Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.4901m&link_type=abstract
American Astronomical Society, 183rd AAS Meeting, #49.01; Bulletin of the American Astronomical Society, Vol. 25, p.1366
Astronomy and Astrophysics
Astronomy
Scientific paper
Nine sources selected from the IRAS Point Source Catalog have been mapped at the wavelengths 1100 and 800 microns, and some have been mapped at 450 microns. These objects have been studied previously at J=1-0 CO and 6 cm continuum wavelengths by McCutcheon et al. A.J. 101, 1435, 1991 and were chosen here to represent various stages of evolution. With the IRAS flux values, we have 6 or 7 far-IR flux measurements defining the spectral energy distribution. Using a model with 4 input parameters, all spectral energy distributions are fitted well by two components, a cool (approx. 35K) large outer shell, and a hot (approx. 120K) small inner core. Log luminosity values, relative to solar, range from 3.0 to 4.4. Spectral line observations of the associated molecular clouds allow us to compare the temperatures of the gas and dust environments.
Dewdney Peter E.
Matthews Henry E.
McCutcheon William H.
Purton C. R.
Sato Takeshi
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