| | |
| | |
Stat |
Members: 3645 Articles: 2'504'585 Articles rated: 2609
24 April 2024 |
|
| | | |
|
Article overview
| |
|
Dust Spirals and Acoustic Noise in the Nucleus of the Galaxy NGC 2207 | B. G. Elmegreen
; D. M. Elmegreen
; E. Brinks
; C. Yuan
; M. Kaufman
; M. Klaric
; L. Montenegro
; C. Struck
; M. Thomasson
; | Date: |
3 Jul 1998 | Subject: | astro-ph | Affiliation: | 4,5), M. Kaufman, M. Klaric, L. Montenegro , C. Struck, M. Thomasson ( IBM Watson, NY Vassar College, NY Univ. de Guanajuato, Mexico Academia Sinica, Taiwan CCNY, NY Ohio State Univ., Columbus Midlands Technical College, Columbia SC Iowa State | Abstract: | Observations with the Hubble Space Telescope reveal an irregular network of dust spiral arms in the nuclear region of the interacting disk galaxy NGC 2207. The spirals extend from ~50 pc to ~300 pc in galactocentric radius, with a projected width of ~20 pc. Radiative transfer calculations determine the gas properties of the spirals and the inner disk, and imply a factor of ~4 local gas compression in the spirals. The gas is not strongly self-gravitating, nor is there a nuclear bar, so the spirals could not have formed by the usual mechanisms applied to main galaxy disks. Instead, they may result from acoustic instabilities that amplify at small galactic radii. Such instabilities may promote gas accretion into the nucleus. | Source: | arXiv, astro-ph/9807037 | 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:
| |