The Gould's Belt Very Large Array Survey. III. The Orion Region




Kounkel, Marina
Hartmann, Lee
Loinard, Laurent
Mioduszewski, Amy J.
Dzib, Sergio A.
Ortiz-Leon, Gisela N.
Rodriguez, Luis F.
Pech, Gerardo
Rivera, Juana L.
Torres, Rosa M.

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We present results from a high-sensitivity (60 mu Jy), large-scale (2.26 deg(2)) survey obtained with the Karl G. Jansky Very Large Array as part of the Gould's Belt Survey program. We detected 374 and 354 sources at 4.5 and 7.5 GHz, respectively. Of these, 148 are associated with previously known young stellar objects (YSOs). Another 86 sources previously unclassified at either optical or infrared wavelengths exhibit radio properties that are consistent with those of young stars. The overall properties of our sources at radio wavelengths such as their variability and radio to X-ray luminosity relation are consistent with previous results from the Gould's Belt Survey. Our detections provide target lists for follow-up Very Long Baseline Array radio observations to determine their distances as YSOs are located in regions of high nebulosity and extinction, making it difficult to measure optical parallaxes.



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Kounkel, Marina, Lee Hartmann, Laurent Loinard, Amy J. Mioduszewski, Sergio A. Dzib, Gisela N. Ortiz-Le�n, Luis F. Rodr�guez et al. "The Gould's Belt Very Large Array Survey. III. The Orion region." The Astrophysical Journal, Vol. 790, No. 1 (Jul., 2014): 49.