| | |
| | |
Stat |
Members: 3645 Articles: 2'506'133 Articles rated: 2609
26 April 2024 |
|
| | | |
|
Article overview
| |
|
Double nucleus in M83 | D. Mast
; R. J. D’{i}az
; M. P. Aguero
; | Date: |
12 May 2005 | Subject: | astro-ph | Abstract: | M 83 is one of the nearest galaxies with an enhanced nuclear star formation and it presents one of the best opportunities to study the kinematics and physical properties of a circumnuclear starburst. Our 3D spectroscopy data in R band confirm the presence of a secondary nucleus or mass concentration (previously suggested by Thatte et al. 2000). We determine the position of this hidden nucleus, which would be more massive than the visible one, and was not detected in the optical HST images due, probably, to the strong dust extinction. The optical nucleus has a mass of 5 x 10^6 M_Sun / sin i (r < 1’’.5), and the hidden nucleus, located 3’’.9 +/- 0’’.5 at the NW (PA 271 +/- 15 deg) of the optical nucleus, would have a mass of 1 x 10^7 M_Sun / sin i (r < 1’’.5). The emission line ratio map also unveils the presence of a second circumnuclear ring structure, previously known by IR imaging (Elmegreen et al. 1998). The data allow us to resolve the behavior of the interstellar medium inside the circumnuclear ring and around the binary mass concentration. | Source: | arXiv, astro-ph/0505264 | 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:
| |