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Date and Time of the Query: 2019-06-20 T12:40:14 PDT
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For refcode 1996A&A...315L.149T:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1996A&A...315L.149T ISOPHOT Maps of NGC 6946 in the range {lambda} 60-2005m. Tuffs R.J., Lemke D., Xu C., Davies J.I., Gabriel C., Heinrichsen I., Helou G., Hippelein H., Lu N.Y., Skaley D. Max-Planck-Institut fur Kernphysik, Saupferscheckweg 1, D-69117 Heidelberg, Germany Max Planck Institut fur Astronomie, Konigstuhl 17, D-69117 Heidelberg, Germany University of Wales, Department of Physics and Astronomy, College of Cardiff, UK ESA/Villafranca Satellite Tracking Station, P. O. Box 50727, E-28080 Madrid, Spain Infrared Processing and Analysis Center, JPL, California Institute of Technology, MS 100/22, Pasadena, CA 91125, USA Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, D-53121 Bonn, Germany Received 31 July 1996/Accepted 3 September 1996 Abstract. We present maps of NGC 6946 at {lambda} 61 and 205 microns 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 25 mag/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 205 microns, for which a dust to HI mass ratio of 0.0046 is inferred from the 205 micron brightness assuming a dust temperature of 15K. The disk scale length at both {lambda} 61 and 205 microns is similar to that seen in R- band. Keywords: galaxies - star formation - dust
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