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- California Institute of TechnologyUS7 papers
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11 papers · 1 filter
Radio Properties of EROs in the Phoenix Deep Survey
J. Afonso, A. M. Hopkins, M. Sullivan +3
Insensitive to dust obscuration, radio wavelengths are ideal to study star-forming galaxies free of dust induced biases. Using data from the Phoenix Deep Survey, we have identified…
The Phoenix Deep Survey: Evolution of Star Forming Galaxies
A. M. Hopkins, J. Afonso, A. Georgakakis +3
The Phoenix Deep Survey (PDS) is a multiwavelength survey based on deep 1.4 GHz radio observations used to identify a large sample of star forming galaxies to z=1. Photometric reds…
HI kinematics in a massive spiral galaxy at z=0.89
L. V. E. Koopmans, A. G. de Bruyn
We present a kinematic model of the neutral-hydrogen in the spiral galaxy of the lens system PKS1830-211, based on a Multi Element Radio-Linked Interferometer (MERLIN) 1.4-GHz radi…
The dark matter halos of spheroidal galaxies and clusters of galaxies
T. Treu, L. V. E. Koopmans, D. J. Sand +2
We describe the first results from two observational projects aimed at measuring the amount and spatial distribution of dark matter in distant early-type galaxies (E/S0s) and clust…
Effects of Stellar-Mass and the ISM on the Evolving Morphologies of Planetary Nebulae
E. Villaver
A significant step forward in the understanding of Planetary Nebula (PN) formation can be achieved by exploring the connection of PN with stellar evolution. In particular, the init…
The End of the Dark Ages: Probing the Reionization of the Universe with HST and JWST
N. Panagia, M. Stiavelli, S. M. Fall
Limiting the number of model-dependent assumptions to a minimum, we discuss the detectability of the sources responsible for reionization with existing and planned telescopes. We c…