Browsing Physics & Atmospheric Science by Title
Now showing items 274-293 of 532
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Mapping the Clumpy Structures within Submillimeter Galaxies using Laser-Guide Star Adaptive Optics Spectroscopy
(2013-02-08)We present the first integral-field spectroscopic observations of high-redshift submillimeter-selected galaxies (SMGs) using Laser Guide Star Adaptive Optics (LGS-AO). We target H-alpha emission of three SMGs at redshifts ... -
The masses of Local Group dwarf spheroidal galaxies: The death of the universal mass profile
(2013-09-12)We investigate the claim that all dwarf spheroidal galaxies (dSphs) reside within halos that share a common, universal mass profile as has been derived for dSphs of the Galaxy. By folding in kinematic information for 25 ... -
Maximally fast coarsening algorithms
(2005-11)We present maximally fast numerical algorithms for conserved coarsening systems that are stable and accurate with a growing natural time step Deltat=At2/3s. We compare the scaling structure obtained from our maximally fast ... -
Measurement of the Sunyaev-Zel'dovich Increment in Massive Galaxy Clusters
(2003-12)We have detected the Sunyaev-Zel'dovich (SZ) increment at 850 microns in two galaxy clusters (Cl 0016+16 and MS 1054.4-0321) using SCUBA (Sub-millimetre Common User Bolometer Array) on the James Clerk Maxwell Telescope. ... -
Measurements and Analysis of Neutron Elastic-Scattering at 65 Mev
(1994-07)No abstract available. -
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Mid- to far infrared properties of star-forming galaxies and active galactic nuclei
(2013-2013-)We study the mid- to far-IR properties of a 24um-selected flux-limited sample (S24 > 5mJy) of 154 intermediate redshift (~0.15), infrared luminous galaxies, drawn from the 5MUSES survey. By combining existing mid-IR ... -
A Mid-Infrared Imaging Survey of Submillimeter-Selected Galaxies with the Spitzer Space Telescope
(2009)We present <I>Spitzer</I>-IRAC and MIPS mid-IR observations of a sample of 73 radio-detected submillimeter-selected galaxies (SMGs) with spectroscopic redshifts, the largest such sample published to date. From our data, ... -
Mid-Infrared Spectroscopy of High Redshift Submillimeter Galaxies: First Results
(2007-02-01)We present mid-infrared spectra of 5 submillimeter galaxies at z=0.65-2.38 taken with the Spitzer Space Telescope. Four of these sources, at z<1.5, have strong PAH features and their composite spectrum is well fitted ... -
Mid-Infrared Spectroscopy of Submillimeter Galaxies: Extended Star Formation in Massive High Redshift Galaxies
(2009-03-24)We used the Spitzer Infrared Spectrograph (IRS) to study the mid-IR properties and investigate the energetics of 24 Submillimeter Galaxies (SMGs). This is the largest sample of SMGs observed with Spitzer IRS and covers the ... -
Modeling the evolution of infrared luminous galaxies: the influence of the Luminosity-Temperature distribution
(2005-03)The evolution of the luminous infrared galaxy population is explored using a pure luminosity evolution model which incorporates the locally observed luminosity-temperature distribution for IRAS galaxies. Pure luminosity ... -
Molecular Gas in Submillimetre-Faint, Star-Forming Ultraluminous Galaxies at z>1
(2009-10-30)[abridged] We present interferometric CO observations of twelve z~2 submillimetre-faint, star-forming radio galaxies (SFRGs) which are thought to be ultraluminous infrared galaxies (ULIRGs) possibly dominated by warmer ... -
Monodisperse domains by proteolytic control of the coarsening instability
(American Physical Society, 2011)The coarsening instability typically disrupts steady-state cluster-size distributions. We show that degradation coupled to the cluster size, such as arising from biological proteolysis, leads to a fixed-point cluster size. ... -
Mossbauer-Effect Investigation of the Pentagonal Approximant Phase in the Fe-Nb System
(1994-11)No abstract available. -
Most Submillimetre Galaxies are Major Mergers
(2010-09-13)We analyse subarcsecond resolution interferometric CO line data for twelve sub-millimetre-luminous (S850um > 5mJy) galaxies with redshifts between 1 and 3, presenting new data for four of them. Morphologically and kinematically ... -
Motion of a point dipole in an infinite hole through a superconductor
(1993-08/01)The authors consider the system of a magnetic point dipole placed in an infinite square hole through a superconductor. Using the method of images they obtain the potential and the field distribution in the hollow. Using ... -
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The nature of a gravitationally lensed sub-millimetre arc in MS0451.6-0305: two interacting galaxies at z~2.9?
(2004-08-11)We present a new SCUBA image of the cluster MS0451.6-0305, which exhibits strong, extended sub-mm flux at 850 microns. The most striking feature in the map is an elongated region of bright sub-mm emission, with a flux ...