RRL observations using ORT at 328 MHz and WSRT at 1.4 GHz from Eldwim

Baddi, Raju R.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5261

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DC Field	Value	Language
dc.contributor.author	Baddi, Raju R.	-
dc.date.accessioned	2012-08-23T12:03:56Z	-
dc.date.available	2012-08-23T12:03:56Z	-
dc.date.issued	2012-02	-
dc.identifier.citation	Astronomical Journal, 2012, Vol.143, p45	en
dc.identifier.issn	0004-625	-
dc.identifier.issn	1538-3881(Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/5261	-
dc.description	Restricted Access.	en
dc.description.abstract	Radio recombination line (RRL or RL for short) observations from 10 Galactic positions using the Ooty Radio Telescope (ORT) at 328 MHz and the Westerbork Synthesis Radio Telescope (WSRT) at 1.4 GHz have been presented. ORT observations were made using a recently augmented New Digital Backend (NDB). NDB offered a bandwidth of 1 MHz that was used to observe H271α RL. The eight intermediate-frequency bands offered by WSRT in the incoherent addition mode were used to detect the seven H/Henα RLs with n = 165-171 and the H208β RL. RL observations common to WSRT and ORT have been put together to model the diffuse low-density ionized gas (extended low density warm ionized medium, ELDWIM). This modeling constrains the electron number density in ELDWIM to 1.0 cm-3 < ne < 10.0 cm-3 for a temperature range of 103-104 K for these 10 positions. An effective stellar temperature of the H II region picture for three positions showing He line detection has been presented using spherical cloud modeling. The lower limits on the stellar temperatures are >33,000 K for the obtained ratios of N He +/N H + toward these directions.	en
dc.language.iso	en	en
dc.publisher	IOP Publishing for the American Astronomical Society	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2012AJ....143...45B	en
dc.relation.uri	http://dx.doi.org/10.1088/0004-6256/143/2/45	en
dc.rights	2012 American Astronomical Society	en
dc.subject	H II regions	en
dc.subject	ISM: abundances	en
dc.subject	radio lines: ISM	en
dc.title	RRL observations using ORT at 328 MHz and WSRT at 1.4 GHz from Eldwim	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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