A 4.8 and 8.6 GHz survey of the small magellanic cloud: The images

John R. Dickel, Robert A. Gruendl, Vincent J. Mcintyre, Shaun W. Amy

Research output: Contribution to journalArticle

Abstract

Detailed 4.8 and 8.6 GHz radio images of the entire Small Magellanic Cloud with half-power beamwidths of 35″ at 4.8 GHz and 22″ at 8.6 GHz have been obtained using the Australia Telescope Compact Array. A total of 3564 mosaic positions were used to cover an area of 4?5 on a side. Full Polarimetrie observations were made. These images have sufficient spatial resolution (∼9 and 6 pc, respectively) and sensitivity (3σ of 1.5 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 arcsec, respectively) and to help estimate sizes of individual sources smaller than the resolution of the full survey. The resultant database will be valuable for statistical studies and comparisons with X-ray, optical and infrared surveys of the Small Magellanic Cloud with similar resolution. The images and calibrated uv data are publicly available in FITS format.

Original languageEnglish (US)
Pages (from-to)1511-1518
Number of pages8
JournalAstronomical Journal
Volume140
Issue number5
DOIs
StatePublished - Nov 1 2010

Keywords

  • Galaxies
  • General - Radio continuum
  • General - Surveys
  • Individual (smc) - Ism

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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