Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasp..102..190l&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, Feb. 1990, p. 190-199. Research supported by USAF.
Astronomy and Astrophysics
Astronomy
9
Infrared Spectrometers, Infrared Stars, Stellar Spectra, Variable Stars, Abundance, Data Acquisition, Emission Spectra, Infrared Astronomy Satellite, Late Stars, Prisms
Scientific paper
A 9-14-micron slit spectrometer employing a novel mosaic array of 58 x 62 detectors is described. The spectrometer has been used on the University of Wyoming 2.3-m telescope with a 0.9-arcsec/pixel (reimaged) plate scale to obtain spectra of long-period variable stars. The instrumental spectral resolution and spatial point-spread function are characterized using spectra and spatial profiles extracted from spectral images of the variable stars. In order to evaluate the effectiveness of the data-acquisition and reduction procedures, the spectra are compared with examples found in the Atlas of IRAS Low Resolution Spectra for single representatives of three diverse object classes (oxygen-rich stars with strong silicate feature emission, carbon-rich stars with silicon carbide emission, and late-type stars exhibiting photospheric continuum radiation).
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