ISO observations of cold dust in NGC 6946

Details ISO observations of cold dust in NGC 6946 ISO observations of cold dust in NGC 6946

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..408..375t&link_type=abstract

The ultraviolet universe at low and high redshift. AIP Conference Proceedings, Volume 408, pp. 375-378 (1997).

Other

Interstellar Dust Grains, Diffuse Emission, Infrared Cirrus, Spiral Galaxies, Astronomical Observations

Scientific paper

A new technique for mapping the internal extinction of disc galaxies has been developed and the results of applying this technique to NGC 6946 are given in another paper in these Proceedings. The study required new and difficult observations covering a wide range of wavelengths. As is often the case when data are assembled in a new way, there have been a number of unexpected discoveries as a by-product of the main study. We present evidence for a new component of dust that is colder and considerably more massive than that detected by the IRAS satellite. This cold component is also more extended than the stars in the radial direction, contrary to the ``standard picture'' of dust distribution [9].

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