The 10-200 micron spectral energy distribution of the prototype Narrow-Line X-ray galaxy NGC 7582

Details The 10-200 micron spectral energy distribution of the prototype Narrow-Line X-ray galaxy NGC 7582 The 10-200 micron spectral energy distribution of the prototype Narrow-Line X-ray galaxy NGC 7582

1999-06-28

arxiv.org/abs/astro-ph/9906444v1

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures, gzipped tar file

Scientific paper

We present the spectral energy distribution (SED) between 10 and 200 micron obtained for the prototype Narrow-Line X-Ray Galaxy NGC 7582 with ISOPHOT, the photometer on board the Infrared Space Observatory. The emission is spatially extended and we separated for the first time the nuclear and extranuclear infrared SEDs. The nuclear luminosity is dominated by cold (T ~ 32 K) dust emission mainly due to star formation activity; warm (T ~ 122 K) dust emission is also present and is probably related to the active nucleus. In addition to a cold component of 30 K, the extranuclear SED shows emission by colder (T ~ 17 K) dust: this very cold component comprises 90% of the total dust mass of 10**8 Msun.

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