A new view of galaxy evolution

A New View of Galaxy Evolution from Submillimeter Surveys with SCUBA

Our view of galaxy evolution has been dramatically enhanced by the recent deep field submm surveys carried out with the SCUBA camera on the JCMT. SCUBA has discovered a population of luminous infrared galaxies at redshifts ∼ 1– 4 that emit most of their energy at far-IR/submm wavelengths. The cumulative surface density of submm sources (∼ 10 deg with S850 > 1mJy) appears to be sufficient to acc...

Cluster Galaxy Evolution from a New Sample of Galaxy Clusters at 0.3 < Z < 0.9

We analyze photometry and spectroscopy of a sample of 63 clusters at 0.3 ≤ z ≤ 0.9 drawn from the Las Campanas Distant Cluster Survey to empirically constrain models of cluster galaxy evolution. Specifically, 1) by combining I−band photometry of 44 of our clusters with that of 19 clusters from the literature (Aragon-Salamanca et al. ; Smail et al. ; Stanford et al. ) we parameterize the redshif...

Genomics. Sea anemone provides a new view of animal evolution.

C R E D IT : A D A M R E IT Z E L Genome sequencers have just jumped down to a lower branch on the tree of life, and the view has given them a new perspective on animal evolution. The newly decoded DNA of a few-centimeter-tall sea anemone looks surprisingly similar to our own, a team led by Nicholas Putnam and Daniel Rokhsar from the U.S. Department of Energy Joint Genome Institute in Walnut Cr...

A complete view of galaxy evolution: panchromatic luminosity functions and the generation of metals

When and how did galaxies form and their metals accumulate? Over the last decade, this has moved from an archeological question to a live investigation: there is now a broad picture of the evolution of galaxies in dark matter halos: their masses, stars, metals and supermassive blackholes. Galaxies have been found and studied in which these formation processes are taking place most vigorously, a...

Galaxy Evolution