Morphology and evolution of ultraluminous IR galaxies
ASTROPHYSICS AND SPACE SCIENCE 269 (1999) 399-402
No evidence for a 'redshift cut-off' for the most powerful classical double radio sources
ASTR SOC P 193 (1999) 90-93
Abstract:
We use three samples (3CRR, 6CE and 6C*) to investigate the radio luminosity function (RLF) for the 'most powerful' low-frequency selected radio sources. We find that the data are well fitted by a model with a constant ca-moving space density at high redshift as well as by one with a declining co-moving space density above some particular redshift. This behaviour is very similar to that inferred for steep-spectrum radio quasars by Willott et al (1998) in Line with the expectations of Unified Schemes. We conclude that there is as yet no evidence for a 'redshift cutoff' in the co-moving space densities of powerful classical double radio sources, and rule out a art-off at z less than or similar to 2.5.Objects in NGC 205 resolved into stellar associations by Hubble Space Telescope ultraviolet imaging
ASTROPHYSICAL JOURNAL 515:1 (1999) L17-L20
Optical spectroscopy of two overlapping, flux-density-limited samples of radio sources in the North Ecliptic Cap, selected at 38 and 151 MHz
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 308:4 (1999) 1096-1116
Proposed identification of Hubble Deep Field submillimeter source HDF 850.1
ASTRONOMY & ASTROPHYSICS 347:3 (1999) 809-820