Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001japa...22...81r&link_type=abstract
Journal of Astrophysics and Astronomy, Volume 22, Issue 1, pp.81-119
Astronomy and Astrophysics
Astrophysics
5
Scientific paper
In a previous paper we presented a low-resolution (2°×2°) survey of radio recombination lines (RRLs) at 327 MHz in the longitude range l=330° to 0° to 89°. In this paper, we present the results of a higher resolution (2°×6') survey of RRLs from seven 2°-wide fields and two 6°-wide fields in the same longitude range. Observations were made using the Ooty Radio Telescope (ORT). A total of 252 spectra that were obtained are presented. RRLs were detected in almost all the individual positions within the fields with l<35° and at several individual positions within the fields in the longitude range l=35° to 85°. Detailed analysis of the data towards the field centered at G45.5+0.0, shows that the line emission consists of discrete zones of ionized gas. The angular extent of these zones are likely to be one degree or more corresponding to a linear size of >110 pc at the kinematic distance.
Anantharamaiah K. R.
Anish Roshi D.
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