Observations of the giant H II region complex W51 at decameter wavelengths

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3778

Title:	Observations of the giant H II region complex W51 at decameter wavelengths
Authors:	Deshpande, A. A Sastry, Ch. V
Keywords:	H II Regions Radio Sources (Astronomy) Supernova Remnants Decametric Waves Galactic Radiation Nonthermal Radiation Radio Spectroscopy
Issue Date:	May-1986
Publisher:	European Southern Observatory
Citation:	Astronomy and Astrophysics, Vol. 160, No. 1, pp. 129 - 139
Abstract:	Radio continuum absorption observations at 34.5 MHz with a spatial resolution of 34 x 48 arcmin have been obtained for the giant H II region complex W 51 with the decameter-wave radio telescope at Gauribidanur, India (13 deg 36 min N and long 77 deg 27 min E). A mean electron temperature of 9500 + or - 600 K and a background temperature of 28,000 + or - 2600 K have been derived. The proportion of nonthermal emission originating on the near side of W51 corresponds to a mean emissivity of 2 K/pc. The present observations also indicate that the ring towards the east of the nebula (W 51 C) is nonthermal.
URI:	http://hdl.handle.net/2248/3778
ISSN:	0004-6361
Appears in Collections:	IIAP Publications

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