DSpace
 

RRI Digital Repository >
04. Astronomy and Astrophysics >
Research Papers (A&A) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4424

Title: GMRT observations of interstellar clouds in the 21cm line of atomic hydrogen.
Authors: Mohan, Rekhesh
Dwarakanath, K.S.
Srinivasan, G.
Chengalur, J.N.
Issue Date: Mar-2001
Publisher: Indian Academy of Sciences, Bangalore, India.
Citation: Journal of Astrophysics and Astronomy, 2001, Vol.22, p35
Abstract: Nearby interstellar clouds with high (|v| >/= 10 km/s) random velocities although easily detected in NaI and CaII lines have hitherto not been detected (in emission or absorption) in the HI 21cm line. We describe here deep Giant Metrewave Radio Telescope (GMRT) HI absorption observations toward radio sources with small angular separation from bright O and B stars whose spectra reveal the presence of intervening high random velocity CaII absorbing clouds. In 5 out of the 14 directions searched we detect HI 21cm absorption features from these clouds. The mean optical depth of these detections is ~ 0.09 and FWHM is ~ 10 km/s, consistent with absorption arising from CNM clouds.
Description: Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
URI: http://hdl.handle.net/2289/4424
ISSN: 0250-6335
0973-7758(online)
Alternative Location: http://adsabs.harvard.edu/abs/2001JApA...22...35M
http://arxiv.org/abs/http://arxiv.org/abs/astro-ph/0103278
http://dx.doi.org/ 10.1007/BF02933589
Copyright: 2011 Indian Academy of Sciences, Bangalore, India.
Appears in Collections:Research Papers (A&A)

Files in This Item:

File Description SizeFormat
2001_JApA_V22_p35.pdfRestricted Access1.52 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

    RRI Library DSpace