| | |
| | |
Stat |
Members: 3645 Articles: 2'501'711 Articles rated: 2609
20 April 2024 |
|
| | | |
|
Article overview
| |
|
The Gaseous Trail of the Sagittarius Dwarf Galaxy | M.E. Putman
; C. Thom
; B.K. Gibson
; L. Staveley-Smith
; | Date: |
22 Dec 2003 | Journal: | Astrophys.J. 603 (2004) L77-L80 | Subject: | astro-ph | Affiliation: | U. Colorado), C. Thom (Swinburne), B.K. Gibson (Swinburne), L. Staveley-Smith (ATNF | Abstract: | A possible gaseous component to the stream of debris from the Sagittarius dwarf galaxy is presented. We identify 4 - 10 x 10^6 Msun of neutral hydrogen along the orbit of the Sgr dwarf in the direction of the Galactic anticenter (at 36 kpc, the distance to the stellar debris in this region). This is 1-2% of the estimated total mass of the Sgr dwarf. Both the stellar and gaseous components have negative velocities, but the gaseous component extends to higher negative velocities. If associated, this gaseous stream was most likely stripped from the main body of the dwarf 0.2 - 0.3 Gyr ago during its current orbit after a passage through a diffuse edge of the Galactic disk with a density > 10^{-4} cm^{-3}. This gas represents the dwarf’s last source of star formation fuel and explains how the galaxy was forming stars 0.5-2 Gyr ago. | Source: | arXiv, astro-ph/0401477 | 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:
| |