Far Infrared mapping of NGC 891

Details Far Infrared mapping of NGC 891 Far Infrared mapping of NGC 891

2003-10-09

arxiv.org/abs/astro-ph/0310266v1

Astron.Astrophys.414:45-52,2004

Astronomy and Astrophysics

Astrophysics

accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20031581

We present deep maps of dust emission from the edge-on spiral galaxy NGC 891, obtained with the ISOPHOT instrument on board the Infrared Space Observatory in broad band filters with reference wavelengths centered on 170 and 200 micron. Using new processing methods to remove the effects of detector transients from the data, we detect cold dust at high dynamic range. The observed surface brightness distribution and colour profile of the far-infrared (FIR) emission are found to be in good agreement with predictions for their counterparts derived from the model of Popescu et al. (2000a). Thus, NGC 891 is the first galaxy for which an intrinsic distribution of dust and stars could be found which simultaneously accounts for both the optical/near-IR and FIR morphologies.

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