|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Discovery of a high-redshift Einstein ring | | R. A. Cabanac
; D. Valls-Gabaud
; A. O. Jaunsen
; C. Lidman
; H. Jerjen
; | | Date: |
27 Apr 2005 | | Journal: | Astron.Astrophys. 436 (2005) L21-L25 DOI: 10.1051/0004-6361:200500115 | | Subject: | astro-ph | | Affiliation: | 1, 2 and 3), D. Valls-Gabaud (3 and 4), A. O. Jaunsen , C. Lidman , H. Jerjen ( PUC ESO Chile CFHT OMP Toulouse Mt-Stromlo | | Abstract: | We report the discovery of a partial Einstein ring of radius 1.48arcsec produced by a massive (and seemingly isolated) elliptical galaxy. The spectroscopic follow-up at the VLT reveals a 2L* galaxy at z=0.986, which is lensing a post-starburst galaxy at z=3.773. This unique configuration yields a very precise measure of the mass of the lens within the Einstein radius, (8.3e11 +- 0.4)/h70 Msolar. The fundamental plane relation indicates an evolution rate of d [log (M/L)B] / dz = -0.57+-0.04, similar to other massive ellipticals at this redshift. The source galaxy shows strong interstellar absorption lines indicative of large gas-phase metallicities, with fading stellar populations after a burst. Higher resolution spectra and imaging will allow the detailed study of an unbiased representative of the galaxy population when the universe was just 12% of its current age. | | Source: | arXiv, astro-ph/0504585 | | 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