Radio recombination line (H92alpha) observations of SGR E

Astronomy and Astrophysics – Astronomy

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Hii Regions, Ism: Individual: Sgr E, Galaxy: Centre, Radio Continuum: Ism, Radio Lines: Ism

Scientific paper

Observations of radio recombination line (H92alpha) and 8.3-GHz continuum emission from several probable thermal sources in the Galactic Centre HII complex Sgr E have been made using the Very Large Array. Line emission has been detected from seven of these sources, confirming their thermal nature and also locating them in a single kinematical entity moving with nu_LSR~=-205 km s^-1. The continuum sources are well resolved by the 8-arcsec beam, and several have complex structure including shells, arcs and cores. One source (G 358.6+0.06) has no significant H92alpha flux, despite its relatively bright continuum and flat spectrum. Further observations will be needed to determine whether or not this interesting source is actually thermal.

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