ISOPHOT Maps of NGC 6946 in the range λ 60-200μm.

Tuffs, R J., Lemke, D., Xu, C., Davies, Jonathan, Gabriel, C., Heinrichsen, I., Helou, G., Hippelein, H., Lu, N.Y. and Skaley, D. 1996. ISOPHOT Maps of NGC 6946 in the range λ 60-200μm. Astronomy and Astrophysics 315 , L149-L152.

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Abstract

We present maps of NGC 6946 at λ 61 and 205μm as well as scans through the galaxy at these and at 8 intermediate wavelengths. The bulk of the FIR luminosity arises from a diffuse disk component which extends beyond the 25mag/arcsec^2^ B isophote to at least the radius corresponding to the sensitivity limit. A FIR emission counterpart to the outlying HI disk is seen at both 61 and 205μm, for which a dust to HI mass ratio of 0.0046 is inferred from the 205μm brightness assuming a dust temperature of 15K. The disk scale length at both λ 61 and 205μm is similar to that seen in R-band.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	galaxies, star formation, dust
Publisher:	EDP Sciences
ISSN:	0004-6361
Related URLs:	http://articles.adsabs.harvard.edu/full/...
Date of Acceptance:	3 September 1996
Last Modified:	04 Jun 2017 08:26
URI:	https://orca.cardiff.ac.uk/id/eprint/77997

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