Browsing Physics & Atmospheric Science by Title
Now showing items 431-450 of 532
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Spin-dependent transport in Fe and Fe/Au multilayers
(APS through AIP, 2005-06/01)In situ resistance measurements of epitaxial Fe layers and Au/Fe bilayers were used to quantify the scattering in giant magnetoresistance (GMR) spin valve structures. The semiclassical Boltzmann transport equation, ... -
Spitzer identifications and classifications of submillimeter galaxies in giant, high-redshift Lyman-alpha emission-line nebulae
(2007-01-20)Using Spitzer Space Telescope IRAC (3.6-8um) and MIPS (24um) imaging, as well as Hubble Space Telescope optical observations, we identify the IRAC counterparts of the luminous power sources residing within the two largest ... -
The Spitzer Space Telescope Extra-Galactic First Look Survey: 24 micron data reduction, catalog, and source identification
(2006-06)We present the reduction of the 24 micron data obtained during the first cosmological survey performed by the Spitzer Space Telescope (First Look Survey, FLS). The survey consists of a shallow observation of 2.5x2 sq deg ... -
The spring 2011 final stratospheric warming above Eureka: anomalous dynamics and chemistry
(2013)No abstract available. -
SPT 0538-50: Physical conditions in the ISM of a strongly lensed dusty star-forming galaxy at z=2.8
(2013-09-12)We present observations of SPT-S J053816-5030.8, a gravitationally-lensed dusty star forming galaxy (DSFG) at z = 2.7817, first discovered at millimeter wavelengths by the South Pole Telescope. SPT 0538-50 is typical of ... -
The Star Formation History and Dust Content in the Far Outer Disc of M31
(2011-11-22)We present a detailed analysis of two fields located 26 kpc (~5 scalelengths) from the centre of M31. One field samples the major axis populations--the Outer Disc field--while the other is offset by ~18' and samples the ... -
Steady-state helices of the actin homolog MreB inside bacteria: dynamics without motors
(2007-09)Within individual bacteria, we combine force-dependent polymerization dynamics of individual MreB protofilaments with an elastic model of protofilament bundles buckled into helical configurations. We use variational ... -
The stellar halo and outer disk of M33
(2006-08-10)We present first results from a Keck/DEIMOS spectroscopic survey of red giant branch (RGB) stars in M33. The radial velocity distributions of the stars in our fields are well described by three Gaussian components, ... -
The Stellar Mass Content of Submillimeter-Selected Galaxies
(2010-06-01)We present a new study of the stellar mass in a sample of ~ 70 submillimeter-selected galaxies (SMGs) with accurate spectroscopic redshifts. We fit combinations of stellar population synthesis models and power laws to the ... -
Strangers in the night: Discovery of a dwarf spheroidal galaxy on its first Local Group infall
(2007-06-20)We present spectroscopic observations of the AndXII dwarf spheroidal galaxy using DEIMOS/Keck-II, showing it to be moving rapidly through the Local Group (-556 km/s heliocentric velocity, -281 km/s relative to Andromeda ... -
Stratospheric versus pollution influences on ozone at Bermuda: Reconciling past analyses
(2002-11)No abstract available. -
Stretching, Unfolding, and Deforming Protein Filaments Adsorbed at Solid-Liquid Interfaces Using the Tip of an Atomic-Force Microscope
(2009-03)No abstract available. -
Strongly anisotropic band dispersion of an image state located above metallic nanowires
(1999-03)Indium can be grown on Si(111) in a 4 x I pattern that contains rows of In atoms spaced 13.3 Angstrom apart that have quasi-one-dimensional electronic structure. This ordered array of metallic wires produces an image-induced ... -
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Structure and magnetic properties of MnSi epitaxial thin films
(American Physical Society, 2010-11/01)We report on the correlation between the magnetic and structural properties of epitaxial MnSi (111) thin films grown by solid-phase epitaxy on Si (111) substrates. The Si (111) substrate, with a surface unit cell that is ... -
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The structure of star clusters in the outer halo of M31
(2012-02-09)We present a structural analysis of halo star clusters in M31 based on deep Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) imaging. The clusters in our sample span a range in galactocentric projected distance ...