Astron. Astrophys. 315, L82-L84 (1996)
Analysis of the ISOPHOT FIR maps of M51 and M101*
H. Hippelein1, D. Lemke1, M. Haas1, C.M. Telesco3, R.J. Tuffs2, H.J. Völk2, C. Xu2, U. Klaas4, and U. Kinkel4
1 Max-Planck-Institut für Astronomie, Königstuhl
D-69117 Heidelberg, Germany
Received 11 July 1996 / Accepted 5 September 1996
Abstract. The far-IR ISOPHOT maps of the spiral galaxies M51 and M101 at 60, 100, and at 175 m are analysed. For all areas in these galaxies the spectral energy distributions can be fitted with a single-temperature emission curve. Colours and dust temperatures were estimated for interesting sub-fields. The temperatures vary between 33K for HII regions, and 28K for the disk, arm and interarm regimes.
Key words: galaxies - star formation - dust
* ISO is an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, the Netherlands and the United Kingdom) and with the participation of ISAS and NASA.
Last change: December 16, 1996