|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The Arecibo Galaxy Environment Survey IX: The Isolated Galaxy Sample | | R. F. Minchin
; R. Auld
; J. I. Davies
; I. D. Karachentsev
; O. C. Keenan
; E. Momjian
; R. Rodriguez
; T. Taber
; R. Taylor
; | | Date: |
29 Oct 2015 | | Abstract: | We have used the Arecibo L-band Feed Array to map three regions, each of 5
square degrees, around the isolated galaxies NGC 1156, UGC 2082, and NGC 5523.
In the vicinity of these galaxies we have detected two dwarf companions: one
near UGC 2082, previously discovered by ALFALFA, and one near NGC 1156,
discovered by this project and reported in an earlier paper. This is
significantly fewer than the 15.4 $^{+1.7}_{-1.5}$ that would be expected from
the field HI mass function from ALFALFA or the 8.9 $pm$ 1.2 expected if the HI
mass function from the Local Group applied in these regions. The number of
dwarf companions detected is, however, consistent with a flat or declining HI
mass function as seen by a previous, shallower, HI search for companions to
isolated galaxies.We attribute this difference in Hi mass functions to the
different environments in which they are measured. This agrees with the general
observation that lower ratios of dwarf to giant galaxies are found in lower
density environments. | | Source: | arXiv, 1510.8715 | | 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:
| |
REGISTER