Kanekar, N. ; Chengalur, J. N. (2005) The strange case of a sub-DLA with very little HI Astronomy & Astrophysics, 429 (3). L51-L54. ISSN 0004-6361
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Official URL: http://www.aanda.org/index.php?option=com_article&...
Related URL: http://dx.doi.org/10.1051/0004-6361:200400111
Abstract
We report a deep search for HI 21cm emission from the z= 0.00632 sub-DLA toward PG1216+069 with the Giant Metrewave Radio Telescope. No emission was detected and our 5σ upper limit on the mass of any associated galaxy is MHI ≲ 107 M⊙ , nearly 3 orders of magnitude less than MHI*. The z ~ 0.006 absorber is thus the most extreme known deviation from the standard paradigm in which high column density quasar absorption lines arise in the disks of gas-rich galaxies.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to EDP Sciences. |
| Keywords: | Galaxies: Evolution; Galaxies: Formation; Galaxies: ISM; Cosmology: Observations; Radio Lines: Galaxies |
| ID Code: | 63576 |
| Deposited On: | 29 Sep 2011 04:07 |
| Last Modified: | 29 Sep 2011 04:07 |
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