Cold dust in galaxies

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/167341· OSTI ID:5856024

Eales, S A; Wynn-Williams, C G; Duncan, W D

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. 50 refs.

• Research Organization: Hawaii Univ., Honolulu (USA); Edinburgh Royal Observatory (England); Infrared Telescope Unit, Hilo, HI (USA)
• OSTI ID: 5856024
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 339; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CONFIGURATION
COSMIC DUST
DUSTS
ELECTROMAGNETIC RADIATION
ENERGY SPECTRA
GALAXIES
INFRARED RADIATION
INTERSTELLAR SPACE
MASS
OXIDES
OXYGEN COMPOUNDS
PHOTOMETRY
RADIATIONS
SPACE
SPECTRA
SPIRAL CONFIGURATION
TEMPERATURE DISTRIBUTION