A 4.8 and 8.6 GHz survey of the large magellanic cloud. I. The images

John R. Dickel, Vincent J. Mcintyre, Robert A. Gruendl, Douglas K. Milne

Research output: Contribution to journalArticlepeer-review

Abstract

Detailed 4.8 and 8.6 GHz radio images of the entire Large Magellanic Cloud with half-power beamwidths of 33'' at 4.8 GHz and 20'' at 8.6 GHz have been obtained using the Australia Telescope Compact Array. A total of 7085 mosaic positions were used to cover an area of 6 on a side. Full polarimetric observations were made. These images have sufficient spatial resolution (∼8 and 5 pc, respectively) and sensitivity (3 σ of 1 mJy beam -1) to identify most of the individual supernova remnants and H II regions and also, in combination with available data from the Parkes 64 m telescope, the structure of the smooth emission in that galaxy. In addition, limited data using the sixth antenna at 4.5-6 km baselines are available to distinguish bright point sources (<3'' and 2'', respectively) and to help estimate sizes of individual sources smaller than the resolution of the full survey. The resulting database will be valuable for statistical studies and comparisons with X-ray, optical, and infrared surveys of the LMC with similar resolution.

Original languageEnglish (US)
Pages (from-to)790-804
Number of pages15
JournalAstronomical Journal
Volume129
Issue number2
DOIs
StatePublished - Feb 2005

Keywords

  • Galaxies: individual (Large Magellanic Cloud)
  • ISM: general
  • Radio continuum: general
  • Surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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