Classification of silicate emission sources observed with SWS

Details Classification of silicate emission sources observed with SWS Classification of silicate emission sources observed with SWS

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.427..401s&link_type=abstract

The Universe as Seen by ISO. Eds. P. Cox & M. F. Kessler. ESA-SP 427., p. 401

Physics

Iso-Sws, Agbs, Co2

Scientific paper

We present preliminary results from our effort to classify sources with silicate dust shells observed for the STARTYP1/2 and ZZSTARTY programs. To characterize our silicate sources, we calculate the silicate emission index, SE, developed by Sloan & Price (1995). This index is a quantative description of the shape of the 10 μm silicate emission feature as seen in the IRAS Low Resolution Spectrometer data of AGB stars. With the larger wavelength coverage and the higher spectral resolution of SWS, we can provide added details to the SE index. In particular, we detect correlations in the strength of the 4.27 μm CO2 band with the SE classification. The objective of the STARTYP1/2 and ZZSTARTY programs is to construct an ISO database for the spectral classification of the brightest representative sources. The final database will include all sources with full SWS grating scans or PHOT-S observations.

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