The nature of 500 micron risers I: SMA observations
We present SMA observations at resolutions from 0.35 to 3 arcsec of a sample of 34 candidate high redshift dusty star forming galaxies (DSFGs). These sources...
The nature of arms in spiral galaxies. II. The sample
We present here the results of an imaging study of eight grand-design and two intermediate-arm galaxies, based on CCD observations in U, B, V, R and I. We give...
The nature of arms in spiral galaxies. III. Azimuthal profiles
In this paper we analyse the structure of a small sample of galaxies using a set of CCD images in standard photometric bands presented in a previous paper (del...
The nature of arms in spiral galaxies. IV. Symmetries and asymmetries
A Fourier analysis of the intensity distribution in the planes of nine spiral galaxies is performed. In terms of the arm classification scheme of cite[Elmegreen...
The Nature of Close Companions of the BL Lacertae Objects 1ES 0502+675 and 1ES 1440+122
We report on deep radio images and optical spectroscopy of two BL Lac objects that have very close compact companions. The two targets, 1ES 0502+675 and 1ES...
The Nature of Dwarf Elliptical Galaxies: An Observing Project for OSIRIS
Although dwarf elliptical galaxies are the dominant galaxy population in nearby clusters, their origin and nature remain a mystery. The main aim of this project...
The nature of faint radio galaxies at high redshifts
We present spectra and near-infrared images of a sample of faint radio sources initially selected as promising high-redshift radio galaxy (HzRG) candidates. We...
The Nature of Fossil Galaxy Groups: Are They Really Fossils?
We use SDSS-DR4 photometric and spectroscopic data out to redshift z ~ 0.1 combined with ROSAT All Sky Survey X-ray data to produce a sample of 25 fossil groups...
The nature of giant clumps in high-z discs: a deep-learning comparison of simulations and observations
We use deep learning to explore the nature of observed giant clumps in high-redshift disc galaxies, based on their identification and classification in...