GMRT detection of HI 21 cm-line absorption from the peculiar galaxy in Abell 2125.
| dc.contributor.author | Dwarakanath, K S | |
| dc.contributor.author | Owen, F N | |
| dc.date.accessioned | 2005-12-15T08:28:13Z | |
| dc.date.available | 2005-12-15T08:28:13Z | |
| dc.date.issued | 2001 | |
| dc.description.abstract | Using the recently completed Giant Meterwave Radio Telescope, we have detected the HI 21 cm-line absorption from the peculiar galaxy C153 in the galaxy cluster Abell 2125. The HI absorption is at a redshift of 0.2533, with a peak optical depth of 0.36. The full width at half minimum of the absorption line is 100 km/s. The estimated column density of atomic Hydrogen is 0.7e22(Ts/100K) per sq. cm. The HI absorption is redshifted by ~ 400 km/s compared to the [OIII] emission line from this system. We attribute this to an in-falling cold gas, or to an out-flowing ionised gas, or to a combination of both as a consequence of tidal interactions of C153 with either a cluster galaxy or the cluster potential. | en |
| dc.format.extent | 442250 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Journal of Astrophysics and Astronomy, 2001, Vol.22, p1-8. | en |
| dc.identifier.issn | 0250-6335 | |
| dc.identifier.uri | http://hdl.handle.net/2289/723 | |
| dc.language.iso | en | en |
| dc.publisher | Indian Academy of Sciences, Bangalore, India. | en |
| dc.rights | Indian Academy of Sciences, Bangalore, India. | en |
| dc.subject | Galaxies; | en |
| dc.subject | Individual (A2 125); | en |
| dc.subject | Active - galaxies; | en |
| dc.subject | Clusters; | en |
| dc.subject | Star-burst; | en |
| dc.subject | Radio lines; | en |
| dc.title | GMRT detection of HI 21 cm-line absorption from the peculiar galaxy in Abell 2125. | en |
| dc.type | Article | en |