Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21821601c&link_type=abstract
American Astronomical Society, AAS Meeting #218, #216.01; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
The Expanded Very Large Array (EVLA) is a complete replacement of the 1970's electronics systems of the VLA. This includes 80 times the instantaneous bandwidth, complete frequency coverage from 1 GHz to 50 GHz with state of the art receivers, and vastly increased spectral and temporal capabilities through its new state-of-the-art correlator. The EVLA can be considered a complete reinvention of the VLA, and reestablishes the EVLA as the world's most powerful radio telescope in the 1 GHz to 50 GHz regime for the coming decade. The EVLA has completed its first year of early science using the new correlator and some of the new receiver systems. An ApJ Letters special issue is being devoted to these early science results, and I will present some of the highlights from this issue. The early science results continue the legacy established by the VLA of remarkable breadth of science enabled, ranging from: studies of thermal emission from trans-Neptunian objects, to high resolution, multi-line spectroscopic imaging of protostellar regions, to studies of galactic and extragalactic transients. I will focus in some detail on the impressive capabilities of the EVLA to study low order molecular line emission from high redshift galaxies, and the impact of such observations on our understanding of galaxy formation and the dense gas history of the Universe. I will conclude with a summary of the current status of the project, and the plans for full operations by late 2012.
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