The Gould's Belt Very Large Array Survey. II. The Serpens Region

Date
2015-05
Authors
Ortiz-Leon, Gisela N.
Loinard, Laurent
Mioduszewski, Amy J.
Dzib, Sergio A.
Rodriguez, Luis F.
Pech, Gerardo
Rivera, Juana L.
Torres, Rosa M.
Boden, Andrew F.
Hartmann, Lee
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Abstract

We present deep (similar to 17 mu Jy) radio continuum observations of the Serpens molecular cloud, the Serpens south cluster, and the W40 region obtained using the Very Large Array in its A configuration. We detect a total of 146 sources, 29 of which are young stellar objects (YSOs), 2 of which are BV stars, and 5 more of which are associated with phenomena related to YSOs. Based on their radio variability and spectral index, we propose that about 16 of the remaining 110 unclassified sources are also YSOs. For approximately 65% of the known YSOs detected here as radio sources, the emission is most likely non-thermal and related to stellar coronal activity. As also recently observed in Ophiuchus, our sample of YSOs with X-ray counterparts lies below the fiducial Gudel & Benz relation. Finally, we analyze the proper motions of nine sources in the W40 region. This allows us to better constrain the membership of the radio sources in the region.

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Citation
Ortiz-Le�n, Gisela N., Laurent Loinard, Amy J. Mioduszewski, Sergio A. Dzib, Luis F. Rodr�guez, Gerardo Pech, Juana L. Rivera et al. "The Gould's Belt Very Large Array Survey. II. The Serpens Region." The Astrophysical Journal, Vol. 805, No. 1 (May., 2015): 9.