Compact Radio Sources in Regions of Massive Star Formation

 

Luis Rodriguez (CRyA/UNAM, Mexico)

 

The extended radio continuum emission from regions of massive star formation is usually dominated by free-free emission from the associated HII region. However, when observed with a high angular resolution interferometer, the extended emission can be filtered out and a variety of compact objects can be detected and studied. These compact object include hypercompact HII regions (free-free emission), low-mass young stars with magnetospheric activity (gyrosynchrotron emission) and the wind-wind collision interface of massive binary systems (synchrotron emission). We will discuss how these regions can be studied and characterized and what can be learned from them. In particular, there are two new types of compact radio objects whose nature is not clear yet and may be revealing new phenomena.