| Issue |
A&A
Volume 377, Number 1, October I 2001
|
|
|---|---|---|
| Page(s) | 60 - 65 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20011091 | |
| Published online | 15 October 2001 | |
Research Note On the relation between the IR continuum and the active galactic nucleus in Seyfert galaxies*
1
European Southern Observatory, 85748 Garching, Germany
2
Instituto de Astrofísica de Canarias, 38200 La Laguna (Tenerife), Spain
Corresponding author: A. M. Pérez García, This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
15
November
2000
Accepted:
26
July
2001
Abstract
A sample of the brightest known Seyfert galaxies from the CfA sample is analyzed on the basis of ISO photometric and spectroscopic data. Regardless of the Seyfert type, the mid-IR continuum emission from these galaxies is found to be correlated with the coronal line emission arising in the nuclear active region. Conversely, the correlation degrades progressively when moving from the mid- to the far-IR emission, where it vanishes. It is concluded that the mid-IR emission is largely dominated by dust heated by processes associated with the active nucleus whereas the far-IR is a different component most probably unrelated with the active region. We suggest that the far-IR component is due to dust heated by the stellar population in the disks of these galaxies.
Key words: galaxies: Seyfert / infrared: galaxies
Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, The Netherlands and the UK) and with the participation of ISAS and NASA.
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.