Infrared continuum and radio molecular line studies of circumstellar shells

Details Infrared continuum and radio molecular line studies of circumstellar shells Infrared continuum and radio molecular line studies of circumstellar shells

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983msngr..34...16q&link_type=abstract

ESO Messenger (ISSN 0722-6691), Dec. 1983, p. 16-18.

Astronomy and Astrophysics

Astronomy

Infrared Astronomy, Late Stars, Molecular Spectra, Radio Astronomy, Stellar Envelopes, Stellar Spectra, Continuous Spectra, Hydroxyl Emission, Line Spectra

Scientific paper

IR and radio molecular line observations furnish data that are significant not only in the investigtion of circumstellar shell parameters, but in the understanding of circumstellar molecular line excitation. Late-type stars undergo periodic intensity variation in both IR continuum and IR and radio molecular line emission. Molecular species having high dipole moment are very sensitive to radiation. Line shape change, as a function of stellar phase, merely reflects the stellar flux variation. Time-monitoring studies in the IR and mm molecular line emission range is therefore of great importance in the elucidation of circumstellar envelope inner and outer portion interaction via the mass loss phenomenon.

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