In:
Publications of the Astronomical Society of Australia, Cambridge University Press (CUP), Vol. 31 ( 2014)
Abstract:
We present the results of an approximately 6 100 deg 2 104–196 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.
Type of Medium:
Online Resource
ISSN:
1323-3580
,
1448-6083
DOI:
10.1017/pasa.2014.40
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
2014
detail.hit.zdb_id:
2560489-2
detail.hit.zdb_id:
2079225-6
SSG:
16,12
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