IRAS-based whole-sky upper limit on Dyson SpheresA Dyson Sphere is a hypothetical construct of a star purposely cloaked by a thick swarm of broken-up planetary material to better utilize all of the stellar energy. A clean Dyson Sphere…Richard A. Carrigan·Nov 14, 2008SaveLearn
AGN-Starburst connection in NGC7582: Gemini near-infrared spectrograph integral field unit observationsWe analyse two-dimensional near-IR K-band spectra from the inner 660x315 pc2 of the Seyfert galaxy NGC7582 obtained with the Gemini GNIRS IFU. The nucleus harbors an unresolved source well…Rogemar A. Riffel, Thaisa Storchi-Bergmann, Oli L. Dors et al.·Nov 14, 2008SaveLearn
Astrometry with the Keck-Interferometer: the ASTRA project and its scienceThe sensitivity and astrometry upgrade ASTRA of the Keck Interferometer is introduced. After a brief overview of the underlying interferometric principles, the technology and concepts of the upgrade…Jorg-Uwe Pott, Julien Woillez, Rachel L. Akeson et al.·Nov 14, 2008SaveLearn
Is the Missing Ultra-Red Material Colorless Ice?The extremely red colors of some transneptunian objects and Centaurs are not seen among the Jupiter family comets which supposedly derive from them. Could this mismatch result from sublimation loss…W. M. Grundy·Nov 14, 2008SaveLearn
Emission-lines calibrations of the Star Formation Rate from the Sloan Digital Sky SurveyOur goal is to study the existing star formation rate calibrations based on emission-line luminosities and to provide new ones. We use the SDSS data release DR4, which gives star formation rates and…B. Argence, F. Lamareille·Nov 14, 2008SaveLearn
An 84 microGauss Magnetic Field in a Galaxy at Redshift z=0.692The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and the formation of…Arthur M. Wolfe, Regina A. Jorgenson, Timothy Robishaw et al.·Nov 14, 2008SaveLearn
A Realistic Cosmological Model Based on Observations and Some Theory Developed Over the Last 90 YearsThis meeting is entitled "A Century of Cosmology." But most of the papers being given here are based on work done very recently and there is really no attempt being made to critically review…Geoffrey Burbidge·Nov 14, 2008SaveLearn
Emission line objects in NGC 6822. New Planetary Nebula candidatesImages obtained with the CTIO 4-m telescope and the MOSAIC-2 wide field camera in [O III] 5007 and Hαon-band and off-band filters are analyzed to search for emission lines objects in the galaxy NGC…Liliana Hernandez-Martinez, Miriam Pena·Nov 14, 2008SaveLearn
Starburst99 for WindowsWe describe a Windows compatible version of the evolutionary synthesis code Starburst99. Starburst99 for Windows was developed from the public UNIX based version at STScI. We converted the original…Claus Leitherer, Julia Chen·Nov 14, 2008SaveLearn
Metallicities for 13 nearby open clusters from high-resolution spectroscopy of dwarf and giant stars. Stellar metallicity, stellar mass, and giant planetsWe present a study of accurate stellar parameters and iron abundances for 39 giants and 16 dwarfs in the 13 open clusters IC2714, IC4651, IC4756, NGC2360, NGC2423, NGC2447 (M93), NGC2539, NGC2682…N. C. Santos, C. Lovis, G. Pace et al.·Nov 14, 2008SaveLearn
Integral-field spectroscopy of SLACS lensesThe combination of two-dimensional kinematics and gravitational lens modelling permits detailed reconstruction of the phase-space structure of early-type galaxies and sets constraints on the…Oliver Czoske, Matteo Barnabe, Leon Koopmans·Nov 14, 2008SaveLearn
Bounds on Light Dark MatterIn this talk we review existing cosmological and astrophysical bounds on light (with the mass in keV - MeV range) and super-weakly interacting dark matter candidates. A particular attention is paid…Alexey Boyarsky, Oleg Ruchayskiy·Nov 14, 2008SaveLearn
Kinematic Constraints to the Transition Redshift from SNe Ia Union DataThe kinematic approach to cosmological tests provides a direct evidence to the present accelerating stage of the universe which does not depend on the validity of general relativity, as well as on…J. V. Cunha·Nov 14, 2008SaveLearn
Recombination Rate Coefficients for KLL Di-electronic Satellite Lines of Fe XXV and Ni XXVIIThe unified method for total electron-ion recombination is extended to study the dielectronic satellite (DES) lines. These lines, formed from radiative decay of autoionizing states, are highly…S. N. Nahar, J. Oelgoetz, A. K. Pradhan·Nov 14, 2008SaveLearn
Tomographic reconstruction for Wide Field Adaptive Optics systems: Fourier domain analysis and fundamental limitationsSeveral Wide Field of view Adaptive Optics (WFAO) concepts like Multi-Conjugate AO (MCAO), Multi-Object AO (MOAO) or Ground-Layer AO (GLAO) are currently studied for the next generation of Extremely…B. Neichel, T. Fusco, J. -M. Conan·Nov 14, 2008SaveLearn
Newtonian Approach to the Matter Power Spectrum of the Generalized Chaplygin GasWe model the cosmic medium as the mixture of a generalized Chaplygin gas and a pressureless matter component. Within a neo-Newtonian approach we compute the matter power spectrum. The 2dFGRS data are…J. C. Fabris, S. V. B. Goncalves, H. E. S. Velten et al.·Nov 14, 2008SaveLearn
Long wavelength limit of evolution of nonlinear cosmological perturbationsIn the general matter composition where the multiple scalar fields and the multiple perfect fluids coexist, in the leading order of the gradient expansion, we construct all of the solutions of the…Takashi Hamazaki·Nov 14, 2008SaveLearn
Structure formation as an alternative to dark energy and modified gravityObservations are inconsistent with a homogeneous and isotropic universe with ordinary matter and gravity. The universe is far from exact homogeneity and isotropy at late times, and the effect of the…Syksy Rasanen·Nov 14, 2008SaveLearn
Radio Detection of Particles from the CosmosThe ARENA08 conference, held in Rome in June 2008, gave an almost complete overview on applications of the new techniques radio and acoustic detection of electromagnetic showers generated by…Andreas Haungs·Nov 14, 2008SaveLearn
Testing gravity on large scales. The skewness of the galaxy distribution at z~1We study the evolution of the low-order moments of the galaxy overdensity distribution over the redshift interval 0.7<z<1.5. We find that the variance and the normalized skewness evolve over this…C. Marinoni, L. Guzzo, A. Cappi et al.·Nov 14, 2008SaveLearn
Catching Up on State Transitions in Cygnus X-1In 2005 February we observed Cygnus X-1 over a period of 10 days quasi-continuously with the Rossi X-ray Timing Explorer and the Ryle telescope. We present the results of the spectral and timing…Moritz Boeck, Manfred Hanke, Joern Wilms et al.·Nov 14, 2008SaveLearn
The Gaia Project - technique, performance and statusGaia is a satellite mission of the ESA, aiming at absolute astrometric measurements of about one billion stars (all stars down to 20th magnitude, with unprecedented accuracy. Additionally, magnitudes…Stefan Jordan·Nov 14, 2008SaveLearn
Turbulent stresses as a function of shear rate in a local disk modelWe present local numerical models of accretion disk turbulence driven by the magnetorotational instability with varying shear rate. The resulting turbulent stresses are compared with predictions of a…A. J. Liljeström, M. J. Korpi, P. J. Käpylä et al.·Nov 14, 2008SaveLearn
Models for Pop I stars: implications for age determinationsStarting from a few topical astrophysical questions which require the knowledge of the age of Pop I stars, we discuss the needed precision on the age in order to make progresses in these areas of…Georges Meynet, Patrick Eggenberger, Nami Mowlavi et al.·Nov 14, 2008SaveLearn
Continued Monitoring of LMXBs with the Faulkes TelescopesThe Faulkes Telescope Project is an educational and research arm of the Las Cumbres Observatory Global Telescope Network (LCOGTN). It has two 2-metre robotic telescopes, located at Haleakala on Maui…Fraser Lewis, David M. Russell, Rob P. Fender et al.·Nov 14, 2008SaveLearn