New low-resolution spectrometer spectra for IRAS sources

Abstract

view Abstract Citations (88) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS New Low-Resolution Spectrometer Spectra for IRAS Sources Volk, Kevin ; Kwok, Sun ; Stencel, R. E. ; Brugel, E. Abstract Low-resolution spectra of 486 IRAS point sources with Fnu(12 microns) in the range 20-40 Jy are presented. This is part of an effort to extract and classify spectra that were not included in the Atlas of Low-Resolution Spectra and represents an extension of the earlier work by Volk and Cohen which covers sources with Fnu(12 microns) greater than 40 Jy. The spectra have been examined by eye and classified into nine groups based on the spectral morphology. This new classification scheme is compared with the mechanical classification of the Atlas, and the differences are noted. Oxygen-rich stars of the asymptotic giant branch make up 33 percent of the sample. Solid state features dominate the spectra of most sources. It is found that the nature of the sources as implied by the present spectral classification is consistent with the classifications based on broad-band colors of the sources. Publication: The Astrophysical Journal Supplement Series Pub Date: December 1991 DOI: 10.1086/191617 Bibcode: 1991ApJS...77..607V Keywords: Asymptotic Giant Branch Stars; Infrared Astronomy Satellite; Infrared Sources (Astronomy); Stellar Spectra; Astronomical Catalogs; Spectral Resolution; Spectrometers; Astrophysics; INFRARED: SOURCES; INFRARED: SPECTRA; STARS: SPECTRAL CLASSIFICATION full text sources ADS | data products SIMBAD (502)