The Allen Telescope Array Pi GHz Sky Survey I. Survey Description and Static Catalog Results for the Bootes Field
| Autor: | Amber Bauermeister, Jack Welch, Peter K. G. Williams, Dave MacMahon, Tom Pierson, John Dreher, Dan Werthimer, Niklas Wadefalk, Karen Randall, Douglas C.-J. Bock, Oren Milgrome, Jill Tarter, R. James Forster, Casey J. Law, Sandy Weinreb, Rob Ackermann, Peter Backus, Peter L. McMahon, Don Backer, Ken Smolek, Dave DeBoer, J. B. Lugten, Chris Cork, John Ross, Billy Barott, Carl Heiles, Melvyn Wright, Matt Fleming, G. R. Harp, Andrew Siemion, Jane Jordan, Shannon Atkinson, Artyom Vitouchkine, Susanne Jorgensen, Garrett K. Keating, Matt Dexter, Geoffrey C. Bower, Ed Fields, Calvin Cheng, Tom Kilsdonk, Joeri van Leeuwen, Greg Engargiola, Colby Gutierrez-Kraybill, Steve Croft, Leo Blitz, Seth Shostak, M. M. Davis, Chat Hull, Tucker Bradford, Tamara T. Helfer, David Whysong, Lynn Urry, Douglas Thornton |
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| Přispěvatelé: | High Energy Astrophys. & Astropart. Phys (API, FNWI) |
| Rok vydání: | 2010 |
| Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) 010504 meteorology & atmospheric sciences media_common.quotation_subject Astronomy Flux FOS: Physical sciences Astronomy and Astrophysics BOOTES 01 natural sciences Wide field Allen Telescope Array 13. Climate action Space and Planetary Science Sky 0103 physical sciences Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics 0105 earth and related environmental sciences Constellation media_common |
| Zdroj: | Astrophysical Journal, 725(2), 1792-1804. IOP Publishing Ltd. |
| ISSN: | 0004-637X |
| DOI: | 10.48550/arxiv.1009.4443 |
| Popis: | The Pi GHz Sky Survey (PiGSS) is a key project of the Allen Telescope Array. PiGSS is a 3.1 GHz survey of radio continuum emission in the extragalactic sky with an emphasis on synoptic observations that measure the static and time-variable properties of the sky. During the 2.5-year campaign, PiGSS will twice observe ~250,000 radio sources in the 10,000 deg^2 region of the sky with b > 30 deg to an rms sensitivity of ~1 mJy. Additionally, sub-regions of the sky will be observed multiple times to characterize variability on time scales of days to years. We present here observations of a 10 deg^2 region in the Bootes constellation overlapping the NOAO Deep Wide Field Survey field. The PiGSS image was constructed from 75 daily observations distributed over a 4-month period and has an rms flux density between 200 and 250 microJy. This represents a deeper image by a factor of 4 to 8 than we will achieve over the entire 10,000 deg^2. We provide flux densities, source sizes, and spectral indices for the 425 sources detected in the image. We identify ~100$ new flat spectrum radio sources; we project that when completed PiGSS will identify 10^4 flat spectrum sources. We identify one source that is a possible transient radio source. This survey provides new limits on faint radio transients and variables with characteristic durations of months. Accepted for publication in ApJ; revision submitted with extraneous figure removed |
| Databáze: | OpenAIRE |
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