A high galactic latitude HI 21cm-line absorption survey using the GMRT: I. observations and spectra
| dc.contributor.author | Mohan, Rekhesh | |
| dc.contributor.author | Dwarakanath, K S | |
| dc.contributor.author | Srinivasan, G | |
| dc.date.accessioned | 2005-12-26T08:36:12Z | |
| dc.date.available | 2005-12-26T08:36:12Z | |
| dc.date.issued | 2004 | |
| dc.description.abstract | We have used the Giant Meterwave Radio Telescope (GMRT) to measure the Galactic HI 21-cm line absorption towards 102 extragalactic radio continuum sources, located at high (|b| > 15?) Galactic latitudes. The Declination coverage of the present survey is δ - 45?.With a mean rms optical depth of ? 0.003, this is the most sensitive Galactic HI 21- cm line absorption survey to date. To supplement the absorption data, we have extracted the HI 21-cm line emission profiles towards these 102 lines of sight from the Leiden Dwingeloo Survey of Galactic neutral hydrogen. We have carried out a Gaussian fitting analysis to identify the discrete absorption and emission components in these profiles. In this paper, we present the spectra and the components. A subsequent paper will discuss the interpretation of these results. | en |
| dc.format.extent | 1485288 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Journal of Astrophysics and Astronomy, 2004, Vol. 25, p143-183. | en |
| dc.identifier.issn | 0250-6335 | |
| dc.identifier.uri | http://hdl.handle.net/2289/852 | |
| 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 | ISM:clouds | en |
| dc.subject | kinematics and dynamics | en |
| dc.subject | Radio lines: ISM | en |
| dc.title | A high galactic latitude HI 21cm-line absorption survey using the GMRT: I. observations and spectra | en |
| dc.type | Article | en |