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J/ApJ/801/91 Gould's Belt Very Large Array survey. IV. Taurus (Dzib+, 2015)
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Beginning of ReadMe :J/ApJ/801/91 Gould's Belt Very Large Array survey. IV. Taurus (Dzib+, 2015)
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The Gould's Belt Very Large Array survey.
IV. The Taurus-Auriga complex.
Dzib S.A., Loinard L., Rodriguez L.F., Mioduszewski A.J., Ortiz-Leon G.N.,
Kounkel M.A., Pech G., Rivera J.L., Torres R.M., Boden A.F., Hartmann L.,
Evans II N.J., Briceno C., Tobin J.
<Astrophys. J., 801, 91 (2015)>
=2015ApJ...801...91D
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ADC_Keywords: Radio continuum ; YSOs ; Molecular clouds ;
Cross identifications ; Surveys
Keywords: radio continuum: stars; radiation mechanisms: non-thermal;
radiation mechanisms: thermal; techniques: interferometric
Abstract:
We present a multi-epoch radio study of the Taurus-Auriga star-forming
complex made with the Karl G. Jansky Very Large Array at frequencies
of 4.5GHz and 7.5GHz. We detect a total of 610 sources, 59 of which
are related to young stellar objects (YSOs) and 18 to field stars. The
properties of 56% of the young stars are compatible with non-thermal
radio emission. We also show that the radio emission of more evolved
YSOs tends to be more non-thermal in origin and, in general, that
their radio properties are compatible with those found in other
star-forming regions. By comparing our results with previously
reported X-ray observations, we notice that YSOs in Taurus-Auriga
follow a Gudel-Benz relation with kappa=0.03, as we previously
suggested for other regions of star formation. In general, YSOs in
Taurus-Auriga and in all the previous studied regions seem to follow
this relation with a dispersion of 1dex. Finally, we propose that
most of the remaining sources are related with extragalactic objects
but provide a list of 46 unidentified radio sources whose radio
properties are compatible with a YSO nature.
Description:
The observations were obtained with the Karl G. Jansky VLA of the
National Radio Astronomy Observatory (NRAO). Two frequency sub-bands,
each 1GHz wide, and centered at 4.5 and 7.5GHz, respectively, were
recorded simultaneously. The observations were obtained on three
different time periods (February 25/26/28 to March 6; April
12/17/20/25, and April 30 to May 1/5/14/22 in 2011) typically
separated from one another by a month.