809 citations · 28.2k across the 927 of their papers we have counts for
33 papers · 1 filter
Seismology of Procyon A: determination of mode frequencies, amplitudes, lifetimes, and granulation noise
S. Leccia, H. Kjeldsen, A. Bonanno +3
The F5 IV-V star Procyon A (aCMi) was observed in January 2001 by means of the high resolution spectrograph SARG operating with the TNG 3.5m Italian telescope (Telescopio Nazionale…
Associated Charmonium Production in Low Energy p-pbar Annihilation
T. Barnes, X. Li
The QCD mechanisms underlying the exclusive strong decays and hadronic production amplitudes of charmonium remain poorly understood, despite decades of study and an increasingly de…
The dependence of quasar variability on black hole mass
M. Wold, M. S. Brotherton, Z. Shang
In order to investigate the dependence of quasar variability on fundamental physical parameters like black hole mass, we have matched quasars from the QUEST1 Variability Survey wit…
Excitation of solar-like oscillations across the HR diagram
R. Samadi, D. Georgobiani, R. Trampedach R. +3
We extend semi-analytical computations of excitation rates for solar oscillation modes to those of other solar-like oscillating stars to compare them with recent observations. Nume…
The evolution of magnetic tower jets in the laboratory
A. Ciardi, S. V. Lebedev, A. Frank +12
The evolution of laboratory produced magnetic jets is followed numerically through three-dimensional, non-ideal magnetohydrodynamic simulations. The experiments are designed to stu…
Evidence of a Metal Rich Galactic Bar from the Vertex Deviation of the Velocity Ellipsoid
Mario Soto, R. Michael Rich, Konrad Kuijken
We combine radial velocities, proper motions, and low resolution abundances for a sample of 315 K and M giants in the Baade's Window (l,b)=(0.9,-4) Galactic bulge field. The veloci…
Theoretical mass loss rates of cool main-sequence stars
V. Holzwarth, M. Jardine
We develop a model for the wind properties of cool main-sequence stars, which comprises their wind ram pressures, mass fluxes, and terminal wind velocities. The wind properties are…
New outbursts of the black hole candidate H1743-322/IGR J17464-3213 observed by INTEGRAL
F. Capitanio, A. Bazzano, P. Ubertini +1
On March 2003, INTEGRAL/IBIS detected an outburst from a new source, IGR J17464-3213, that turned out to be a HEAO-1 transient, namely H1743-322. Its fux decayed below the RXTE PCA…
When do early-type galaxies form?
Roberto G. Abraham, Patrick J. McCarthy, Erin Mentuch +13
We have used the Hubble Space Telescope's Advanced Camera for Surveys to measure the mass density function of morphologically selected early-type galaxies in the Gemini Deep Deep S…
Gravitational lensing by cosmic strings: what we learn from the CSL-1 case
M. V. Sazhin, O. S. Khovanskaya, M. Capaccioli +5
Cosmic strings were postulated by Kibble in 1976 and, from a theoretical point of view, their existence finds support in modern superstring theories, both in compactification model…
The Keck Aperture Masking Experiment: Near-Infrared Sizes of Dusty Wolf-Rayet Stars
J. D. Monnier, P. G. Tuthill, W. C. Danchi +2
We report the results of a high angular resolution near-infrared survey of dusty Wolf-Rayet stars using the Keck-1 Telescope, including new multi-wavelength images of the pinwheel…
New Abundances for Old Stars - Atomic Diffusion at Work in NGC 6397
A. J. Korn, F. Grundahl, O. Richard +5
A homogeneous spectroscopic analysis of unevolved and evolved stars in the metal-poor globular cluster NGC 6397 with FLAMES-UVES reveals systematic trends of stellar surface abunda…
FUSE Spectroscopy of the DAO-type Central Star LS V+4621: Looking for the Photosphere in the Sea of Interstellar Absorption
M. Ziegler, T. Rauch, K. Werner +2
The far-ultraviolet spectrum of the DAO White Dwarf LS V+4621, the exciting star of the possible planetary nebula Sh 2-216,is strongly contaminated by absorption features from the…
HST and FUSE Spectroscopy of the DAO-type Central Star LS V+4621
T. Rauch, M. Ziegler, K. Werner +1
The DAO-type white dwarf LS V+4621 is the hydrogen-rich central star of the possible planetary nebula Sh 2-216. We have taken high-resolution, high-S/N ultraviolet spectra with STI…
A near-infrared spectroscopic detection of the brown dwarf in the post common envelope binary WD0137-349
M. R. Burleigh, E. Hogan, P. D. Dobbie +2
We present a near-infrared spectrum of the close, detached white dwarf + brown dwarf binary WD0137-349 (Maxted et al 2006), that directly reveals the substellar companion through a…
Evaporative cooling in a radio-frequency trap
Carlos L. Garrido Alzar, Hélène Perrin, Barry M. Garraway +1
A theoretical investigation for implementing a scheme of forced evaporative cooling in radio-frequency (rf) adiabatic potentials is presented. Supposing the atoms to be trapped by…
Sensitivity of Type I X-Ray Bursts to rp-Process Reaction Rates
A. Matthew Amthor, Daniel Galaviz, Alexander Heger +3
First steps have been taken in a more comprehensive study of the dependence of observables in Type I X-ray bursts on uncertain (p,gamma) reaction rates along the rp-process path. W…
The XYZs of Charmonium at BES
T. Barnes
This contribution reviews some recent developments in charmonium spectroscopy, and discusses related theoretical predictions. The spectrum of states, strong decays of states above…
A probable stellar solution to the cosmological lithium discrepancy
A. J. Korn, F. Grundahl, O. Richard +5
The measurement of the cosmic microwave background has strongly constrained the cosmological parameters of the Universe. When the measured density of baryons (ordinary matter) is c…
The spin and shape of dark matter haloes in the Millennium simulation of a LambdaCDM universe
Philip Bett, Vincent Eke, Carlos S. Frenk +3
We investigate the spins and shapes of over a million dark matter haloes identified at z=0 in the Millennium simulation. Our sample spans halo masses ranging from dwarf galaxies to…
A Time Delay for the Largest Gravitationally Lensed Quasar: SDSS J1004+4112
J. Fohlmeister, C. S. Kochanek, E. E. Falco +12
We present 426 epochs of optical monitoring data spanning 1000 days from December 2003 to June 2006 for the gravitationally lensed quasar SDSS J1004+4112. The time delay between th…
Discovery of an X-ray Jet and Extended Jet Structure in the Quasar PKS 1055+201
D. A. Schwartz, H. L. Marshall, J. E. J. Lovell +10
This letter reports rich X-ray jet structures found in the Chandra observation of PKS 1055+201. In addition to an X-ray jet coincident with the radio jet we detect a region of exte…
The nature of the close magnetic white dwarf + probable brown dwarf binary SDSS J121209.31+013627.7
M. R. Burleigh, T. R. Marsh, B. T. Gansicke +16
Optical time series photometry of the short period magnetic white dwarf + probable brown dwarf binary SDSS 121209.31+013627.7 reveals pulse-like variability in all bands from i' to…
Potential Neutrino Signals from Galactic Gamma-Ray Sources
Alexander Kappes, Jim Hinton, Christian Stegmann +1
The recent progress made in Galactic gamma-ray astronomy using the High Energy Stereoskopic System (H.E.S.S.) instrument provides for the first time a population of Galactic TeV ga…