Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/852
Title: | A high galactic latitude HI 21cm-line absorption survey using the GMRT: I. observations and spectra |
Authors: | Mohan, Rekhesh Dwarakanath, K.S. Srinivasan, G. |
Keywords: | ISM:clouds kinematics and dynamics Radio lines: ISM |
Issue Date: | 2004 |
Publisher: | Indian Academy of Sciences, Bangalore, India. |
Citation: | Journal of Astrophysics and Astronomy, 2004, Vol. 25, p143-183. |
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. |
URI: | http://hdl.handle.net/2289/852 |
ISSN: | 0250-6335 |
Copyright: | Indian Academy of Sciences, Bangalore, India. |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2004 JAA 25 p143.pdf | 41p. | 1.45 MB | Adobe PDF | View/Open |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.