Trans-Debye Scale Plasma Modeling & Stochastic GRB Wakefield Plasma ProcessesModeling plasma physical processes in astrophysical context demands for both detailed kinetics and large scale development of the electromagnetic field densities. We present a new framework for…J. Trier Frederiksen, T. Haugboelle, A. Nordlund·Aug 6, 2008SaveLearn
Chemical mixing in smoothed particle hydrodynamics simulationsWe introduce a simple and efficient algorithm for diffusion in smoothed particle hydrodynamics (SPH) simulations and apply it to the problem of chemical mixing. Based on the concept of turbulent…Thomas H. Greif, Simon C. O. Glover, Volker Bromm et al.·Aug 6, 2008SaveLearn
Injection to the pick-up ion regime from high energies and induced ion power lawsThough pick-up ions (PUIs) are a well known phenomenon in the inner heliosphere their phase-space distribution nevertheless is a theoretically unsettled problem. Especially the question of how…H. -J. Fahr, I. V. Chashei, D. Verscharen·Aug 6, 2008SaveLearn
RoboNet-II: Follow-up observations of microlensing events with a robotic network of telescopesRoboNet-II uses a global network of robotic telescopes to perform follow-up observations of microlensing events in the Galactic Bulge. The current network consists of three 2m telescopes located in…Y. Tsapras, R. Street, K. Horne et al.·Aug 6, 2008SaveLearn
A Necessary Condition for Individual Time-Steps in SPH SimulationsWe show that the smoothed particle hydrodynamics (SPH) method, used with individual time-steps in the way described in the literature, cannot handle strong explosion problems correctly. In the…Takayuki R. Saitoh, Junichiro Makino·Aug 6, 2008SaveLearn
Rapidly spinning massive black holes in active galactic nuclei: evidence from the black hole mass functionThe comparison of the black hole mass function (BHMF) of active galactic nuclei (AGN) relics with the measured mass function of the massive black holes in galaxies provides strong evidence for the…Xinwu Cao, Fan Li·Aug 6, 2008SaveLearn
The kinematic footprints of five stellar streams in Andromeda's halo(abridged) We present a spectroscopic analysis of five stellar streams (`A', `B', `Cr', `Cp' and `D') as well as the extended star cluster, EC4, which lies within streamC, all…S. C. Chapman, R. Ibata, M. Irwin et al.·Aug 6, 2008SaveLearn
A New FUSE Survey of Interstellar HDWe have used archival FUSE data to complete a survey of interstellar HD in 41 lines of sight with a wide range of extinctions. This follow up to an earlier survey was made to further assess the…Theodore P. Snow, Teresa L. Ross, Joshua D. Destree et al.·Aug 6, 2008SaveLearn
Spectroscopy of globular clusters in the low-luminosity spiral galaxy NGC 45CONTEXT: Extragalactic globular clusters have been studied in elliptical galaxies and in a few luminous spiral galaxies, but little is known about globular clusters in low-luminosity spirals. AIMS:…Marcelo D. Mora, Soeren S. Larsen, Markus Kissler-Patig·Aug 6, 2008SaveLearn
Host Galaxies of Luminous Quasars: Structural Properties and the Fundamental PlaneWe present stellar velocity dispersion measurements in the host galaxies of 10 luminous quasars (MV < -23) using the Ca H&K lines in off-nuclear spectra. We combine these data with effective radii…Marsha J. Wolf, Andrew I. Sheinis·Aug 6, 2008SaveLearn
Hubble Space Telescope Spectroscopic Observations of the Narrow-Line Region in Nearby Low-Luminosity Active Galactic Nuclei(Abridged) We present STIS observations of 14 nearby low-luminosity active galactic nuclei, including 13 LINERs and 1 Seyfert, taken at multiple parallel slit positions centered on the galaxy nuclei…Jonelle L. Walsh, Aaron J. Barth, Luis C. Ho et al.·Aug 6, 2008SaveLearn
Ultraluminous X-ray Sources and Their NebulaeOne of the interesting features of Ultraluminous X-ray sources is that many of them are surrounded by luminous nebulae exhibiting diverse observational properties. In different cases the nebulae are…Pavel Abolmasov·Aug 6, 2008SaveLearn
Kinematics and physical properties of Southern interacting galaxies: the minor merger AM 2306-721We present an observational study about the effects of the interactions in the kinematics, stellar population and abundances of the components of the galaxy pair AM2306-721. Rotation curves for the…A. C. Krabbe, M. G. Pastoriza, Claudia Winge et al.·Aug 6, 2008SaveLearn
Interstellar Krypton Abundances: The Detection of Kiloparsec-scale Differences in Galactic Nucleosynthetic HistoryWe present an analysis of Kr I 1236 line measurements from 50 sight lines in the Hubble Space Telescope Space Telescope Imaging Spectrograph and Goddard High Resolution Spectrograph data archives…Stefan I. B. Cartledge, J. T. Lauroesch, David M. Meyer et al.·Aug 6, 2008SaveLearn
Thermal inertia of main belt asteroids smaller than 100 km from IRAS dataRecent works have shown that the thermal inertia of km-sized near-Earth asteroids (NEAs) is more than two orders of magnitude higher than that of main belt asteroids (MBAs) with sizes (diameters)…Marco Delbo, Paolo Tanga·Aug 6, 2008SaveLearn
A Chandra Look at Five of the Broadest Double-Peaked Balmer-Line EmittersWe study the 0.5-10keV emission of a sample of five of the broadest double-peaked Balmer-line emitters with Chandra. The Balmer lines of these objects originate close (within a few hundred…Iskra V. Strateva, W. N. Brandt, Michael Eracleous et al.·Aug 6, 2008SaveLearn
The Multiplicity of Main Sequence Turnoffs in Globular ClustersWe present color-magnitude diagrams of globular clusters for models with self-enrichment and pre-enrichment. The models with self-enrichment turn out to have two or more main sequence turnoff points…M. V. Ryabova, Yu. A. Shchekinov·Aug 6, 2008SaveLearn
A Model Of Inflationary Cosmology Without SingularityIn this letter, we propose a model of inflationary cosmology with a bounce preceded and study its primordial curvature perturbations. Our model gives rise to a primordial power spectrum with a…Yi-Fu Cai, Tao-tao Qiu, Jun-Qing Xia et al.·Aug 6, 2008SaveLearn
Evolution and nucleosynthesis in low mass Asymptotic Giant Branch starsPeople usually smile when astrophysicists assert that we are sons of the stars, but human life confirms this sentence: about 65% of the mass of our body is made up of oxygen, carbon occurs in all…S. Cristallo·Aug 6, 2008SaveLearn
Self-Regulated Fueling of Galaxy Centers: Evidence for Star-Formation Feedback in IC342's NucleusUsing new, high-resolution interferometric observations of the CO and HCN molecules, we directly compare the molecular and ionized components of the interstellar medium in the center of the nearby…E. Schinnerer, T. Boeker, D. S. Meier et al.·Aug 6, 2008SaveLearn
R&D progress on second-generation crystals for Laue lens applicationsThe concept of a gamma-ray telescope based on a Laue lens offers the possibility to increase the sensitivity by more than an order of magnitude with respect to existing instruments. Laue lenses have…N. Barrière, P. von Ballmoos, P. Bastie et al.·Aug 6, 2008SaveLearn
The correlation of black hole mass with metallicity index of host spheroidWe investigate the correlation between the mass of the supermassive black holes (SMBHs) and metal abundance, using existing data sets. The SMBH mass Mbh is well correlated with integrated…Shota Kisaka, Yasufumi Kojima, Yosuke Otani·Aug 6, 2008SaveLearn
The properties of penumbral microjets inclinationWe investigate the dependence of penumbral microjets inclination on the position within penumbra. The high cadence observations taken on 10 November 2006 with the Hinode satellite through the…J. Jurcak, Y. Katsukawa·Aug 6, 2008SaveLearn
Proper Motions and Brightness Variations of Nonthermal X-ray Filaments in the Cassiopeia A Supernova RemnantWe present Chandra ACIS X-ray observations of the Galactic supernova remnant Cassiopeia A taken in December 2007. Combining these data with previous archival Chandra observations taken in 2000, 2002,…Daniel J. Patnaude, Robert A. Fesen·Aug 5, 2008SaveLearn
Hydrodynamical Adaptive Mesh Refinement Simulations of Disk GalaxiesTo date, fully cosmological hydrodynamic disk simulations to redshift zero have only been undertaken with particle-based codes, such as GADGET, Gasoline, or GCD+. In light of the (supposed)…Brad K. Gibson, Stephanie Courty, Patricia Sanchez-Blazquez et al.·Aug 5, 2008SaveLearn