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Improving photometric redshift estimation using GPz: size information, post processing and improved photometry
(Oxford University Press, 2017)
The next generation of large-scale imaging surveys (such as those conducted with the Large Synoptic Survey Telescope and Euclid) will require accurate photometric redshifts in order to optimally extract cosmological ...
MUFASA: The strength and evolution of galaxy conformity in various tracers
(Oxford University Press, 2017)
We investigate galaxy conformity using the Mufasa cosmological hydrodynamical
simulation. We show a bimodal distribution in galaxy colour with radius, albeit
with too many low-mass quenched satellite galaxies compared ...
Gaia Data Release 1. Open cluster astrometry: performance, limitations, and future prospects
(EDP Sciences, 2017)
CONTEXT: The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS). This is a subset of about 2 million stars for which,
besides the position and photometry, the proper motion and parallax are ...
Evolution from 4f-electron antiferromagnetic to ferromagnetic order in the CeCu(Ge1-xSnx) alloy series (0≤x≤1)
(American Institute of Physics Inc., 2017)
We report the evolution from ferromagnetic (FM) to antiferromagnetic (AFM) state in CeCu(Ge1-xSnx) investigated by means of magnetic and heat capacity measurements. X-ray diffraction studies for all compositions indicate ...
Calibrating photometric redshifts with intensity mapping observations
(American Physical Society, 2017)
Imaging surveys of galaxies will have a high number density and angular resolution yet a poor
redshift precision. Intensity maps of neutral hydrogen (HI) will have accurate redshift resolution
yet will not resolve ...
Mufasa: The assembly of the red sequence
(Oxford University Press, 2017)
We examine the growth and evolution of quenched galaxies in the Mufasa cosmo-
logical hydrodynamic simulations that include an evolving halo mass-based quench-
ing prescription, with galaxy colours computed accounting ...
News from the EREBOS project
(De Gruyter Open, 2017)
Planets and brown dwarfs in close orbits will interact with their host stars, as soon as the stars evolve to become
red giants. However, the outcome of those interactions is still unclear. Recently, several brown dwarfs ...
Statistical gamma-ray decay studies at iThemba LABS
(EDP Sciences, 2017)
Abstract. A program to study the γ -ray decay from the region of high-level density has been established
at iThemba LABS, where a high-resolution gamma-ray detector array is used in conjunction with silicon
particle-telescopes. ...
Intrinsic scatter of caustic masses and hydrostatic bias: An observational study
(EDP Sciences, 2017)
All estimates of cluster mass have some intrinsic scatter and perhaps some bias with true mass even in the absence of measurement
errors for example caused by cluster triaxiality and large scale structure. Knowledge of ...