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234 papers · 1 filter

hep-ex2005★ 13 cited

Measurements of the branching fractions and CP-asymmetries of B- --> D0_(CP) K- decays

The BABAR Collaboration, B. Aubert

We present a study of the decay B- --> D0_(CP) K- and its charge conjugate, where D0_(CP) is reconstructed in CP-even, CP-odd, and non-CP flavor eigenstates, based on a sample of 2…

astro-ph2005★ 71 cited

On the 2:1 Orbital Resonance in the HD 82943 Planetary System

Man Hoi Lee, R. Paul Butler, Debra A. Fischer +2

We present an analysis of the HD 82943 planetary system based on a radial velocity data set that combines new measurements obtained with the Keck telescope and the CORALIE measurem…

hep-ex2005★ 10 cited

Search for rare quark-annihilation decays, B --> Ds(*) Phi

The BABAR Collaboration, B. Aubert

We report on searches for B- --> Ds- Phi and B- --> Ds*- Phi. In the context of the Standard Model, these decays are expected to be highly suppressed since they proceed through ann…

hep-ph2005★ 233 cited

Supersymmetry Parameter Analysis: SPA Convention and Project

J. A. Aguilar-Saavedra, A. Ali, B. C. Allanach +122

High-precision analyses of supersymmetry parameters aim at reconstructing the fundamental supersymmetric theory and its breaking mechanism. A well defined theoretical framework is…

astro-ph2005★ 85 cited

Kinematics and Metallicity of M31 Red Giants: The Giant Southern Stream and Discovery of a Second Cold Component at R = 20 kpc

J. S. Kalirai, P. Guhathakurta, K. M. Gilbert +4

We present spectroscopic observations of red giant branch (RGB) stars in the Andromeda spiral galaxy (M31), acquired with the DEIMOS instrument on the Keck II 10-m telescope. The t…

astro-ph2005★ 27 cited

GRB 050408: An Atypical Gamma-Ray Burst as a Probe of an Atypical Galactic Environment

R. J. Foley, D. A. Perley, D. Pooley +14

The bright GRB 050408 was localized by HETE-II near local midnight, enabling an impressive ground-based followup effort as well as space-based followup from Swift. The Swift data f…

gr-qc2005★ 49 cited

Two Tunnels to Inflation

Anthony Aguirre, Matthew C. Johnson

We investigate the formation via tunneling of inflating (false-vacuum) bubbles in a true-vacuum background, and the reverse process. Using effective potentials from the junction co…

astro-ph2005★ 628 cited

The Mass Assembly History of Field Galaxies: Detection of an Evolving Mass Limit for Star Forming Galaxies

Kevin Bundy, Richard S. Ellis, Christopher J. Conselice +7

We characterize the mass-dependent evolution in a large sample of more than 8,000 galaxies using spectroscopic redshifts drawn from the DEEP2 Galaxy Redshift Survey in the range 0.…

astro-ph2005★ 310 cited

On the Origin of [OII] Emission in Red Sequence and Post-starburst Galaxies

Renbin Yan, Jeffrey A. Newman, S. M. Faber +3

We investigate the emission-line properties of galaxies with red rest-frame colors using spectra from SDSS DR4. Emission lines are detected in more than half of the red galaxies. W…

astro-ph2005★ 571 cited

The Dependence of Halo Clustering on Halo Formation History, Concentration, and Occupation

Risa H. Wechsler, Andrew R. Zentner, James S. Bullock +2

We investigate the dependence of dark matter halo clustering on halo formation time, density profile concentration, and subhalo occupation number, using high-resolution numerical s…

astro-ph2005★ 126 cited

The DEEP2 Galaxy Redshift Survey: Clustering of Galaxies as a Function of Luminosity at z=1

Alison L. Coil, Jeffrey A. Newman, Michael C. Cooper +4

We measure the clustering of DEEP2 galaxies at z=1 as a function of luminosity on scales 0.1 Mpc/h to 20 Mpc/h. Drawing from a parent catalog of 25,000 galaxies at 0.7<z<1.3 in the…

astro-ph2005★ 47 cited

High Metallicity, Photoionised Gas in Intergalactic Large-Scale Filaments

Bastien Aracil, Todd M. Tripp, David V. Bowen +3

We present high-resolution UV spectra of absorption-line systems toward the low-z QSO HS0624+6907 (z=0.3700). Coupled with spectroscopic galaxy redshifts, we find that many of thes…

astro-ph2005★ 34 cited

Deep Photometry of Andromeda Reveals Striking Similarities in the Tidal Stream and Spheroid Populations

Thomas M. Brown, Ed Smith, Puragra Guhathakurta +5

We present a color-magnitude diagram (CMD) for a field in the giant tidal stream of the Andromeda galaxy (M31). These observations, taken with the Advanced Camera for Surveys on th…

astro-ph2005★ 52 cited

Angular Momentum Transport by Gravity Waves in the Solar Interior

Tamara M. Rogers, Gary A. Glatzmaier

We present self-consistent numerical simulations of the sun's convection zone and radiative interior using a two-dimensional model of its equatorial plane. The background reference…

astro-ph2005★ 84 cited

An Overdensity of Galaxies near the Most Distant Radio-Loud Quasar

W. Zheng, R. Overzier, R. J. Bouwens +41

A five square arcminute region around the luminous radio-loud quasar SDSS J0836+0054 (z=5.8) hosts a wealth of associated galaxies, characterized by very red (1.3 < i_775 - z_{850}…

astro-ph2005★ 16 cited

Cosmic rays, lithium abundance and excess entropy in galaxy clusters

Biman B. Nath, Piero Madau, Joseph Silk

We consider the production of Li in spallation reactions by cosmic rays in order to explain the observed abundance in halo metal-poor stars. We show that heating of ambient gas…

astro-ph2005★ 36 cited

The Evolution of Rest-Frame K-band Properties of Early-Type Galaxies from z=1 to the Present

A. van der Wel, M. Franx, P. G. van Dokkum +3

We measure the evolution of the rest-frame K-band Fundamental Plane from z=1 to the present by using IRAC imaging of a sample of early-type galaxies in the Chandra Deep Field-South…

astro-ph2005★ 36 cited

Measurement of the Spatial Cross-Correlation Function of Damped Lyman Alpha Systems and Lyman Break Galaxies

J. Cooke, A. M. Wolfe, E. Gawiser +1

We present the first spectroscopic measurement of the spatial cross-correlation function between damped Lyman alpha systems (DLAs) and Lyman break galaxies (LBGs). We obtained deep…

astro-ph2005★ 68 cited

Gemini/GMOS Spectra of Globular Clusters in the Leo Group Elliptical NGC 3379

Michael Pierce, Michael A. Beasley, Duncan A. Forbes +8

We have obtained Gemini/GMOS spectra for 22 GCs associated with NGC 3379. We derive ages, metallicities and alpha-element abundance ratios from simple stellar population models usi…

astro-ph2005★ 24 cited

Mid-Infrared Emission from Elliptical Galaxies: Sensitivity to Stellar Age

Pasquale Temi, Fabrizio Brighenti, William G. Mathews

Mid-infrared observations (3.6 - 24 microns) of normal giant elliptical galaxies with the Spitzer space telescope are consistent with pure populations of very old stars with no evi…

astro-ph2005★ 94 cited

Millihertz Quasi-Periodic Oscillations from Marginally Stable Nuclear Burning on an Accreting Neutron Star

Alexander Heger, Andrew Cumming, Stanford E. Woosley

We investigate marginally stable nuclear burning on the surface of accreting neutron stars as an explanation for the mHz quasi-periodic oscillations (QPOs) observed from three low…

astro-ph2005★ 246 cited

Nucleosynthesis in Early Supernova Winds II: The Role of Neutrinos

J. Pruet, R. D. Hoffman, S. E. Woosley +2

One of the outstanding unsolved riddles of nuclear astrophysics is the origin of the so called ``p-process'' nuclei from A = 92 to 126. Both the lighter and heavier p-process nucle…

astro-ph2005★ 18 cited

Baryonically Closed Galaxy Groups

W. G. Mathews, A. Faltenbacher, F. Brighenti +1

Elliptical galaxies and their groups having the largest L_x/L_B lie close to the locus in the L_x,L_B diagram expected for closed systems with baryon fractions equal to the cosmic…

astro-ph2005★ 91 cited

Heating Cooling Flows with Weak Shock Waves

W. G. Mathews, A. Faltenbacher, F. Brighenti

The discovery of extended, approximately spherical weak shock waves in the hot intercluster gas in Perseus and Virgo has precipitated the notion that these waves may be the primary…