| | |
| | |
Stat |
Members: 3645 Articles: 2'501'711 Articles rated: 2609
19 April 2024 |
|
| | | |
|
Article overview
| |
|
Mid-Infrared Imaging of Active Galaxies: Active Nuclei and Embedded Star Clusters | E. Galliano
; D. Alloin
; E. Pantin
; P.O. Lagage
; O. Marco
; | Date: |
5 Apr 2005 | Subject: | astro-ph | Abstract: | High resolution, mid-infrared (MIR) images of a set of nine nearby active galaxies are presented. The data were obtained with the TIMMI2 instrument mounted at the ESO 3.6m telescope using a set of N-band narrow filters. The resulting images have an angular resolution of 0.6"-1". The MIR emission has been resolved in four galaxies: NGC253, NGC1365, NGC1808 and NGC7469. The images unveil a circumnuclear population of unknown MIR sources in NGC1365 and NGC1808, coincident with radio sources. These MIR/radio sources are interpreted in terms of embedded young star clusters. A high-resolution MIR map of NGC253 is also presented, and enables the identification of a previously unknown MIR counterpart to the radio nucleus. Extended MIR emission is detected in NGC7469, and concurs with previous observations in the NIR and radio. For this source, an interesting morphological difference between the 10.4mic and the 11.9mic emission is observed, suggesting the presence of a dust-rich micro-bar. Our MIR images of Circinus do not show resolved emission from the nucleus down to an angular scale of 0.5". In the case of NGC2992, an upper limit to the extended MIR emission can be set. Finally, we provide new MIR flux measurements for the unresolved AGN in NGC5995, IZw1 and IIZw136. | Source: | arXiv, astro-ph/0504118 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |