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http://hdl.handle.net/2289/6204
Title: | The Murchison Widefield Array Commissioning Survey: A Low-Frequency Catalogue of 14 110 Compact Radio Sources over 6 100 Square Degrees |
Authors: | Hurley-Walker, N. Deshpande, A.A. Prabu, T. Udaya Shankar, N. Srivani, K.S. Subrahmanyan, Ravi +25 Co-authors |
Keywords: | interferometric Radio continuum |
Issue Date: | 22-Dec-2014 |
Publisher: | Cambridge University Press for Astronomical Society of Australia |
Citation: | Publications of the Astronomical Society of Australia,2014,Vol.31, e045 |
Abstract: | We present the results of an approximately 6 100 deg2 104–196 MHz radio sky survey performed with the Murchison Widefield Array during instrument commissioning between 2012 September and 2012 December: the MWACS. The data were taken as meridian drift scans with two different 32-antenna sub-arrays that were available during the commissioning period. The survey covers approximately 20.5 h < RA < 8.5 h, − 58° < Dec < −14°over three frequency bands centred on 119, 150 and 180 MHz, with image resolutions of 6–3 arcmin. The catalogue has 3 arcmin angular resolution and a typical noise level of 40 mJy beam− 1, with reduced sensitivity near the field boundaries and bright sources. We describe the data reduction strategy, based upon mosaicked snapshots, flux density calibration, and source-finding method. We present a catalogue of flux density and spectral index measurements for 14 110 sources, extracted from the mosaic, 1 247 of which are sub-components of complexes of sources. |
Description: | Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations) |
URI: | http://hdl.handle.net/2289/6204 |
ISSN: | 1323-3580 1448-6083(online) |
Alternative Location: | http://adsabs.harvard.edu/doi/10.1017/pasa.2014.40 http://arxiv.org/abs/1410.0790 http://dx.doi.org/10.1017/pasa.2014.40 |
Copyright: | 2014 Astronomical Society of Japan |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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2014_PASoAst_31_e045.pdf Restricted Access | Restricted Access | 9.28 MB | Adobe PDF | View/Open Request a copy |
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