A VLA SURVEY for FAINT COMPACT RADIO SOURCES in the ORION NEBULA CLUSTER

Patrick D. Sheehan, Josh A. Eisner, Rita K. Mann, Jonathan P. Williams

Research output: Contribution to journalReview article

3 Scopus citations

Abstract

We present Karl G. Jansky Very Large Array 1.3, 3.6, and 6 cm continuum maps of compact radio sources in the Orion Nebular Cluster (ONC). We mosaicked 34 arcmin2 at 1.3 cm, 70 arcmin2 at 3.6 cm and 109 arcmin2 at 6 cm, containing 778 near-infrared detected young stellar objects and 190 Hubble Space Telescope-identified proplyds (with significant overlap between those characterizations). We detected radio emission from 175 compact radio sources in the ONC, including 26 sources that were detected for the first time at these wavelengths. For each detected source, we fitted a simple free-free and dust emission model to characterize the radio emission. We extrapolate the free-free emission spectrum model for each source to ALMA bands to illustrate how these measurements could be used to correctly measure protoplanetary disk dust masses from submillimeter flux measurements. Finally, we compare the fluxes measured in this survey with previously measured fluxes for our targets, as well as four separate epochs of 1.3 cm data, to search for and quantify the variability of our sources.

Original languageEnglish (US)
Article number155
JournalAstrophysical Journal
Volume831
Issue number2
DOIs
StatePublished - Nov 10 2016

Keywords

  • Sun: activity
  • Sun: corona
  • Sun: flares
  • Sun: radio radiation
  • instrumentation: high angular resolution
  • instrumentation: interferometers

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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