10C survey of radio sources at 15.7GHz - I. Observing, mapping and source extraction

Thomas M O Franzen; Matthew L. Davies; Elizabeth M. Waldram; Keith J B Grainge; Michael P. Hobson; Natasha Hurley-Walker; Anthony Lasenby; Malak Olamaie; Guy G. Pooley; Carmen Rodríguez-Gonzálvez; Richard D E Saunders; Anna M M Scaife; Michel P. Schammel; Paul F. Scott; Timothy W. Shimwell; David J. Titterington; Jonathan T L Zwart

doi:10.1111/j.1365-2966.2011.18887.x

10C survey of radio sources at 15.7GHz - I. Observing, mapping and source extraction

Thomas M O Franzen, Matthew L. Davies, Elizabeth M. Waldram, Keith J B Grainge, Michael P. Hobson, Natasha Hurley-Walker, Anthony Lasenby, Malak Olamaie, Guy G. Pooley, Carmen Rodríguez-Gonzálvez, Richard D E Saunders, Anna M M Scaife, Michel P. Schammel, Paul F. Scott, Timothy W. Shimwell, David J. Titterington, Jonathan T L Zwart

Research output: Contribution to journal › Article › peer-review

Abstract

We have observed an area of ≈27deg2 to an rms noise level of 0.2mJy at 15.7 GHz, using the Arcminute Microkelvin Imager Large Array. These observations constitute the most sensitive radio-source survey of any extent (≳0.2deg2) above 1.4 GHz. This paper presents the techniques employed for observing, mapping and source extraction. We have used a systematic procedure for extracting information and producing source catalogues, from maps with varying noise anduv-coverage. We have performed simulations to test our mapping and source-extraction procedures, and developed methods for identifying extended, overlapping and spurious sources in noisy images. In an accompanying paper, AMI Consortium: Davies et al., the first results from the 10C survey, including the deep 15.7-GHz source count, are presented. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.

Original language	English
Pages (from-to)	2699-2707
Number of pages	8
Journal	Monthly Notices of the Royal Astronomical Society
Volume	415
Issue number	3
DOIs	https://doi.org/10.1111/j.1365-2966.2011.18887.x
Publication status	Published - Aug 2011

Keywords

Catalogues
Methods: data analysis
Surveys
Techniques: image processing
Techniques: interferometric

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10.1111/j.1365-2966.2011.18887.x

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Franzen, T. M. O., Davies, M. L., Waldram, E. M., Grainge, K. J. B., Hobson, M. P., Hurley-Walker, N., Lasenby, A., Olamaie, M., Pooley, G. G., Rodríguez-Gonzálvez, C., Saunders, R. D. E., Scaife, A. M. M., Schammel, M. P., Scott, P. F., Shimwell, T. W., Titterington, D. J., & Zwart, J. T. L. (2011). 10C survey of radio sources at 15.7GHz - I. Observing, mapping and source extraction. Monthly Notices of the Royal Astronomical Society, 415(3), 2699-2707. https://doi.org/10.1111/j.1365-2966.2011.18887.x

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title = "10C survey of radio sources at 15.7GHz - I. Observing, mapping and source extraction",

abstract = "We have observed an area of ≈27deg2 to an rms noise level of 0.2mJy at 15.7 GHz, using the Arcminute Microkelvin Imager Large Array. These observations constitute the most sensitive radio-source survey of any extent (≳0.2deg2) above 1.4 GHz. This paper presents the techniques employed for observing, mapping and source extraction. We have used a systematic procedure for extracting information and producing source catalogues, from maps with varying noise anduv-coverage. We have performed simulations to test our mapping and source-extraction procedures, and developed methods for identifying extended, overlapping and spurious sources in noisy images. In an accompanying paper, AMI Consortium: Davies et al., the first results from the 10C survey, including the deep 15.7-GHz source count, are presented. {\textcopyright} 2011 The Authors Monthly Notices of the Royal Astronomical Society {\textcopyright} 2011 RAS.",

keywords = "Catalogues, Methods: data analysis, Surveys, Techniques: image processing, Techniques: interferometric",

author = "Franzen, {Thomas M O} and Davies, {Matthew L.} and Waldram, {Elizabeth M.} and Grainge, {Keith J B} and Hobson, {Michael P.} and Natasha Hurley-Walker and Anthony Lasenby and Malak Olamaie and Pooley, {Guy G.} and Carmen Rodr{\'i}guez-Gonz{\'a}lvez and Saunders, {Richard D E} and Scaife, {Anna M M} and Schammel, {Michel P.} and Scott, {Paul F.} and Shimwell, {Timothy W.} and Titterington, {David J.} and Zwart, {Jonathan T L}",

year = "2011",

month = aug,

doi = "10.1111/j.1365-2966.2011.18887.x",

language = "English",

volume = "415",

pages = "2699--2707",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press",

number = "3",

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Franzen, TMO, Davies, ML, Waldram, EM, Grainge, KJB, Hobson, MP, Hurley-Walker, N, Lasenby, A, Olamaie, M, Pooley, GG, Rodríguez-Gonzálvez, C, Saunders, RDE, Scaife, AMM, Schammel, MP, Scott, PF, Shimwell, TW, Titterington, DJ & Zwart, JTL 2011, '10C survey of radio sources at 15.7GHz - I. Observing, mapping and source extraction', Monthly Notices of the Royal Astronomical Society, vol. 415, no. 3, pp. 2699-2707. https://doi.org/10.1111/j.1365-2966.2011.18887.x

TY - JOUR

T1 - 10C survey of radio sources at 15.7GHz - I. Observing, mapping and source extraction

AU - Franzen, Thomas M O

AU - Davies, Matthew L.

AU - Waldram, Elizabeth M.

AU - Grainge, Keith J B

AU - Hobson, Michael P.

AU - Hurley-Walker, Natasha

AU - Lasenby, Anthony

AU - Olamaie, Malak

AU - Pooley, Guy G.

AU - Rodríguez-Gonzálvez, Carmen

AU - Saunders, Richard D E

AU - Scaife, Anna M M

AU - Schammel, Michel P.

AU - Scott, Paul F.

AU - Shimwell, Timothy W.

AU - Titterington, David J.

AU - Zwart, Jonathan T L

PY - 2011/8

Y1 - 2011/8

N2 - We have observed an area of ≈27deg2 to an rms noise level of 0.2mJy at 15.7 GHz, using the Arcminute Microkelvin Imager Large Array. These observations constitute the most sensitive radio-source survey of any extent (≳0.2deg2) above 1.4 GHz. This paper presents the techniques employed for observing, mapping and source extraction. We have used a systematic procedure for extracting information and producing source catalogues, from maps with varying noise anduv-coverage. We have performed simulations to test our mapping and source-extraction procedures, and developed methods for identifying extended, overlapping and spurious sources in noisy images. In an accompanying paper, AMI Consortium: Davies et al., the first results from the 10C survey, including the deep 15.7-GHz source count, are presented. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.

AB - We have observed an area of ≈27deg2 to an rms noise level of 0.2mJy at 15.7 GHz, using the Arcminute Microkelvin Imager Large Array. These observations constitute the most sensitive radio-source survey of any extent (≳0.2deg2) above 1.4 GHz. This paper presents the techniques employed for observing, mapping and source extraction. We have used a systematic procedure for extracting information and producing source catalogues, from maps with varying noise anduv-coverage. We have performed simulations to test our mapping and source-extraction procedures, and developed methods for identifying extended, overlapping and spurious sources in noisy images. In an accompanying paper, AMI Consortium: Davies et al., the first results from the 10C survey, including the deep 15.7-GHz source count, are presented. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.

KW - Catalogues

KW - Methods: data analysis

KW - Surveys

KW - Techniques: image processing

KW - Techniques: interferometric

U2 - 10.1111/j.1365-2966.2011.18887.x

DO - 10.1111/j.1365-2966.2011.18887.x

M3 - Article

SN - 1365-2966

VL - 415

SP - 2699

EP - 2707

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

10C survey of radio sources at 15.7GHz - I. Observing, mapping and source extraction

Abstract

Keywords

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