|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Kim 3: an Ultra-faint Star Cluster in the Constellation of Centaurus | | Dongwon Kim
; Helmut Jerjen
; Dougal Mackey
; Gary S Da Costa
; Antonino P Milone
; | | Date: |
11 Dec 2015 | | Abstract: | We report the discovery of an ultra-faint star cluster in the constellation
of Centaurus. This new stellar system, Kim 3, features a half light radius of
$r_{h}=2.29^{+1.28}_{-0.52}$ pc and a total luminosity of $M_{V}=+0.7pm0.3$.
Approximately 26 stars are identified as candidate member stars down to four
magnitudes below the main-sequence turn-off, which makes Kim 3 the least
luminous star cluster known to date. The compact physical size and extreme low
luminosity place it close to faint star clusters in the size-luminosity plane.
The stellar population of Kim 3 appears to be relatively young
($9.5^{+3.0}_{-1.7}$ Gyr) and metal-poor ([Fe/H]$=-1.6^{+0.45}_{-0.30}$) at a
heliocentric distance of $15.14^{+1.00}_{-0.28}$ kpc. The cluster lacks a
well-defined center and a small but prominent group of stars consistent with
the Kim 3 isochrone is present approximately 9.7 pc in projection south of the
cluster center. Both are signs of the cluster being in the final stage of tidal
disruption. | | Source: | arXiv, 1512.3530 | | 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