AMD 16-core CPUs now shipping

AMD just announced that their 16-core Opteron “Interlagos” processors are now in production.  First they will be shipped to retailers for testing in their platform, and then later in Q4 they will be available to the public.  This is great news for the group because our new 512-core cluster will be based on the Interlagos chips.   We will be placing our order soon and will be waiting for the arrival of the dedicated cluster sometime in December!

07 Sept 2011

  • (abs, pdf) Kruijssen et al., The dynamical state of stellar structure in star-forming regions
  • (abs, pdf) Revaz & Jablonka, The Dynamical and Chemical Evolution of Dwarf Spheroidal Galaxies with GEAR
  • (abs, pdf) Robertson & Ellis, Connecting the Gamma Ray Burst Rate and the Cosmic Star Formation History: Implications for Reionization and Galaxy Evolution
  • (abs, pdf) Bouwens et al., UV-continuum slopes at z~4-7 from the HUDF09+ERS+CANDELS observations: Discovery of a well-defined UV-color magnitude relationship for z>=4 star-forming galaxies
  • (abs, pdf) Nayakshin et al., Are SMBHs shrouded by “Super-Oort” clouds of comets and asteroids?

Cover image on Science News

Let’s start out the news feed with something big.  A fantastic rendering of one of our simulations made the July 30th cover of Science News!  The associated article does an excellent job in describing the current state of the field.  This beautiful visualization was created by Ralf Kaehler at SLAC.  The featured simulation shows a Population III star at the end of its 3 Myr life.  Most of the surrounding gas is heated to 30,000 K, shown in red, whereas the dense gas associated with nearby halos shield against the stellar radiation and survive this blast of radiation.  The HII region that is created is over-pressurized and drives a 30 km/s shock from the star.  Because the host dark matter halo is only 1 million solar masses, its escape velocity is 3 km/s.  Over 90% of the gas is expelled from the halo, delaying further star formation and having possible consequences on the first galaxy.  This is clearly seen in the expanding, clumpy shell, centered on the star.

02 Sept 2011

  • (abs, pdf) Riebe et al., The MultiDark Database: Release of the Bolshoi and MultiDark Cosmological Simulations
  • (abs, pdf) de la Rosa et al., The link between the Star Formation History and [alpha/Fe]
  • (abs, pdf) Hibon et al., Search for z~6.96 Ly-alpha emitters with Magellan/IMACS in the COSMOS field
  • (abs, pdf) Jiang et al., Keck Spectroscopy of Lyman-break Galaxies and its Implications for the UV-continuum and Ly_alpha Luminosity Functions at z>6
  • (abs, pdf) Li et al., Cosmological evolution of supermassive black holes. I. mass function at 0<z<2
  • (abs, pdf) Forero-Romero et al., Modelling the fraction of Lyman Break Galaxies with strong Lyman alpha emission at 5 < z < 7