The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release
We present the VLA-COSMOS 3 GHz Large Project based on 384 h of observations with the Karl G. Jansky Very Large Array (VLA) at 3 GHz (10 cm) toward the two square degree Cosmic Evolution Survey (COSMOS) field. The final mosaic reaches a median rms of 2.3 µJy beam-1 over the two square degrees at an...
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| Format: | Journal Article |
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EDP Sciences
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/74266 |
| _version_ | 1848763226200735744 |
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| author | Smolcic, V. Novak, M. Bondi, M. Ciliegi, P. Mooley, K. Schinnerer, E. Zamorani, G. Navarrete, F. Bourke, S. Karim, A. Vardoulaki, E. Leslie, S. Delhaize, J. Carilli, C. Myers, S. Baran, N. Delvecchio, I. Miettinen, O. Banfield, J. Balokovic, M. Bertoldi, F. Capak, P. Frail, D. Hallinan, G. Hao, H. Herrera Ruiz, N. Horesh, A. Ilbert, O. Intema, Hubertus Jelic, V. Klöckner, H. Krpan, J. Kulkarni, S. McCracken, H. Laigle, C. Middleberg, E. Murphy, E. Sargent, M. Scoville, N. Sheth, K. |
| author_facet | Smolcic, V. Novak, M. Bondi, M. Ciliegi, P. Mooley, K. Schinnerer, E. Zamorani, G. Navarrete, F. Bourke, S. Karim, A. Vardoulaki, E. Leslie, S. Delhaize, J. Carilli, C. Myers, S. Baran, N. Delvecchio, I. Miettinen, O. Banfield, J. Balokovic, M. Bertoldi, F. Capak, P. Frail, D. Hallinan, G. Hao, H. Herrera Ruiz, N. Horesh, A. Ilbert, O. Intema, Hubertus Jelic, V. Klöckner, H. Krpan, J. Kulkarni, S. McCracken, H. Laigle, C. Middleberg, E. Murphy, E. Sargent, M. Scoville, N. Sheth, K. |
| author_sort | Smolcic, V. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the VLA-COSMOS 3 GHz Large Project based on 384 h of observations with the Karl G. Jansky Very Large Array (VLA) at 3 GHz (10 cm) toward the two square degree Cosmic Evolution Survey (COSMOS) field. The final mosaic reaches a median rms of 2.3 µJy beam-1 over the two square degrees at an angular resolution of 0.75?. To fully account for the spectral shape and resolution variations across the broad (2 GHz) band, we image all data with a multiscale, multifrequency synthesis algorithm. We present a catalog of 10 830 radio sources down to 5s, out of which 67 are combined from multiple components. Comparing the positions of our 3 GHz sources with those from the Very Long Baseline Array (VLBA)-COSMOS survey, we estimate that the astrometry is accurate to 0.01? at the bright end (signal-to-noise ratio, S/N3 GHz > 20). Survival analysis on our data combined with the VLA-COSMOS 1.4 GHz Joint Project catalog yields an expected median radio spectral index of a = -0.7. We compute completeness corrections via Monte Carlo simulations to derive the corrected 3 GHz source counts. Our counts are in agreement with previously derived 3 GHz counts based on single-pointing (0.087 square degrees) VLA data. In summary, the VLA-COSMOS 3 GHz Large Project simultaneously provides the largest and deepest radio continuum survey at high (0.75?) angular resolution to date, bridging the gap between last-generation and next-generation surveys. |
| first_indexed | 2025-11-14T11:00:05Z |
| format | Journal Article |
| id | curtin-20.500.11937-74266 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:00:05Z |
| publishDate | 2017 |
| publisher | EDP Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-742662019-03-12T05:52:07Z The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release Smolcic, V. Novak, M. Bondi, M. Ciliegi, P. Mooley, K. Schinnerer, E. Zamorani, G. Navarrete, F. Bourke, S. Karim, A. Vardoulaki, E. Leslie, S. Delhaize, J. Carilli, C. Myers, S. Baran, N. Delvecchio, I. Miettinen, O. Banfield, J. Balokovic, M. Bertoldi, F. Capak, P. Frail, D. Hallinan, G. Hao, H. Herrera Ruiz, N. Horesh, A. Ilbert, O. Intema, Hubertus Jelic, V. Klöckner, H. Krpan, J. Kulkarni, S. McCracken, H. Laigle, C. Middleberg, E. Murphy, E. Sargent, M. Scoville, N. Sheth, K. We present the VLA-COSMOS 3 GHz Large Project based on 384 h of observations with the Karl G. Jansky Very Large Array (VLA) at 3 GHz (10 cm) toward the two square degree Cosmic Evolution Survey (COSMOS) field. The final mosaic reaches a median rms of 2.3 µJy beam-1 over the two square degrees at an angular resolution of 0.75?. To fully account for the spectral shape and resolution variations across the broad (2 GHz) band, we image all data with a multiscale, multifrequency synthesis algorithm. We present a catalog of 10 830 radio sources down to 5s, out of which 67 are combined from multiple components. Comparing the positions of our 3 GHz sources with those from the Very Long Baseline Array (VLBA)-COSMOS survey, we estimate that the astrometry is accurate to 0.01? at the bright end (signal-to-noise ratio, S/N3 GHz > 20). Survival analysis on our data combined with the VLA-COSMOS 1.4 GHz Joint Project catalog yields an expected median radio spectral index of a = -0.7. We compute completeness corrections via Monte Carlo simulations to derive the corrected 3 GHz source counts. Our counts are in agreement with previously derived 3 GHz counts based on single-pointing (0.087 square degrees) VLA data. In summary, the VLA-COSMOS 3 GHz Large Project simultaneously provides the largest and deepest radio continuum survey at high (0.75?) angular resolution to date, bridging the gap between last-generation and next-generation surveys. 2017 Journal Article http://hdl.handle.net/20.500.11937/74266 10.1051/0004-6361/201628704 EDP Sciences fulltext |
| spellingShingle | Smolcic, V. Novak, M. Bondi, M. Ciliegi, P. Mooley, K. Schinnerer, E. Zamorani, G. Navarrete, F. Bourke, S. Karim, A. Vardoulaki, E. Leslie, S. Delhaize, J. Carilli, C. Myers, S. Baran, N. Delvecchio, I. Miettinen, O. Banfield, J. Balokovic, M. Bertoldi, F. Capak, P. Frail, D. Hallinan, G. Hao, H. Herrera Ruiz, N. Horesh, A. Ilbert, O. Intema, Hubertus Jelic, V. Klöckner, H. Krpan, J. Kulkarni, S. McCracken, H. Laigle, C. Middleberg, E. Murphy, E. Sargent, M. Scoville, N. Sheth, K. The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release |
| title | The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release |
| title_full | The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release |
| title_fullStr | The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release |
| title_full_unstemmed | The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release |
| title_short | The VLA-COSMOS 3 GHz Large Project: Continuum data and source catalog release |
| title_sort | vla-cosmos 3 ghz large project: continuum data and source catalog release |
| url | http://hdl.handle.net/20.500.11937/74266 |