An external-shock origin of the Ep-Egamma relation for Gamma-Ray BurstsWe investigate the possibility that the Ep propto Egamma1/2 relation between the peak energy Ep of the nuFnu spectrum and energy output Egamma for long-duration GRBs arises from the external…A. Panaitescu·Nov 13, 2008SaveLearn
Observational constraints of a Milne UniverseThe Standard Model of cosmology states a surprising composition of the Universe, in which ordinary matter accounts for less than 5%. The remaining 95% are composed of ~70% Dark Energy and ~25% Dark…A. Benoit-Lévy, G. Chardin·Nov 13, 2008SaveLearn
Determining properties of the Antennae system - Merging ability for restricted N-bodyMotivated by the closest major merger, the Antennae Galaxies (NGC4038/4039), we want to improve our genetic algorithm based modeling code Minga (Theis 1999). The aim is to reveal the major…Hanns P. Petsch, Christian Theis·Nov 13, 2008SaveLearn
Submillimeter narrow emission lines from the inner envelope of IRC+10216A spectral-line survey of IRC+10216 in the 345 GHz band has been undertaken with the Submillimeter Array. Although not yet completed, it has already yielded a fairly large sample of narrow molecular…Nimesh A. Patel, Ken H. Young, Sandra Brünken et al.·Nov 13, 2008SaveLearn
The flattening and the orbital structure of early-type galaxies and collisionless N-body binary disk mergersWe use oblate axisymmetric dynamical models including dark halos to determine the orbital structure of intermediate mass to massive Coma early-type galaxies. We find a large variety of orbital…J. Thomas, R. Jesseit, R. P. Saglia et al.·Nov 13, 2008SaveLearn
Tidally-induced thermonuclear SupernovaeWe discuss the results of 3D simulations of tidal disruptions of white dwarfs by moderate-mass black holes as they may exist in the cores of globular clusters or dwarf galaxies. Our simulations…S. Rosswog, E. Ramirez-Ruiz, W. R. Hix·Nov 13, 2008SaveLearn
Searching for white dwarfs candidates in Sloan Digital Sky Survey DataLarge amount of observational spectroscopic data are recently available from different observational projects, like Sloan Digital Sky Survey. It's become more urgent to identify white dwarfs…Mirosław Należyty, Agnieszka Majczyna, Anna Ciechanowska et al.·Nov 13, 2008SaveLearn
The Correlated Colors of Transneptunian BinariesWe report resolved photometry of the primary and secondary components of 23 transneptunian binaries obtained with the Hubble Space Telescope. V-I colors of the components range from 0.7 to 1.5 with a…S. D. Benecchi, K. S. Noll, W. M. Grundy et al.·Nov 13, 2008SaveLearn
Simulation of a hybrid optical-radio-acoustic neutrino detector at the South PoleWith construction halfway complete, IceCube is already the most sensitive neutrino telescope ever built. A rearrangement of the final holes of IceCube with increased spacing has been discussed…D. Besson, R. Nahnhauer, P. B. Price et al.·Nov 13, 2008SaveLearn
Observational Characteristics and Possible Asphericity of Over-Luminous Type Ia SupernovaeA few Type Ia supernovae (SNe Ia) have been suggested to be an explosion of a super-Chandrasekhar-mass white dwarf (WD) to account for their large luminosities, requiring a large amount of 56Ni.…Keiichi Maeda, Koichi Iwamoto·Nov 13, 2008SaveLearn
Physical properties of galaxies and their evolution in the VIMOS VLT Deep Survey. II. Extending the mass-metallicity relation to the range z=0.89-1.24Aims. We present a continuation of our study about the relation between stellar mass and gas-phase metallicity in the VIMOS VLT Deep Survey (VVDS). In this work we extend the determination of…E. Perez-Montero, T. Contini, F. Lamareille et al.·Nov 13, 2008SaveLearn
Abundance Analysis of Barium StarsWe obtain the chemical abundances of six barium stars and two CH subgiant stars based on the high signal-to-noise ratio and high resolution Echelle spectra. The neutron capture process elements Y,…G. Q. Liu, Y. C. Liang, L. Deng·Nov 13, 2008SaveLearn
Radiative transfer in black hole systemsWe present a convariant formulation for radiative transfer in curved space time and demonstrate some applications in the black-hole systems. We calculate the emission from semi-transparent accretion…Kinwah Wu, Warrick Ball, Steven V. Fuerst·Nov 13, 2008SaveLearn
Structures, oscillations and solitons in large-scale multi-component self-gravitating systemsWe investigate the structure of dynamics of large self-gravitating astrophysical systems using a self-interacting two-component model. We consider two cases, galaxy clusters and cosmic walls, for…Kinwah Wu, Ziri Younsi, Curtis J. Saxton·Nov 13, 2008SaveLearn
Physical properties of galaxies and their evolution in the VIMOS VLT Deep Survey. I. The evolution of the mass-metallicity relation up to z~0.9We derive the mass-metallicity relation of star-forming galaxies up to z0.9, using data from the VIMOS VLT Deep Survey. Automatic measurement of emission-line fluxes and equivalent widths have…F. Lamareille, J. Brinchmann, T. Contini et al.·Nov 13, 2008SaveLearn
The Stellar Populations of Lyman Break Galaxies at z~5We present the results of Spectral Energy Distribution(SED) fitting analysis for Lyman Break Galaxies(LBGs) at z~5 in the GOODS-N and its flanking fields (the GOODS-FF). With the publicly available…Kiyoto Yabe, Kouji Ohta, Ikuru Iwata et al.·Nov 13, 2008SaveLearn
Transonic properties of the accretion disk around compact objectsAn accretion flow is necessarily transonic around a black hole. However, around a neutron star it may or may not be transonic, depending on the inner disk boundary conditions influenced by the…Banibrata Mukhopadhyay·Nov 13, 2008SaveLearn
Higher order nonlinearity in accretion disks: QPOs of black hole and neutron star sources and their spinWe propose a unified model to explain Quasi-Periodic-Oscillation (QPO), particularly of high frequency, observed from black hole and neutron star systems globally. We consider accreting systems to be…Banibrata Mukhopadhyay·Nov 13, 2008SaveLearn
Gravitational Radiation from Accreting Millisecond PulsarsIt is widely assumed that the observed reduction of the magnetic field of millisecond pulsars can be connected to the accretion phase during which the pulsar is spun up by mass accretion from a…Matthias Vigelius, Donald Payne, Andrew Melatos·Nov 13, 2008SaveLearn
PSR J1753-2240: A mildly recycled pulsar in an eccentric binary systemWe report the discovery of PSR J1753-2240 in the Parkes Multibeam Pulsar Survey database. This 95-ms pulsar is in an eccentric binary system with a 13.6-day orbital period. Period derivative…M. J. Keith, M. Kramer, A. G. Lyne et al.·Nov 13, 2008SaveLearn
Predictions of Quasar Clustering: Redshift, Luminosity and Selection DependenceWe show that current clustering observations of quasars and luminous AGN can be explained by a merger model augmented by feedback from outflows. Using numerical simulations large enough to study…Robert J. Thacker, Evan Scannapieco, H. M. P. Couchman et al.·Nov 13, 2008SaveLearn
Digital Access to a Sky Century at Harvard. II: Initial Photometry and AstrometryDigital Access to a Sky Century @ Harvard (DASCH) is a project to digitize the collection of ~500,000 glass photographic plates held at Harvard College Observatory. The collection spans the time…S. Laycock, S. Tang, J. Grindlay et al.·Nov 13, 2008SaveLearn
Canny Algorithm, Cosmic Strings and the Cosmic Microwave BackgroundWe describe a new code to search for signatures of cosmic strings in cosmic microwave anisotropy maps. The code implements the Canny Algorithm, an edge detection algorithm designed to search for the…Rebecca J. Danos, Robert H. Brandenberger·Nov 12, 2008SaveLearn
The Ellipticities of Cluster Early-type Galaxies from z~1 to z~0: No Evolution in the Overall Distribution of Bulge-to-Disk RatiosWe have compiled a sample of early-type cluster galaxies from 0 < z < 1.3 and measured the evolution of their ellipticity distributions. Our sample contains 487 galaxies in 17 z>0.3 clusters with…B. P. Holden, M. Franx, G. D. Illingworth et al.·Nov 12, 2008SaveLearn
Macroscopic Objects in Theories with Energy-dependent Speeds of LightEnergy-dependent speeds of light have been considered an observable signature of quantum gravity effects. The two simplest dispersion relationships produce either linear or quadratic corrections, in…Simon DeDeo, Chanda Prescod-Weinstein·Nov 12, 2008SaveLearn