LOFAR 150-MHz observations of the Boötes field: catalogue and source counts
We present the first wide area (19 deg 2 ), deep (≈120-150 μJy beam -1 ), high-resolution (5.6 � 7.4 arcsec) LOFAR High Band Antenna image of the Bo�tes field made at 130-169 MHz. This image is at least an order of magnitude deeper and 3-5 times higher in angular resolution than previously achie...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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Oxford University Press
2016
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| _version_ | 1826303210591092736 |
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| author | Williams, W van Weeren, R Röttgering, H Best, P Dijkema, T de Gasperin, F Hardcastle, M Heald, G Prandoni, I Sabater, J Shimwell, T Tasse, C van Bemmel, I Brüggen, M Brunetti, G Conway, J Enßlin, T Engels, D Falcke, H Ferrari, C Haverkorn, M Jackson, N Jarvis, M Kapińska, A Mahony, E Miley, G Morabito, L Morganti, R Orrú, E Retana-Montenegro, E Sridhar, S Toribio, M White, G Wise, M Zwart, J |
| author_facet | Williams, W van Weeren, R Röttgering, H Best, P Dijkema, T de Gasperin, F Hardcastle, M Heald, G Prandoni, I Sabater, J Shimwell, T Tasse, C van Bemmel, I Brüggen, M Brunetti, G Conway, J Enßlin, T Engels, D Falcke, H Ferrari, C Haverkorn, M Jackson, N Jarvis, M Kapińska, A Mahony, E Miley, G Morabito, L Morganti, R Orrú, E Retana-Montenegro, E Sridhar, S Toribio, M White, G Wise, M Zwart, J |
| author_sort | Williams, W |
| collection | OXFORD |
| description | We present the first wide area (19 deg 2 ), deep (≈120-150 μJy beam -1 ), high-resolution (5.6 � 7.4 arcsec) LOFAR High Band Antenna image of the Bo�tes field made at 130-169 MHz. This image is at least an order of magnitude deeper and 3-5 times higher in angular resolution than previously achieved for this field at low frequencies. The observations and data reduction, which includes full direction-dependent calibration, are described here. We present a radio source catalogue containing 6 276 sources detected over an area of 19 deg 2 , with a peak flux density threshold of 5σ. As the first thorough test of the facet calibration strategy, introduced by van Weeren et al., we investigate the flux and positional accuracy of the catalogue. We present differential source counts that reach an order of magnitude deeper in flux density than previously achieved at these low frequencies, and show flattening at 150-MHz flux densities below 10 mJy associated with the rise of the low flux density star-forming galaxies and radio-quiet AGN. |
| first_indexed | 2024-03-07T05:59:12Z |
| format | Journal article |
| id | oxford-uuid:eb96f806-578f-48b4-8bbd-f3d5d6d3119b |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:59:12Z |
| publishDate | 2016 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:eb96f806-578f-48b4-8bbd-f3d5d6d3119b2022-03-27T11:10:54ZLOFAR 150-MHz observations of the Boötes field: catalogue and source countsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:eb96f806-578f-48b4-8bbd-f3d5d6d3119bSymplectic Elements at OxfordOxford University Press2016Williams, Wvan Weeren, RRöttgering, HBest, PDijkema, Tde Gasperin, FHardcastle, MHeald, GPrandoni, ISabater, JShimwell, TTasse, Cvan Bemmel, IBrüggen, MBrunetti, GConway, JEnßlin, TEngels, DFalcke, HFerrari, CHaverkorn, MJackson, NJarvis, MKapińska, AMahony, EMiley, GMorabito, LMorganti, ROrrú, ERetana-Montenegro, ESridhar, SToribio, MWhite, GWise, MZwart, JWe present the first wide area (19 deg 2 ), deep (≈120-150 μJy beam -1 ), high-resolution (5.6 � 7.4 arcsec) LOFAR High Band Antenna image of the Bo�tes field made at 130-169 MHz. This image is at least an order of magnitude deeper and 3-5 times higher in angular resolution than previously achieved for this field at low frequencies. The observations and data reduction, which includes full direction-dependent calibration, are described here. We present a radio source catalogue containing 6 276 sources detected over an area of 19 deg 2 , with a peak flux density threshold of 5σ. As the first thorough test of the facet calibration strategy, introduced by van Weeren et al., we investigate the flux and positional accuracy of the catalogue. We present differential source counts that reach an order of magnitude deeper in flux density than previously achieved at these low frequencies, and show flattening at 150-MHz flux densities below 10 mJy associated with the rise of the low flux density star-forming galaxies and radio-quiet AGN. |
| spellingShingle | Williams, W van Weeren, R Röttgering, H Best, P Dijkema, T de Gasperin, F Hardcastle, M Heald, G Prandoni, I Sabater, J Shimwell, T Tasse, C van Bemmel, I Brüggen, M Brunetti, G Conway, J Enßlin, T Engels, D Falcke, H Ferrari, C Haverkorn, M Jackson, N Jarvis, M Kapińska, A Mahony, E Miley, G Morabito, L Morganti, R Orrú, E Retana-Montenegro, E Sridhar, S Toribio, M White, G Wise, M Zwart, J LOFAR 150-MHz observations of the Boötes field: catalogue and source counts |
| title | LOFAR 150-MHz observations of the Boötes field: catalogue and source counts |
| title_full | LOFAR 150-MHz observations of the Boötes field: catalogue and source counts |
| title_fullStr | LOFAR 150-MHz observations of the Boötes field: catalogue and source counts |
| title_full_unstemmed | LOFAR 150-MHz observations of the Boötes field: catalogue and source counts |
| title_short | LOFAR 150-MHz observations of the Boötes field: catalogue and source counts |
| title_sort | lofar 150 mhz observations of the bootes field catalogue and source counts |
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