2004/03/31 by J. M. Wrobel, M. A. Garrett, J. J. Condon +1 · 9 citations
Physics and Astronomy · #Astrometry #Astronomy and Astrophysical Research #Astrophysics and Cosmic Phenomena #Flux (metallurgy) #RADIUS #Radio Astronomy Observations and Technology #Radio astronomy #Reference frame #Very Long Baseline Array #Very-long-baseline interferometry #astro-ph
paper · pdf · doi:10.1086/421743
published in The Astronomical Journal 128(1), 103-108 (Institute of Physics) · 11 pages, 3 figures. To appear in the 2004 July issue of the Astronomical Journal
arxiv created 2004/03/31 · openalex publication_date 2004/07/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The NRAO Very Long Baseline Array (VLBA) was used at 1.4 GHz to image 20 compact sources in the inner 1° 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 σ 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.