Roy Choudhury, T. ; Padmanabhan, T. (2002) A simple analytical model for the abundance of damped Lyα absorbers The Astrophysical Journal, 574 (1). pp. 59-64. ISSN 0004-637X
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Official URL: http://iopscience.iop.org/0004-637X/574/1/59/
Related URL: http://dx.doi.org/10.1086/340927
Abstract
A simple analytical model for estimating the fraction (Ωgas) of matter in gaseous form within the collapsed dark matter (DM) halos is presented. The model is developed using (1) the Press-Schechter formalism to estimate the fraction of baryons in DM halos and (2) the observational estimates of the star formation rate at different redshifts. The prediction for Ωgas from the model is in broad agreement with the observed abundance of the damped Lyα systems. Furthermore, it can be used for estimating the circular velocities of the collapsed halos at different redshifts, which could be compared with future observations.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to University of Chicago Press. |
| ID Code: | 73529 |
| Deposited On: | 09 Dec 2011 05:26 |
| Last Modified: | 09 Dec 2011 05:26 |
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