Search Publications
Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the First 720 Square Degrees of the South Pole Telescope Survey
Gladders, M. D.; Rest, A.; Foley, R. J. +77 more
We present a catalog of galaxy cluster candidates, selected through their Sunyaev-Zel'dovich (SZ) effect signature in the first 720 deg2 of the South Pole Telescope (SPT) survey. This area was mapped with the SPT in the 2008 and 2009 austral winters to a depth of ~18 µKCMB-arcmin at 150 GHz 550 deg2 of it was…
HerMES: Cosmic Infrared Background Anisotropies and the Clustering of Dusty Star-forming Galaxies
Aussel, H.; Pérez-Fournon, I.; Valtchanov, I. +51 more
We present measurements of the auto- and cross-frequency power spectra of the cosmic infrared background (CIB) at 250, 350, and 500 µm (1200, 860, and 600 GHz) from observations totaling ~70 deg2 made with the SPIRE instrument aboard the Herschel Space Observatory. We measure a fractional anisotropy δI/I = 14% ± 4%, detecting sign…
The Atacama Cosmology Telescope: Dynamical Masses and Scaling Relations for a Sample of Massive Sunyaev-Zel'dovich Effect Selected Galaxy Clusters
Hilton, Matt; Hasselfield, Matthew; Sifón, Cristóbal +33 more
We present the first dynamical mass estimates and scaling relations for a sample of Sunyaev-Zel'dovich effect (SZE) selected galaxy clusters. The sample consists of 16 massive clusters detected with the Atacama Cosmology Telescope (ACT) over a 455 deg2 area of the southern sky. Deep multi-object spectroscopic observations were taken to …
The Herschel and JCMT Gould Belt Surveys: Constraining Dust Properties in the Perseus B1 Clump with PACS, SPIRE, and SCUBA-2
Bernard, J. -P.; Hill, T.; André, Ph. +29 more
We present Herschel observations from the Herschel Gould Belt Survey and SCUBA-2 science verification observations from the JCMT Gould Belt Survey of the B1 clump in the Perseus molecular cloud. We determined the dust emissivity index using four different techniques to combine the Herschel PACS+SPIRE data at 160-500 µm with the SCUBA-2 data …
Changes of Dust Opacity with Density in the Orion A Molecular Cloud
Arzoumanian, Doris; Di Francesco, James; André, Philippe +12 more
We have studied the opacity of dust grains at submillimeter wavelengths by estimating the optical depth from imaging at 160, 250, 350, and 500 µm from the Herschel Gould Belt Survey and comparing this to a column density obtained from the Two Micron All Sky Survey derived color excess E(J - K s). Our main goal was to investigate t…
The Atacama Cosmology Telescope: Relation between Galaxy Cluster Optical Richness and Sunyaev-Zel'dovich Effect
Hilton, Matt; Hasselfield, Matthew; Sifón, Cristóbal +33 more
We present the measured Sunyaev-Zel'dovich (SZ) flux from 474 optically selected MaxBCG clusters that fall within the Atacama Cosmology Telescope (ACT) Equatorial survey region. The ACT Equatorial region used in this analysis covers 510 deg2 and overlaps Stripe 82 of the Sloan Digital Sky Survey. We also present the measured SZ flux sta…
Suzaku Observations of the Outskirts of A1835: Deviation from Hydrostatic Equilibrium
Zhang, Y. -Y.; Finoguenov, A.; Sato, Kosuke +12 more
We present results of four-pointing Suzaku X-ray observations (total ~200 ks) of the intracluster medium (ICM) in the A1835 galaxy cluster (kT ~ 8 keV, z = 0.253) out to the virial radius (r vir ~ 2.9 Mpc) and beyond. Faint X-ray emission from the ICM out to r vir is detected. The temperature gradually decreases with radius f…
Herschel Observations of the W3 GMC: Clues to the Formation of Clusters of High-mass Stars
Martin, P. G.; Hill, T.; White, G. J. +22 more
The W3 GMC is a prime target for the study of the early stages of high-mass star formation. We have used Herschel data from the HOBYS key program to produce and analyze column density and temperature maps. Two preliminary catalogs were produced by extracting sources from the column density map and from Herschel maps convolved to 500 µm resol…
Gaseous CO Abundance—An Evolutionary Tracer for Molecular Clouds
Liu, Tie; Wu, Yuefang; Zhang, Huawei
Planck cold clumps are among the most promising objects to investigate the initial conditions of the evolution of molecular clouds. In this work, by combing the dust emission data from the survey of the Planck satellite with the molecular data of 12CO/13CO/C18O (1-0) lines from observations with the Purple Mountain…
Complex Diffuse Radio Emission in the Merging Planck ESZ Cluster A3411
van Weeren, R. J.; Forman, W. R.; Murray, S. S. +7 more
We present Very Large Array (VLA) radio and Chandra X-ray observations of the merging galaxy cluster A3411. For the cluster, we find an overall temperature of 6.4^{+0.6}_{-1.0} keV and an X-ray luminosity of 2.8 ± 0.1 × 1044 erg s-1 between 0.5 and 2.0 keV. The Chandra observation reveals the cluster to be undergoing a merger…