Physics
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40112s&link_type=abstract
Spitzer Proposal ID #40112
Physics
Scientific paper
We propose to observe a sample of 20 naked M giants from M0 III to M6 III in order to quantify the dependence of silicon monoxide equivalent width and infrared continuum shape on spectral class. Having a sample of three sources at each spectral class will probe the intrinsic spread of these parameters within each spectral class. These observations will improve our understanding of how the strength and shape of the SiO band at 8 um, varies with photospheric temperature. We will also search for differences between the assumed and observed continuum shape out to 38 um. These observations will also provide a pool of spectra which will reduce errors in the assumed spectra used to isolate the spectral contribution from circumstellar shells and disks. This IRS GTO proposal requests 5.2 hours of IRS time.
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