Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 1K004

Radio continuum observations of the Serpens and W40 star-forming regions

Ortiz-Leon, Gisela N. (Centro de Radioastronomia y Astrofisica, UNAM)
Loinard, Laurent (Centro de Radioastronomia y Astrofisica, UNAM)
Mioduszewski, Amy J. (National Radio Astronomy Observatory)
Rodriguez, Luis Felipe (Centro de Radioastronomia y Astrofisica, UNAM)
Dzib, Sergio A. (Centro de Radioastronomia y Astrofisica, UNAM)
Pech, Gerardo (Centro de Radioastronomia y Astrofisica, UNAM)
Rivera, Juana L. (Centro de Radioastronomia y Astrofisica, UNAM)
Torres, Rosa M. (Argelander Institute for Astronomy, University of Bonn)
Boden, Andrew F. (Division of Physics, Math and Astronomy, California Institute of Technology)
Hartmann, Lee (Department of Astronomy, University of Michigan)
Evans II, Neal J. (Department of Astronomy, The University of Texas at Austin)
Briceņo, Cesar (Centro de Investigaciones de Astronomia, Merida, Venezuela)

We present new sensitive and high angular resolution radio observations of the Serpens molecular cloud, the Serpens South cluster and the W40 region obtained with the Karl G. Jansky Very Large Array (VLA). In total, our observations cover an area of ~1600 square arcminutes. We detected 92 sources in the Serpens molecular cloud, 41 in the W40 region and 8 in the Serpens South cluster. Out of 141 VLA sources, only 33 had previously been detected at radio wavelengths, while the other 108 are new radio detections. 23 sources are associated with young stellar objects (YSOs), while 1 object is classified as a B7V star. Approximately 70% of these YSOs are non-thermal radio sources, being the emission probably powered by the gyrosynchrotron mechanism. We found also that the radio emission from younger YSOs seems to be less variable than the radio emission from their more evolved counterparts. This points that the radio emission originates from different mechanisms as the YSOs evolve.

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