4.6 Article

1.4 GHz HIGH-RESOLUTION FLUX-ACCURATE IMAGES OF SN 1006

Journal

ASTRONOMICAL JOURNAL
Volume 137, Issue 2, Pages 2956-2967

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/0004-6256/137/2/2956

Keywords

ISM: individual (SN1006); radio continuum: ISM; supernova remnants

Funding

  1. National Science Foundation Astronomy
  2. Astrophysics Postdoctoral Fellowship14 [AST 01-03879]
  3. National Academy of Sciences
  4. Office of Naval Research

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We present interferometric+single-dish images, constructed from the Green Bank Telescope (GBT) and VLA observations, of the supernova remnant SN 1006. The image was created using a Multiscale CLEAN algorithm in conjunction with a novel approach for correcting the effect of the non-coplanar baselines. We demonstrate that integrating with a single dish to the confusion limit of the highest resolution interferometric element is not required. Instead, the noise in the map is limited by the signal-to-noise ratio in each observation. The noise in the combined map at the full resolution is dominated by uncertainties in the VLA data, not by uncertainties in our short GBT observation. The resulting image is a significant improvement over images missing short spacing information, and paves the way for future joint GBT+VLA proposals that need to accurately image objects ranging from galaxies to H II regions.

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