The Hubble Legacy Archive NICMOS Grism DataThe Hubble Legacy Archive (HLA) aims to create calibrated science data from the Hubble Space Telescope archive and make them accessible via user-friendly and Virtual Observatory (VO) compatible…Wolfram Freudling, Martin Kümmel, Jonas Haase et al.·Sep 15, 2008SaveLearn
The Correlation between X-ray and UV Properties of BAL QSOsWe compile a large sample of broad absorption lines (BAL) quasars with X-ray observations from the archive data and Sloan Digital Sky Survey Data Release 5. The sample consists of 41 BAL QSOs.…LuLu Fan, HuiYuan Wang, Tinggui Wang et al.·Sep 15, 2008SaveLearn
High-frequency VLBI observations of SgrA* during a multi-frequency campaign in May 2007In May 2007 the compact radio source Sgr A* was observed in a global multi-frequency monitoring campaign, from radio to X-ray bands. Here we present and discuss first and preliminary results from…R. -S. Lu, T. P. Krichbaum, A. Eckart et al.·Sep 15, 2008SaveLearn
Event-horizon-scale structure in the supermassive black hole candidate at the Galactic CentreThe cores of most galaxies are thought to harbour supermassive black holes, which power galactic nuclei by converting the gravitational energy of accreting matter into radiation (ref 1). Sagittarius…Sheperd Doeleman, Jonathan Weintroub, Alan E. E. Rogers et al.·Sep 15, 2008SaveLearn
Inverse Compton gamma-ray models for remnants of Galactic type Ia supernovae?We theoretically and phenomenologically investigate the question whether the gamma-ray emission from the remnants of the type Ia supernovae SN 1006, Tycho's SN and Kepler's SN can be the…H. J. Voelk, L. T. Ksenofontov, E. G. Berezhko·Sep 15, 2008SaveLearn
Mapping the QCD Phase Transition with Accreting Compact StarsWe discuss an idea for how accreting millisecond pulsars could contribute to the understanding of the QCD phase transition in the high-density nuclear matter equation of state (EoS). It is based on…David Blaschke, Gevorg Poghosyan, Hovik Grigorian·Sep 15, 2008SaveLearn
The fully connected N-dimensional skeleton: probing the evolution of the cosmic webA method to compute the full hierarchy of the critical subsets of a density field is presented. It is based on a watershed technique and uses a probability propagation scheme to improve the quality…T. Sousbie, S. Colombi, C. Pichon·Sep 14, 2008SaveLearn
Hydrodynamics of structure formation in the early UniverseTheory and observations reveal fatal flaws in the standard LambdaCDM model. The cold dark matter hierarchical clustering paradigm predicts a gradual bottom-up growth of gravitational structures…C. H. Gibson, T. M. Nieuwenhuizen, R. E. Schild·Sep 14, 2008SaveLearn
Accretion onto Seed Black Holes in the First GalaxiesThe validity of the hypothesis that the massive black holes in high redshift quasars grew from stellar-sized "seeds" is contingent on a seed's ability to double its mass every few ten…Milos Milosavljevic, Volker Bromm, Sean M. Couch et al.·Sep 14, 2008SaveLearn
A cosmic abundance standard: chemical homogeneity of the solar neighbourhood and the ISM dust-phase compositionA representative sample of unevolved early B-type stars in nearby OB associations and the field is analysed to unprecedented precision using NLTE techniques. The resulting chemical composition is…Norbert Przybilla, Maria-Fernanda Nieva, Keith Butler·Sep 14, 2008SaveLearn
Enlightening the structure and dynamics of Abell 1942We present a dynamical analysis of the galaxy cluster Abell 1942 based on a set of 128 velocities obtained at the European Southern Observatory. Data on individual galaxies are presented and the…H. V. Capelato, D. Proust, G. B. LIma Neto et al.·Sep 14, 2008SaveLearn
Effects of dark matter annihilation on the first starsWe study the evolution of the first stars in the universe (Population III) from the early pre-Main Sequence until the end of helium burning in the presence of WIMP dark matter annihilation inside the…F. Iocco, A. Bressan, E. Ripamonti et al.·Sep 14, 2008SaveLearn
When efficient star formation drives cluster formationWe investigate the impact of the star formation efficiency in cluster forming cores on the evolution of the mass in star clusters over the age range 1-100Myr, when star clusters undergo their infant…G. Parmentier, U. Fritze·Sep 14, 2008SaveLearn
Structures of the magnetoionic media around the FR I radio galaxies 3C 31 and Hydra AWe use high-quality VLA images of the Fanaroff & Riley Class I radio galaxy 3C 31 at six frequencies in the range 1365 to 8440MHz to explore the spatial scale and origin of the rotation measure (RM)…R. A. Laing, A. H. Bridle, P. Parma et al.·Sep 14, 2008SaveLearn
Stellar Velocity Distribution in Galactic DisksWe present numerical studies of the properties of the stellar velocity distribution in galactic disks which have developed a saturated, two-armed spiral structure. In previous papers we used the…Christian Theis, Eduard Vorobyov·Sep 14, 2008SaveLearn
Modeling pulse profiles of accreting millisecond pulsarsI review the basic observational properties of accreting millisecond pulsars that are important for understanding the physics involved in formation of their pulse profiles. I then discuss main…Juri Poutanen·Sep 14, 2008SaveLearn
A search for super-large structures in deep galaxy surveysRecent extensive, multi-color deep surveys of galaxies open a possibility to get observational estimation of sizes for the largest structures in the Universe. Photometric redshift accuracy (about…N. V. Nabokov, Yu. V. Baryshev·Sep 14, 2008SaveLearn
PAH emission from Herbig AeBe starsWe present spectra of a sample of Herbig Ae and Be (HAeBe) stars obtained with the Infrared Spectrograph on the Spitzer Space Telescope. All but one of the Herbig stars show emission from polycyclic…Luke D. Keller, G. C. Sloan, W. J. Forrest et al.·Sep 14, 2008SaveLearn
Environmental Effects on Satellite Galaxies: The Link Between Concentration, Size and Colour ProfileUsing the SDSS DR4 group catalogue of Yang et al. (2007), we investigate sizes, concentrations, colour gradients and surface brightness profiles of central and satellite galaxies. We compare central…Simone M. Weinmann, Guinevere Kauffmann, Frank C. van den Bosch et al.·Sep 13, 2008SaveLearn
Geodynamics and Rate of Volcanism on Massive Earth-like PlanetsWe provide estimates of volcanism versus time for planets with Earth-like composition and masses from 0.25 to 25 times Earth, as a step toward predicting atmospheric mass on extrasolar rocky planets.…Edwin S. Kite, Michael Manga, Eric Gaidos·Sep 13, 2008SaveLearn
Discovery in IC10 of the farthest known symbiotic starWe report the discovery of the first known symbiotic star in IC10, a starburst galaxy belonging to the Local Group, at a distance of ~750kpc. The symbiotic star was identified during a survey of…Denise R. Goncalves, Laura Magrini, Ulisse Munari et al.·Sep 13, 2008SaveLearn
Chemical Abundances from the ContinuumThe calculation of solar absolute fluxes in the near-UV is revisited, discussing in some detail recent updates in theoretical calculations of bound-free opacity from metals. Modest changes in the…C. Allende Prieto·Sep 13, 2008SaveLearn
APOGEE: The Apache Point Observatory Galactic Evolution ExperimentAPOGEE is a large-scale, NIR, high-resolution (R~20,000) spectroscopic survey of Galactic stars. It is one of the four experiments in SDSS-III. Because APOGEE will observe in the H band, it will be…C. Allende Prieto, S. R. Majewski, R. Schiavon et al.·Sep 13, 2008SaveLearn
Young Stars in the Camelopardalis Dust and Molecular Clouds. IV. Spectral Observations of the Suspected YSOsIn the first three papers of this series, about 200 objects in Camelopardalis and the nearby areas of Cassiopeia, Perseus and Auriga were suspected of being pre-main-sequence stars in different…C. J. Corbally, V. Straizys·Sep 13, 2008SaveLearn
Properties of the molecular gas in a starbursting QSO at z=1.83 in the COSMOS fieldUsing the IRAM 30m telescope, we have detected the CO J=2-1, 4-3, 5-4, and 6-5 emission lines in the millimeter-bright, blank-field selected AGN COSMOS J100038+020822 at redshift z=1.8275. The…Manuel Aravena, Frank Bertoldi, Eva Schinnerer et al.·Sep 13, 2008SaveLearn