Varshalovich, D. A. ; Ivanchik, A. V. ; Petitjean, P. ; Srianand, R. ; Ledoux, C. (2001) HD molecular lines in an absorption system at redshift Z = 2.3377 Astronomy Letters, 27 (11). pp. 683-685. ISSN 1063-7737
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Official URL: http://www.springerlink.com/content/y6723ul8753100...
Related URL: http://dx.doi.org/10.1134/1.1415856
Abstract
Having analyzed the spectrum of the quasar PKS 1232+0.82 taken by Petitjean et al. (2000), we identified HD molecular lines in an absorption system at redshift z=2.3377. We estimated the column density of HD molecules in this system, N(HD) = (1-4) × 1014cm-2. The excitation temperature of the first rotational level J=1 relative to the ground state J=0 is Tex =70 ± 7 Κ. As far as we know, this is the first detection of HD molecules at high redshift.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Springer. |
| Keywords: | Quasar Spectra; Observational Cosmology |
| ID Code: | 55103 |
| Deposited On: | 18 Aug 2011 07:51 |
| Last Modified: | 18 Aug 2011 07:51 |
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