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DC Field | Value | Language |
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dc.contributor.author | Dwarakanath, K.S. | - |
dc.date.accessioned | 2006-06-12T10:17:36Z | - |
dc.date.available | 2006-06-12T10:17:36Z | - |
dc.date.issued | 2004-09 | - |
dc.identifier.citation | Bulletin of the Astronomical Society of India, 2004, Vol.32, p215-221 | en |
dc.identifier.issn | 0304-9523 | - |
dc.identifier.uri | http://hdl.handle.net/2289/1354 | - |
dc.description.abstract | A high latitude HI 21 cm-line absorption survey towards extragalactic sources was recently completed using the Giant Meterwave Radio Telescope (GMRT). A total of 104 sources with |b|>15o and with a 21 cm ¤ux density greater than 1 Jy were observed for ~120 hours. With an optical depth detection limit of ~ 0.01 this is the most sensitive high-latitude survey as yet. Most of the detected HI 21 cm-line absorption features belong to a population with a velocity dispersion of ~7.6 km s-1. These are the standard HI clouds and have been well-studied for decades. However, we also detect a second population of absorbing clouds with a velocity dispersion of ~ 21 km s-1. About 20% of the total population of absorbing clouds belong to this population. This new population of fast clouds can be identified with a similar velocity dispersion Ca II absorbing clouds and with the Halo clouds recently detected in HI emission from Green Bank. | en |
dc.format.extent | 137115 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | The Astronomical Society of India | en |
dc.relation.uri | http://adsabs.harvard.edu/cgi-bin/bib_query?2004BASI...32..215D | en |
dc.rights | (2004) by the Astronomical Society of India. | en |
dc.subject | ISM: clouds | en |
dc.subject | kinematics and dynamics Radio lines | en |
dc.subject | ISM | en |
dc.title | Kinematics of diffuse interstellar clouds: recent GMRT results | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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2004 BASI V32 p215.pdf | 7p. | 133.9 kB | Adobe PDF | View/Open |
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