Context. Observations of intergalactic neutral hydrogen can provide a wealth of information about structure and galaxy formation, potentially tracing accretion and feedback processes on Mpc scales. Below a column density of N HI ∼ 10 19 cm −2 , the " edge " or typical observational limit for H i emission from galaxies, simulations predict a cosmic web of extended emission and filamentary struct...

Submitted for the MAR11 Meeting of The American Physical Society Mesoscopic Anderson Box: Connecting Weak to Strong Coupling DONG E. LIU, Duke University, SEBASTIEN BURDIN, Univ. of Bordeaux I, France, HAROLD U. BARANGER, Duke University, DENIS ULLMO, Univ. Paris Sud, France — Both the weakly coupled and strong coupling Anderson impurity problem are characterized by a Fermi-liquid theory with w...

Context. Several clusters of red supergiants have been discovered in a small region of the Milky Way close to the base of the ScutumCrux Arm and the tip of the Long Bar. Population synthesis models indicate that they must be very massive to harbour so many supergiants. Amongst these clusters, Stephenson 2, with a core grouping of 26 red supergiants, is a strong candidate to be the most massive ...

COBBER (ClOud OBservER), is a mid-infrared sky monitor featuring a 10μm Perkin-Elmer TPS534 thermopile detector. Radiation is focussed on to the detector through an anti-reflection coated, hemispherical ZnSe lens, providing a 30◦ field of view on the sky. At 10cm in length and 4cm diameter, the tiny cloud monitor was designed for ease of transportation and an extremely low power budget. Run in ...