Radio continuum maps at 22 GHz of the H II regions RCW57 and W49

Details Radio continuum maps at 22 GHz of the H II regions RCW57 and W49 Radio continuum maps at 22 GHz of the H II regions RCW57 and W49

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989stin...9018343p&link_type=abstract

M.S. Thesis Instituto de Pesquisas Espaciais, Sao Jose dos Campos (Brazil). Ministerio da Ciencia e Tecnologia.

Astronomy and Astrophysics

Astronomy

Continuums, Galactic Structure, H Ii Regions, Mapping, Radio Frequencies, Supernova Remnants, Flux Density, Radio Astronomy, Radio Telescopes

Scientific paper

The galactic regions W49 and RCW57 are studied at the radio continuum frequency of 22 GHz, with a half power beam width of the order of 4 minutes, in the Radio Observatorio do Itapetinga. The analysis of the obtained spectra confirmed that the sources G291.0-0.1 and G43.03-0.2 (W49B) are Plerionic type supernova remnants. The strong emission of the H II region G291.6-0.5 occurs next to compact source G291.59-0.5, which presented a low level integrated flux density at 141 MHz. The integrated flux density obtained for the H II region region W49 indicated that, compared to lower frequencies, the contribution of new compact sources is not important at 22 GHz.

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