TY - JOUR
T1 - The LBDS Hercules sample of mJy radio sources at 1.4 GHz - I. Multicolour photometry
AU - Waddington, I.
AU - Windhorst, Rogier
AU - Dunlop, J. S.
AU - Koo, D. C.
AU - Peacock, J. A.
PY - 2000/10/1
Y1 - 2000/10/1
N2 - The results are presented of an extensive programme of optical and infrared imaging of radio sources in a complete subsample of the Leiden-Berkeley Deep Survey. The LBDS Hercules sample consists of 72 sources observed at 1.4 GHz, with flux densities S1.4 ≥ 1.0 mJy, in a 1.2 deg2 region of Hercules. This sample is almost completely identified in the g, r, i and K bands, with some additional data available at J and H. The magnitude distributions peak at r ≃ 22 mag, K ≃ 16 mag and extend down to r ≃ 26 mag, K ≃ 21 mag. The K-band magnitude distributions for the radio galaxies and quasars are compared with those of other radio surveys. At S1.4 GHZ ≲ 1 Jy, the K-band distribution does not change significantly with radio flux density. The sources span a broad range of colours, with several being extremely red (r - K ≳ 6). Though small, this is the most optically complete sample of mJy radio sources available at 1.4 GHz, and is ideally suited for studying the evolution of the radio luminosity function out to high redshifts.
AB - The results are presented of an extensive programme of optical and infrared imaging of radio sources in a complete subsample of the Leiden-Berkeley Deep Survey. The LBDS Hercules sample consists of 72 sources observed at 1.4 GHz, with flux densities S1.4 ≥ 1.0 mJy, in a 1.2 deg2 region of Hercules. This sample is almost completely identified in the g, r, i and K bands, with some additional data available at J and H. The magnitude distributions peak at r ≃ 22 mag, K ≃ 16 mag and extend down to r ≃ 26 mag, K ≃ 21 mag. The K-band magnitude distributions for the radio galaxies and quasars are compared with those of other radio surveys. At S1.4 GHZ ≲ 1 Jy, the K-band distribution does not change significantly with radio flux density. The sources span a broad range of colours, with several being extremely red (r - K ≳ 6). Though small, this is the most optically complete sample of mJy radio sources available at 1.4 GHz, and is ideally suited for studying the evolution of the radio luminosity function out to high redshifts.
KW - Galaxies: active
KW - Galaxies: photometry
KW - Quasars: general
KW - Radio continuum: galaxies
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U2 - 10.1046/j.1365-8711.2000.03756.x
DO - 10.1046/j.1365-8711.2000.03756.x
M3 - Article
AN - SCOPUS:0013302050
SN - 0035-8711
VL - 317
SP - 801
EP - 824
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -