Fernández, Ximena and Van Gorkom, J. H. and Hess, Kelley M. and Pisano, D. J. and Kreckel, Kathryn and Momjian, Emmanuel and Popping, Attila and Oosterloo, Tom and Chomiuk, Laura and Verheijen, M. A. W. and Henning, Patricia A. and Schiminovich, David and Bershady, Matthew A. and Wilcots, Eric M. and Scoville, N. (2013) A Pilot for a Very Large Array H I Deep Field. Astrophysical Journal Letters, 770 (2). Art. No. L29. ISSN 2041-8205. http://resolver.caltech.edu/CaltechAUTHORS:20130812-090420703
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High-resolution 21 cm H I deep fields provide spatially and kinematically resolved images of neutral hydrogen at different redshifts, which are key to understanding galaxy evolution across cosmic time and testing predictions of cosmological simulations. Here we present results from a pilot for an H I deep field done with the Karl G. Jansky Very Large Array (VLA). We take advantage of the newly expanded capabilities of the telescope to probe the redshift interval 0 < z < 0.193 in one observation. We observe the COSMOS field for 50 hr, which contains 413 galaxies with optical spectroscopic redshifts in the imaged field of 34' × 34' and the observed redshift interval. We have detected neutral hydrogen gas in 33 galaxies in different environments spanning the probed redshift range, including three without a previously known spectroscopic redshift. The detections have a range of H I and stellar masses, indicating the diversity of galaxies we are probing. We discuss the observations, data reduction, results, and highlight interesting detections. We find that the VLA's B-array is the ideal configuration for H I deep fields since its long spacings mitigate radio frequency interference. This pilot shows that the VLA is ready to carry out such a survey, and serves as a test for future H I deep fields planned with other Square Kilometer Array pathfinders.
|Alternate Title:||A Pilot for a VLA HI Deep Field|
|Additional Information:||© 2013 American Astronomical Society. Received 2013 March 11; accepted 2013 May 5; published 2013 June 3. We thank ASTRON for hosting us for two very successful busy weeks. This work was in part supported by the National Science Foundation under grant No. 1009476 to Columbia University. This work is partly based on observations made with the NASA Galaxy Evolution Explorer (GALEX) and SDSS. GALEX is operated for NASA by the California Institute of Technology under NASA contract NAS5-98034. The Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. The full acknowledgement can be found here: http://www.sdss3.org/.|
|Subject Keywords:||galaxies: evolution; radio lines: galaxies|
|Official Citation:||A Pilot for a Very Large Array H I Deep Field Ximena Fernández, J. H. van Gorkom, Kelley M. Hess, D. J. Pisano, Kathryn Kreckel, Emmanuel Momjian, Attila Popping, Tom Oosterloo, Laura Chomiuk, M. A. W. Verheijen, Patricia A. Henning, David Schiminovich, Matthew A. Bershady, Eric M. Wilcots, and Nick Scoville doi:10.1088/2041-8205/770/2/L29|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||12 Aug 2013 16:40|
|Last Modified:||08 Jul 2015 19:57|
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