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184 papers · 1 filter
Calibrating [OII] star-formation rates at z>1 from dual Hα-[OII] imaging from HiZELS
Masao Hayashi, David Sobral, Philip N. Best +2
We investigate the relationship between Hα and [OII](λ3727) emission in faint star-forming galaxies at z=1.47 with dust uncorrected star formation rates (SFRs) down to 1.4 Msun/yr,…
Effect of the interactions and environment on nuclear activity
J. Sabater, P. N. Best, M. Argudo-Fernández
We present a study of the prevalence of optical and radio nuclear activity with respect to the environment and interactions in a sample of SDSS galaxies. We defined a local density…
Putting the Precision in Precision Cosmology: How accurate should your data covariance matrix be?
Andy Taylor, Benjamin Joachimi, Thomas Kitching
Cosmological parameter estimation requires that the likelihood function of the data is accurately known. Assuming that cosmological large-scale structure power spectra data are mul…
Evolution of the Sizes of Galaxies over 7<z<12 Revealed by the 2012 Hubble Ultra Deep Field Campaign
Yoshiaki Ono, Masami Ouchi, Emma Curtis-Lake +14
We analyze the redshift- and luminosity-dependent sizes of dropout galaxy candidates in the redshift range z~7-12 using deep images from the UDF12 campaign, data which offers two d…
CFHTLenS tomographic weak lensing: Quantifying accurate redshift distributions
Jonathan Benjamin, Ludovic Van Waerbeke, Catherine Heymans +18
The Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) comprises deep multi-colour (u*g'r'i'z') photometry spanning 154 square degrees, with accurate photometric redshifts an…
Inferring the mass of sub-millimetre galaxies by exploiting their gravitational magnification of background galaxies
H. Hildebrandt, L. van Waerbeke, D. Scott +25
Dust emission at sub-millimetre wavelengths allows us to trace the early phases of star formation in the Universe. In order to understand the physical processes involved in this mo…