Hurley-Walker, Natasha ; Morgan, John ; Wayth, Randall B. ; Hancock, Paul J. ; Bell, Martin E. ; Bernardi, Gianni ; Bhat, Ramesh ; Briggs, Frank ; Deshpande, Avinash A. ; Ewall-Wice, Aaron ; Feng, Lu ; Hazelton, Bryna J. ; Hindson, Luke ; Jacobs, Daniel C. ; Kaplan, David L. ; Kudryavtseva, Nadia ; Lenc, Emil ; McKinley, Benjamin ; Mitchell, Daniel ; Pindor, Bart ; Procopio, Pietro ; Oberoi, Divya ; Offringa, André ; Ord, Stephen ; Riding, Jennifer ; Bowman, Judd D. ; Cappallo, Roger ; Corey, Brian ; Emrich, David ; Gaensler, B. M. ; Goeke, Robert ; Greenhill, Lincoln ; Hewitt, Jacqueline ; Johnston-Hollitt, Melanie ; Kasper, Justin ; Kratzenberg, Eric ; Lonsdale, Colin ; Lynch, Mervyn ; McWhirter, Russell ; Morales, Miguel F. ; Morgan, Edward ; Prabu, Thiagaraj ; Rogers, Alan ; Roshi, Anish ; Shankar, Udaya ; Srivani, K. ; Subrahmanyan, Ravi ; Tingay, Steven ; Waterson, Mark ; Webster, Rachel ; Whitney, Alan ; Williams, Andrew ; Williams, Chris (2014) The Murchison Widefield Array Commissioning Survey: A low-frequency catalogue of 14 110 compact radio sources over 6 100 square degrees Publications of the Astronomical Society of Australia, 31 . Article ID e045. ISSN 1323-3580
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Official URL: https://www.cambridge.org/core/journals/publicatio...
Related URL: http://dx.doi.org/10.1017/pasa.2014.40
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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Cambridge University Press. |
| Keywords: | Radio Continuum: General; Surveys; Techniques: Interferometric |
| ID Code: | 114272 |
| Deposited On: | 21 May 2018 09:03 |
| Last Modified: | 21 May 2018 09:03 |
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