Observations of cool stars at 20, 25, and 33 microns

Details Observations of cool stars at 20, 25, and 33 microns Observations of cool stars at 20, 25, and 33 microns

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pasp...94..835h&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 94, Oct.-Nov. 1982, p. 835-844.

Astronomy and Astrophysics

Astronomy

18

Cool Stars, Hydroxyl Emission, Infrared Astronomy, Interstellar Masers, M Stars, Stellar Envelopes, Stellar Mass Ejection, Cosmic Dust, Radiative Transfer, Red Giant Stars, Self Absorption, Silicates

Scientific paper

Broad-band 20-33 micron photometry is presented for a sample of cool stars. The long-wavelength flux is interpreted in terms of dust-shell models. It is found that the amount of silicate dust necessary to produce the observed 10 micron features can also produce the long-wavelength flux. The dust observations are used to derive lower limits for mass-loss rates. Sufficient 35 micron flux exists to pump the 1612 MHz OH masers for all stars observed in this sample, with the exception of R Aql. The data do not rule out the possibility of infrared pumping of the main-line masers.

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