High galactic latitude HI absorption survey (Mohan+, 2004)

Details High galactic latitude HI absorption survey (Mohan+, 2004) High galactic latitude HI absorption survey (Mohan+, 2004)

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ycatp027002501m&link_type=abstract

VizieR On-line Data Catalog: J/other/JApA/25.143. Originally published in: 2004JApA...25..143M

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Interstellar Medium, H I Data, Radio Sources

Scientific paper

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{deg}) Galactic latitudes. The Declination coverage of the present survey is DE~-45{deg}. 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.
(2 data files).

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