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Cold dust in galaxies

Eales, Stephen Anthony, Wynn-Williams, C. G. and Duncan, W. D. 1990. Cold dust in galaxies. Presented at: Kona Symposium on Millimetre and Submillimetre Astronomy, Kona, Hawaii, 3–6 October 1988. Published in: Watt, Graeme D. and Webster, Adrian S. eds. Submillimetre Astronomy: Proceedings of the Kona Symposium on Millimetre and Submillimetre Astronomy, Held at Kona, Hawaii, October 3–6, 1988. Astrophysics and Space Science Library , vol. 158. Dordrecht: Springer Netherlands, pp. 217-218. 10.1007/978-94-015-6850-0_80

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Models for dust heated by the interstellar radiation field of a normal galaxy show that most of the thermal emission from the dust should be occurring in the submillimeter waveband (100 µm < λ < 1000 µm) (Spitzer 1978; Draine and Lee 1984; Draine and Anderson 1985). The IRAS survey confirmed that because most galaxies are emitting more strongly at 100 µm than at 60 µm, much of a galaxy’s emission should be in this wavelength region. We have used the UKT14 bolometer on the United Kingdom Infrared Telescope to observe the submillimeter emission from a sample of 11 spiral galaxies that are bright at 100 pm. The instrumental beam of the bolometer system has an approximately Gaussian shape with size (FWHM) of ≈80 arcsec. We used a beam separation of 136 arcsec E-W. The flux calibration and the extinction coefficients were obtained from observations of Saturn, Uranus, OMC-1, and IRC+10216. More details are given in Eales, Wynn-Williams, and Duncan (1989).

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Springer Netherlands
ISBN: 9789401568524
ISSN: 0067-0057
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Last Modified: 04 Jun 2017 05:11

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