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The Gould’s Belt Very Large Array Survey. V. The Perseus Region

Pech, Gerardo and Loinard, Laurent and Dzib, Sergio A. and Mioduszewski, Amy J. and Rodríguez, Luis F. and Ortiz-Leόn, Gisela N. and Rivera, Juana L. and Torres, Rosa M. and Boden, Andrew F. and Hartmann, Lee and Kounkel, Marina A. and Evans, Neal J., II and Briceño, Cesar and Tobin, John and Zapata, Luis A. (2016) The Gould’s Belt Very Large Array Survey. V. The Perseus Region. Astrophysical Journal, 818 (2). Art. No. 116. ISSN 0004-637X. doi:10.3847/0004-637X/818/2/116.

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We present multiepoch, large-scale (~2000 arcmin^2), fairly deep (~16 μJy), high-resolution (~1") radio observations of the Perseus star-forming complex obtained with the Karl G. Jansky Very Large Array at frequencies of 4.5 and 7.5 GHz. These observations were mainly focused on the clouds NGC 1333 and IC 348, although we also observed several fields in other parts of the Perseus complex. We detect a total of 206 sources, 42 of which are associated with young stellar objects (YSOs). The radio properties of about 60% of the YSOs are compatible with a nonthermal radio emission origin. Based on our sample, we find a fairly clear relation between the prevalence of nonthermal radio emission and evolutionary status of the YSOs. By comparing our results with previously reported X-ray observations, we show that YSOs in Perseus follow a Güdel–Benz relation with κ = 0.03, consistent with other regions of star formation. We argue that most of the sources detected in our observations but not associated with known YSOs are extragalactic, but provide a list of 20 unidentified radio sources whose radio properties are consistent with being YSO candidates. Finally, we also detect five sources with extended emission features that can clearly be associated with radio galaxies.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Loinard, Laurent0000-0002-5635-3345
Dzib, Sergio A.0000-0001-6010-6200
Rodríguez, Luis F.0000-0003-2737-5681
Rivera, Juana L.0000-0002-7631-2620
Hartmann, Lee0000-0003-1430-8519
Kounkel, Marina A.0000-0002-5365-1267
Evans, Neal J., II0000-0001-5175-1777
Briceño, Cesar0000-0001-7124-4094
Tobin, John0000-0002-6195-0152
Additional Information:© 2016. The American Astronomical Society. Received 2015 July 15; accepted 2015 November 23; published 2016 February 12. G.P., L.L., L.F.R., G.N.O., J.L.R., and L.A.Z. acknowledge the financial support of DGAPA, UNAM, and CONACyT, México. The National Radio Astronomy Observatory is operated by Associated Universities, Inc., under cooperative agreement with the National Science Foundation. CASA is developed by an international consortium of scientists based at the National Radio Astronomical Observatory (NRAO), the European Southern Observatory (ESO), the National Astronomical Observatory of Japan (NAOJ), the CSIRO Australia Telescope National Facility (CSIRO/ATNF), and the Netherlands Institute for Radio Astronomy (ASTRON) under the guidance of NRAO. This research has made use of the SIMBAD database and VizieR Catalog Service, operated at CDS, Strasbourg, France.
Funding AgencyGrant Number
Universidad Nacional Autónoma de México (UNAM)UNSPECIFIED
Consejo Nacional de Ciencia y Tecnología (CONACYT)UNSPECIFIED
Subject Keywords:radiation mechanisms: nonthermal; radiation mechanisms: thermal; radio continuum: stars; techniques: interferometric
Issue or Number:2
Record Number:CaltechAUTHORS:20160419-073955644
Persistent URL:
Official Citation:Gerardo Pech et al 2016 ApJ 818 116
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66268
Deposited By: Ruth Sustaita
Deposited On:19 Apr 2016 18:12
Last Modified:10 Nov 2021 23:55

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