The Murchison Widefield Array Commissioning Survey: A Low-Frequency Catalogue of 14 110 Compact Radio Sources over 6 100 Square Degrees

Natasha Hurley-Walker; John Morgan; Randall B. Wayth; Paul J. Hancock; Martin E. Bell; Gianni Bernardi; Ramesh Bhat; Frank Briggs; Avinash A. Deshpande; Aaron Ewall-Wice; Lu Feng; Bryna J. Hazelton; Luke Hindson; Daniel C. Jacobs; David L. Kaplan; Nadia Kudryavtseva; Emil Lenc; Benjamin McKinley; Daniel Mitchell; Bart Pindor; Pietro Procopio; Divya Oberoi; André Offringa; Stephen Ord; Jennifer Riding; Judd D. Bowman; Roger Cappallo; Brian Corey; David Emrich; B. M. Gaensler; Robert Goeke; Lincoln Greenhill; Jacqueline Hewitt; Melanie Johnston-Hollitt; Justin Kasper; Eric Kratzenberg; Colin Lonsdale; Mervyn Lynch; Russell McWhirter; Miguel F. Morales; Edward Morgan; Thiagaraj Prabu; Alan Rogers; Anish Roshi; Udaya Shankar; K. Srivani; Ravi Subrahmanyan; Steven Tingay; Mark Waterson; Rachel Webster; Alan Whitney; Andrew Williams; Chris Williams

doi:10.1017/pasa.2014.40

The Murchison Widefield Array Commissioning Survey: A Low-Frequency Catalogue of 14 110 Compact Radio Sources over 6 100 Square Degrees

Natasha Hurley-Walker^*, John Morgan, Randall B. Wayth, Paul J. Hancock, Martin E. Bell, Gianni Bernardi, Ramesh Bhat, Frank Briggs, Avinash A. Deshpande, Aaron Ewall-Wice, Lu Feng, Bryna J. Hazelton, Luke Hindson, Daniel C. Jacobs, David L. Kaplan, Nadia Kudryavtseva, Emil Lenc, Benjamin McKinley, Daniel Mitchell, Bart PindorPietro Procopio, Divya Oberoi, André Offringa, Stephen Ord, Jennifer Riding, Judd D. Bowman, Roger Cappallo, Brian Corey, David Emrich, B. M. Gaensler, Robert Goeke, Lincoln Greenhill, Jacqueline Hewitt, Melanie Johnston-Hollitt, Justin Kasper, Eric Kratzenberg, Colin Lonsdale, Mervyn Lynch, Russell McWhirter, Miguel F. Morales, Edward Morgan, Thiagaraj Prabu, Alan Rogers, Anish Roshi, Udaya Shankar, K. Srivani, Ravi Subrahmanyan, Steven Tingay, Mark Waterson, Rachel Webster, Alan Whitney, Andrew Williams, Chris Williams

^*Corresponding author for this work

Research output: Contribution to journal › Review article › peer-review

66 Citations (Scopus)

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.

Original language	English
Article number	e045
Journal	Publications of the Astronomical Society of Australia
Volume	31
DOIs	https://doi.org/10.1017/pasa.2014.40
Publication status	Published - 14 Nov 2014

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Hurley-Walker, N., Morgan, J., Wayth, R. B., Hancock, P. J., Bell, M. E., Bernardi, G., Bhat, R., Briggs, F., Deshpande, A. A., Ewall-Wice, A., Feng, L., Hazelton, B. J., Hindson, L., Jacobs, D. C., Kaplan, D. L., Kudryavtseva, N., Lenc, E., McKinley, B., Mitchell, D., ... Williams, C. (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 e045. https://doi.org/10.1017/pasa.2014.40

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title = "The Murchison Widefield Array Commissioning Survey: A Low-Frequency Catalogue of 14 110 Compact Radio Sources over 6 100 Square Degrees",

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.",

keywords = "radio continuum: general, surveys, techniques: interferometric",

author = "Natasha Hurley-Walker and John Morgan and Wayth, {Randall B.} and Hancock, {Paul J.} and Bell, {Martin E.} and Gianni Bernardi and Ramesh Bhat and Frank Briggs and Deshpande, {Avinash A.} and Aaron Ewall-Wice and Lu Feng and Hazelton, {Bryna J.} and Luke Hindson and Jacobs, {Daniel C.} and Kaplan, {David L.} and Nadia Kudryavtseva and Emil Lenc and Benjamin McKinley and Daniel Mitchell and Bart Pindor and Pietro Procopio and Divya Oberoi and Andr{\'e} Offringa and Stephen Ord and Jennifer Riding and Bowman, {Judd D.} and Roger Cappallo and Brian Corey and David Emrich and Gaensler, {B. M.} and Robert Goeke and Lincoln Greenhill and Jacqueline Hewitt and Melanie Johnston-Hollitt and Justin Kasper and Eric Kratzenberg and Colin Lonsdale and Mervyn Lynch and Russell McWhirter and Morales, {Miguel F.} and Edward Morgan and Thiagaraj Prabu and Alan Rogers and Anish Roshi and Udaya Shankar and K. Srivani and Ravi Subrahmanyan and Steven Tingay and Mark Waterson and Rachel Webster and Alan Whitney and Andrew Williams and Chris Williams",

note = "Publisher Copyright: {\textcopyright} 2014 Astronomical Society of Australia.",

year = "2014",

month = nov,

day = "14",

doi = "10.1017/pasa.2014.40",

language = "English",

volume = "31",

journal = "Publications of the Astronomical Society of Australia",

issn = "1323-3580",

publisher = "Cambridge University Press",

}

Hurley-Walker, N, Morgan, J, Wayth, RB, Hancock, PJ, Bell, ME, Bernardi, G, Bhat, R, Briggs, F, Deshpande, AA, Ewall-Wice, A, Feng, L, Hazelton, BJ, Hindson, L, Jacobs, DC, Kaplan, DL, Kudryavtseva, N, Lenc, E, McKinley, B, Mitchell, D, Pindor, B, Procopio, P, Oberoi, D, Offringa, A, Ord, S, Riding, J, Bowman, JD, Cappallo, R, Corey, B, Emrich, D, Gaensler, BM, Goeke, R, Greenhill, L, Hewitt, J, Johnston-Hollitt, M, Kasper, J, Kratzenberg, E, Lonsdale, C, Lynch, M, McWhirter, R, Morales, MF, Morgan, E, Prabu, T, Rogers, A, Roshi, A, Shankar, U, Srivani, K, Subrahmanyan, R, Tingay, S, Waterson, M, Webster, R, Whitney, A, Williams, A & Williams, C 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, vol. 31, e045. https://doi.org/10.1017/pasa.2014.40

TY - JOUR

T1 - The Murchison Widefield Array Commissioning Survey

T2 - A Low-Frequency Catalogue of 14 110 Compact Radio Sources over 6 100 Square Degrees

AU - Hurley-Walker, Natasha

AU - Morgan, John

AU - Wayth, Randall B.

AU - Hancock, Paul J.

AU - Bell, Martin E.

AU - Bernardi, Gianni

AU - Bhat, Ramesh

AU - Briggs, Frank

AU - Deshpande, Avinash A.

AU - Ewall-Wice, Aaron

AU - Feng, Lu

AU - Hazelton, Bryna J.

AU - Hindson, Luke

AU - Jacobs, Daniel C.

AU - Kaplan, David L.

AU - Kudryavtseva, Nadia

AU - Lenc, Emil

AU - McKinley, Benjamin

AU - Mitchell, Daniel

AU - Pindor, Bart

AU - Procopio, Pietro

AU - Oberoi, Divya

AU - Offringa, André

AU - Ord, Stephen

AU - Riding, Jennifer

AU - Bowman, Judd D.

AU - Cappallo, Roger

AU - Corey, Brian

AU - Emrich, David

AU - Gaensler, B. M.

AU - Goeke, Robert

AU - Greenhill, Lincoln

AU - Hewitt, Jacqueline

AU - Johnston-Hollitt, Melanie

AU - Kasper, Justin

AU - Kratzenberg, Eric

AU - Lonsdale, Colin

AU - Lynch, Mervyn

AU - McWhirter, Russell

AU - Morales, Miguel F.

AU - Morgan, Edward

AU - Prabu, Thiagaraj

AU - Rogers, Alan

AU - Roshi, Anish

AU - Shankar, Udaya

AU - Srivani, K.

AU - Subrahmanyan, Ravi

AU - Tingay, Steven

AU - Waterson, Mark

AU - Webster, Rachel

AU - Whitney, Alan

AU - Williams, Andrew

AU - Williams, Chris

PY - 2014/11/14

Y1 - 2014/11/14

N2 - 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.

AB - 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.

KW - radio continuum: general

KW - surveys

KW - techniques: interferometric

UR - http://www.scopus.com/inward/record.url?scp=84921843426&partnerID=8YFLogxK

U2 - 10.1017/pasa.2014.40

DO - 10.1017/pasa.2014.40

M3 - Review article

SN - 1323-3580

VL - 31

JO - Publications of the Astronomical Society of Australia

JF - Publications of the Astronomical Society of Australia

M1 - e045

ER -

The Murchison Widefield Array Commissioning Survey: A Low-Frequency Catalogue of 14 110 Compact Radio Sources over 6 100 Square Degrees

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