Cold dust in galaxies

Details Cold dust in galaxies Cold dust in galaxies

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339..859e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 15, 1989, p. 859-871.

Astronomy and Astrophysics

Astronomy

80

Astronomical Photometry, Cosmic Dust, Interstellar Matter, Spiral Galaxies, Carbon Monoxide, Infrared Astronomy Satellite, Radiation Distribution, Spectral Energy Distribution, Temperature Distribution, Thermal Emission

Scientific paper

This paper presents 350-1100-micron continuum observations of the central regions of 11 spiral galaxies. Combining the submillimeter fluxes with IRAS data, it is found that the 60-1100-micron energy distributions of these galaxies can be well fitted by thermal emission from dust at a single temperature (T about 30-50 K). No direct evidence is found for the cold (T less than about 20 K) dust expected if dust is being heated by the interstellar radiation field of a normal galaxy. Estimates of the total mass of interstellar matter in these galaxies are lower than those estimated from CO 1-0 line measurements.

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