Calibration of photometry from the Gemini Multi-Object Spectrograph on Gemini NorthAll available observations of photometric standard stars obtained with the Gemini Multi-Object Spectrograph at Gemini North in the period from August 2001 to December 2003 have been used to establish…Inger Jorgensen·Nov 7, 2008SaveLearn
Status Report and Future Prospects on LUNASKA Lunar Observations with ATCALUNASKA (Lunar UHE Neutrino Astrophysics with the Square Kilometre Array) is a theoretical and experimental project developing the lunar Cherenkov technique for the next generation of giant…C. W. James, R. D. Ekers, J. Alvarez-Muniz et al.·Nov 7, 2008SaveLearn
The Directional Dependence of the Lunar Cherenkov Technique for UHE Neutrino DetectionThe LUNASKA (Lunar UHE Neutrino Astrophysics with the Square Kilometre Array) project is a theoretical and experimental project developing the lunar Cherenkov technique for the next generation of…C. W. James, R. J. Protheroe·Nov 7, 2008SaveLearn
X-Ray and high energy flares from late internal shocks of gamma-ray burstsWe study afterglow flares of gamma-ray bursts (GRBs) in the framework of the late internal shock (LIS) model based on a careful description for the dynamics of a pair of shocks generated by a…Y. W. Yu, Z. G. Dai·Nov 7, 2008SaveLearn
Constraining Spinning Dust Parameters with the WMAP Five-Year DataWe characterize spinning dust emission in the warm ionized medium by comparing templates of Galactic dust and Halpha with the 5-year maps from the Wilkinson Microwave Anisotropy Probe. The…Gregory Dobler, Bruce T. Draine, Douglas P. Finkbeiner·Nov 7, 2008SaveLearn
Gravitational Wave Recoil Oscillations of Black Holes: Implications for Unified Models of Active Galactic NucleiWe consider the consequences of gravitational wave recoil for unified models of active galactic nuclei (AGNs). Spatial oscillations of supermassive black holes (SMBHs) around the cores of galaxies…S. Komossa, David Merritt·Nov 7, 2008SaveLearn
A robust morphological classification of high-redshift galaxies using support vector machines on seeing limited images. II. Quantifying morphological k-correction in the COSMOS field at 1<z<2: Ks band vs. I bandWe quantify the effects of morphological k-correction at 1<z<2 by comparing morphologies measured in the K and I-bands in the COSMOS area. Ks-band data have indeed the advantage of probing…M. Huertas-Company, L. Tasca, D. Rouan et al.·Nov 6, 2008SaveLearn
The Importance of Radiative Feedback for the Stellar Initial Mass FunctionWe investigate the effect of radiative feedback on the star formation process using radiation hydrodynamical simulations. We repeat the previous hydrodynamical star cluster formation simulations of…Matthew R. Bate·Nov 6, 2008SaveLearn
Physics Results from the Argo-YBJ ExperimentThe ARGO-YBJ experiment has been in stable data taking since November 2007 at the YangBaJing Cosmic Ray Laboratory (Tibet, P.R. China, 4300 m a.s.l.). In this paper we report a few selected results…G. Di Sciascio·Nov 6, 2008SaveLearn
Model independent constraints on the cosmological expansion rateWe investigate what current cosmological data tells us about the cosmological expansion rate in a model independent way. Specifically, we study if the expansion was decelerating at high redshifts and…Edvard Mortsell, Chris Clarkson·Nov 6, 2008SaveLearn
Motion of test bodies in theories with nonminimal couplingWe derive the equations of motion of test bodies for a theory with nonminimal coupling by means of a multipole method. The propagation equations for pole-dipole particles are worked out for a gravity…Dirk Puetzfeld, Yuri N. Obukhov·Nov 6, 2008SaveLearn
Detecting non-sinusoidal periodicities in observational data using multi-harmonic periodogramsWe address the problem of assessing the statistical significance of candidate periodicities found using the so-called `multi-harmonic' periodogram, which is being used for detection of…Roman V. Baluev·Nov 6, 2008SaveLearn
Gamma-ray Constraints on Dark Matter Annihilation into Charged ParticlesDark matter annihilation into charged particles is necessarily accompanied by gamma rays, produced via radiative corrections. Internal bremsstrahlung from the final state particles can produce hard…Nicole F. Bell, Thomas D. Jacques·Nov 6, 2008SaveLearn
Beta decay rates for r-process for nuclei near neutron number N=82For r-process nucleosynthesis the beta decay rates of very neutron-rich nuclei are important ingredients. We consider the region around the neutron number N=82 and calculate the half-lives and rates…Kamales Kar, Soumya Chakravarti·Nov 6, 2008SaveLearn
Pseudo Rotation Curve connecting the Galaxy, Dark Halo, and Local GroupWe construct a Galacto-Local Group rotation curve, combining the Galactic rotation curve with a diagram, where galacto-centric radial velocities of outer globular clusters and member galaxies of the…Yoshiaki Sofue·Nov 6, 2008SaveLearn
Unified Rotation Curve of the Galaxy -- Decomposition into de Vaucouleurs Bulge, Disk, Dark Halo, and the 9-kpc Rotation Dip --We present a unified rotation curve of the Galaxy re-constructed from the existing data by re-calculating the distances and velocities for a set of galactic constants R0=8 kpc and V0=200 km/s. We…Y. Sofue, M. Honma, T. Omodaka·Nov 6, 2008SaveLearn
The Spitzer c2d Legacy Results: Star Formation Rates and Efficiencies; Evolution and Lifetimes(Abridged) The c2d Spitzer Legacy project obtained images and photometry with both IRAC and MIPS instruments for five large, nearby molecular clouds. This paper combines information drawn from…Neal J. Evans, Michael M. Dunham, Jes K. Jørgensen et al.·Nov 6, 2008SaveLearn
Spectropolarimetry of SupernovaeOverwhelming evidence has accumulated in recent years that supernova explosions are intrinsically 3-dimensional phenomena with significant departures from spherical symmetry. We review the evidence…Lifan Wang, J. Craig Wheeler·Nov 6, 2008SaveLearn
Discovery of a Low-Mass Companion to the Solar-Type Star TYC 2534-698-1Brown dwarfs and low-mass stellar companions are interesting objects to study since they occupy the mass region between deuterium and hydrogen burning. We report here the serendipitous discovery of a…Stephen R. Kane, Suvrath Mahadevan, William D. Cochran et al.·Nov 6, 2008SaveLearn
Galaxy evolution by color-log(n) type since redshift unity in the Hubble Ultra Deep FieldWe explore the use of the color-log(n) plane (where n is the global Sersic index) as a tool for subdividing the high redshift galaxy population in a physically-motivated manner. Using a series of…Ewan Cameron, Simon P. Driver·Nov 6, 2008SaveLearn
Measuring the Sources of the Intergalactic Ionizing FluxWe use a wide-field (0.9 square degree) X-ray sample with optical and GALEX ultraviolet observations to measure the contribution of Active Galactic Nuclei (AGNs) to the ionizing flux as a function of…L. L. Cowie, A. J. Barger, L. Trouille·Nov 6, 2008SaveLearn
An EVLA search for water megamaser emission in the submm galaxy SMM J16359+6612 at z=2.5Using the Expanded Very Large Array, we have conducted a search for 22.2 GHz H2O megamaser emission in the strongly lensed submm galaxy, SMM J16359+6612 at z=2.517. This object is lensed into three…R. Edmonds, J. Wagg, E. Momjian et al.·Nov 6, 2008SaveLearn
A unifying view of Gamma Ray Burst AfterglowsWe selected a sample of 33 Gamma Ray Bursts (GRBs) detected by Swift, with known redshift and optical extinction at the host frame. For these, we constructed the de-absorbed and K-corrected X-ray and…G. Ghisellini, M. Nardini, G. Ghirlanda et al.·Nov 6, 2008SaveLearn
Luminous Red Galaxy Halo Density Field Reconstruction and Application to Large Scale Structure MeasurementsThe complex relationship between the galaxy density field and the underlying matter field limits our ability to extract cosmological constraints from galaxy redshift surveys. Our approach is to use…Beth A. Reid, David N. Spergel, Paul Bode·Nov 6, 2008SaveLearn
Grain Alignment and CMB Polarization StudiesPolarized microwave emission from dust is an important foreground that may contaminate polarized CMB studies unless carefully accounted for. Modeling of polarization from dust requires a quantitative…A. Lazarian·Nov 6, 2008SaveLearn