dc.contributor.author | Jarvis, M | |
dc.contributor.author | Heywood, I | |
dc.contributor.author | Hale, C | |
dc.date.accessioned | 2021-02-10T14:50:25Z | |
dc.date.available | 2021-02-10T14:50:25Z | |
dc.date.issued | 2020-06-20 | |
dc.identifier.citation | Jarvis, M; et al. 2020. VLA imaging of the XMM-LSS/VIDEO deep field at 1–2 GHz. Monthly Notices of the Royal Astronomical Society. 496(3):3469-3481 | en_US |
dc.identifier.uri | http://doi.org/10.1093/mnras/staa1770 | |
dc.identifier.uri | http://hdl.handle.net/10566/5891 | |
dc.description.abstract | Modern radio telescopes are routinely reaching depths where normal star-forming galaxies are
the dominant observed population. Realizing the potential of radio as a tracer of star formation
and black hole activity over cosmic time involves achieving such depths over representative
volumes, with radio forming part of a larger multiwavelength campaign. In pursuit of this, we
used the Karl G. Jansky Very Large Array (VLA) to image ∼5 deg2 of the VIDEO/XMM-LSS
extragalactic deep field at 1–2 GHz. We achieve a median depth of 16 μJy beam−1 with an
angular resolution of 4.5 arcsec. Comparisons with existing radio observations of XMM-LSS
showcase the improved survey speed of the upgraded VLA: we cover 2.5 times the area and
increase the depth by ∼20 per cent in 40 per cent of the time. Direction-dependent calibration
and wide-field imaging were required to suppress the error patterns from off-axis sources
of even modest brightness. We derive a catalogue containing 5762 sources from the final
mosaic. Sub-band imaging provides in-band spectral indices for 3458 (60 per cent) sources,
with the average spectrum becoming flatter than the canonical synchrotron slope below 1 mJy.
Positional and flux density accuracy of the observations, and the differential source counts are
in excellent agreement with those of existing measurements. A public release of the images
and catalogue accompanies this article. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Oxford University Press | en_US |
dc.subject | radio continuum | en_US |
dc.subject | techniques: interferometric | en_US |
dc.subject | galaxies | en_US |
dc.title | VLA imaging of the XMM-LSS/VIDEO deep field at 1–2 GHz | en_US |
dc.type | Article | en_US |