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LOFAR observations of the XMM-LSS field
C. L. Hale, W. Williams, M. J. Jarvis +12
We present observations of the XMM Large-Scale Structure (XMM-LSS) field observed with the LOw Frequency ARray (LOFAR) at 120-168 MHz. Centred at a J2000 declination of $-4.5^{\cir…
LoTSS/HETDEX: Optical quasars I. Low-frequency radio properties of optically selected quasars
Gülay Gürkan, Martin Hardcastle, Philip Best +17
The radio-loud/radio-quiet (RL/RQ) dichotomy in quasars is still an open question. Although it is thought that accretion onto supermassive black holes in the centre the host galaxi…
The Causes of the Red Sequence, the Blue Cloud, the Green Valley and the Green Mountain
Stephen Eales, Maarten Baes, Nathan Bourne +23
The galaxies found in optical surveys fall in two distinct regions of a diagram of optical colour versus absolute magnitude: the red sequence and the blue cloud with the green vall…