Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.216..613j&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 216, Oct. 1, 1985, p. 613-621.
Astronomy and Astrophysics
Astronomy
17
Radio Spectra, Radio Stars, Stellar Envelopes, Stellar Mass Ejection, Stellar Winds, Astronomical Maps, Optical Thickness, Planetary Nebulae, Radiant Flux Density
Scientific paper
Radio observations of six mass-loss stars have been made at 843 MHz to establish the low-frequency radio spectra. Five have been detected. Four of the detected stars have an ionized envelope which is optically thick at this frequency; the spectral indices are steeper than the value of 0.6 expected for a spherically symmetric, constant velocity outflow. The fifth star, Eta Carinae, has a flux density and spectrum consistent with an optically thin thermal source.
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