediate speed. A summary is presented showing that both types of objects contain normal M giants of Mira variables; this does not agree with current single-star models for slow novae, according to which the M star is totally disrupted before the outburst. Spectral types of the late-type components are presented for nearly 80 symbiotic stars and slow novae, derived from 2 micron spectroscopy; it was found that the intensity of the emission spectrum and the electron density of the gas are functions of the spectral late-type star. Hydrogen shell flashes on a white dwarf accreting gas from the late-type components propose an explanation of the slow novae and symbiotic stars.
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