Search Publications
Exploring dark energy with SNAP [review article]
Aldering, G.
The accelerating expansion of the Universe is one of the most surprising and potentially profound discoveries of modern cosmology. Measuring the acceleration well enough to meaningfully constrain interesting physical models requires improvements an order of magnitude beyond on-going and near-term experiments. The Supernova/Acceleration Probe has b…
Star formation histories in local group dwarf galaxies [review article]
Skillman, Evan D.
I review observations made with the Hubble Space Telescope which have improved our view of both recent (ages ⩽1 Gyr) and ancient (ages ⩾1 Gyr) star formation histories in dwarf galaxies. The method of reconstructing recent star formation histories has been well tested, and now the major challenge is to build a large database of suitable observatio…
Lessons from the GOODS [review article]
Giavalisco, Mauro
The Great Observatories Origins Deep Survey (GOODS) is a multi-facility project that combines data from NASA's Hubble, Chandra and Spitzer space telescopes with spectroscopy and ancillary optical and near-IR imaging from the ground (VLT, Keck, Gemini, Subaru, NOAO) to provide a database for studying galaxy and AGN evolution up to redshifts z ∼ 6.5…
Why we need wide-field imaging from space to understand galaxy formation [review article]
Somerville, R. S.
Space-based imaging with the Hubble Space Telescope has demonstrated the many advantages of viewing galaxies from outside the Earth's atmosphere. Hubble has shown us the amazing complexity of galaxies in the nearby and high redshift universe in exquisite detail. However, because of the limited areas surveyed, the sample sizes remain relatively sma…
The COSMOS 2-degree HST/ACS survey [review article]
Koekemoer, Anton M.; Scoville, Nick Z.
The COSMOS survey is the largest contiguous imaging project ever undertaken with the Hubble Space Telescope, using ACS/WFC to image a 2 square degree low-background equatorial field in 600 orbits with the F814W ( I) filter. The survey is providing over 2 million objects with a 10σ detection limit AB( I) < 27, with a sky coverage of 10 billion A…
Weak lensing studies from space with GEMS [review article]
Heymans, C.; Taylor, A. N.; Wolf, C. +16 more
The Galaxy Evolution from Morphology and SEDs (GEMS) survey is the largest contiguous field ever imaged in colour by HST with the Advanced Camera for Surveys (ACS), spanning some 900 square arcmins in the Chandra deep field south (CDFS). We discuss the power of the ACS for weak lensing studies and present preliminary results from our cosmic shear …