The shapes of the circumstellar silicate features

Details The shapes of the circumstellar silicate features The shapes of the circumstellar silicate features

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986inpr.conf..137l&link_type=abstract

In NASA. Ames Research Center Summer School on Interstellar Processes: Abstracts of Contributed Papers p 137-138 (SEE N87-15043

Astronomy and Astrophysics

Astronomy

10

Dust, Energy Distribution, Infrared Astronomy, M Stars, Silicates, Stellar Composition, Black Body Radiation, Emission Spectra, Grain Size, Infrared Astronomy Satellite

Scientific paper

Around oxygen-rich stars the spectra of most long-period variables (LPV) show an excess infrared emission which is attributed to circumstellar silicate dust grains. It is known that the spectral energy distribution of the 10 micron emissions shows variations from star to star. With the availability of many Infrared Astronomy Satellite (IRAS) Low Resolution Spectra (LRS) in the 8 to 22 micron region, the 10 micron feature can be studied to determine its uniformity (or lack thereof). The excess silicate emissions (10 micron emission), divided into three groups characterized by similar spectral shapes, are discussed.

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