VLBA Astrometry of Compact Radio Sources in the Spitzer First-Look Survey

Details VLBA Astrometry of Compact Radio Sources in the Spitzer First-Look Survey VLBA Astrometry of Compact Radio Sources in the Spitzer First-Look Survey

2004-03-31

arxiv.org/abs/astro-ph/0404007v1

Astronomy and Astrophysics

Astrophysics

11 pages, 3 figures. To appear in the 2004 July issue of the Astronomical Journal

Scientific paper

10.1086/421743

The NRAO Very Long Baseline Array (VLBA) was used at 1.4 GHz to image 20 compact sources in the inner 1-degree radius of the Spitzer VLA First-Look Survey. Twelve sources were detected with the VLBA, with peak flux densities above 2 mJy at 9-mas resolution. The positions of these VLBA detections have been measured in the International Celestial Reference Frame (ICRF) to 1-sigma accuracies of 8 mas East-West and 4 mas North-South. These positions can help anchor ancillary data for the First-Look Survey to the ICRF and are being reported quickly to the community.

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