The Star Formation Law in Nearby Galaxies on Sub-Kpc Scales(Abridged) We present a comprehensive analysis of the relationship between star formation rate surface density (SFR SD) and gas surface density (gas SD) at sub-kpc resolution in a sample of 18 nearby…Frank Bigiel, Adam Leroy, Fabian Walter et al.·Oct 14, 2008SaveLearn
Super Star Clusters in SBS0335-052EAs one of the lowest metallicity star forming galaxies, with a nucleus of several super star clusters, SBS0335-052E is the subject of substantial current study. We present new insights on this galaxy…Rodger I. Thompson, Marc Sauvage, Robert C. Kennicutt et al.·Oct 14, 2008SaveLearn
Secular Evolution in Disk Galaxies: Pseudobulge Growth and the Formation of Spheroidal GalaxiesUpdating Kormendy & Kennicutt (2004, ARAA, 42, 603), we review internal secular evolution of galaxy disks. One consequence is the growth of pseudobulges that often are mistaken for true…John Kormendy, David B. Fisher·Oct 14, 2008SaveLearn
'Ultimate' Information Content in Solar and Stellar Spectra: Photospheric line asymmetries and wavelength shiftsCONTEXT: Spectral-line asymmetries and wavelength shifts are signatures of hydrodynamics in solar and stellar atmospheres. Theory may precisely predict idealized lines, but observed spectra are…Dainis Dravins·Oct 14, 2008SaveLearn
Constraints to Energy Spectra of Blazars based on Recent EBL Limits from Galaxy CountsWe combine the recent estimate of the contribution of galaxies to the 3.6 micron intensity of the extragalactic background light (EBL) with optical and near-infrared (IR) galaxy counts to set new…F. Krennrich, E. Dwek, A. Imran·Oct 14, 2008SaveLearn
Dichotomy in the Dynamical Status of Massive Cores in OrionTo study the evolution of high mass cores, we have searched for evidence of collapse motions in a large sample of starless cores in the Orion molecular cloud. We used the Caltech Submillimeter…T. velusamy, R. Peng, D. Li et al.·Oct 14, 2008SaveLearn
Optical identification of hard X-ray source IGRJ18257-0707We present the results of the optical identification of hard X-ray source IGRJ18257-0707 trough the spectroscopic observations of its optical counterpart with RTT150 telescope. Accurate position of…R. A. Burenin, I. F. Bikmaev, M. G. Revnivtsev et al.·Oct 14, 2008SaveLearn
Propagation of ultra high energy cosmic raysWe briefly describe the energy loss processes of ultrahigh energy protons, heavier nuclei and gamma rays in interactions with the universal photon fields of the Universe. We then discuss the…Todor Stanev·Oct 14, 2008SaveLearn
POET: POlarimeters for Energetic TransientsPOET (Polarimeters for Energetic Transients) is a Small Explorer mission concept proposed to NASA in January 2008. The principal scientific goal of POET is to measure GRB polarization between 2 and…J. E. Hill, M. L. McConnell, P. Bloser et al.·Oct 14, 2008SaveLearn
Gamma-Ray Burst at the extreme: "the naked-eye burst" GRB 080319BOn 19 March 2008, the northern sky was the stage of a spectacular optical transient that for a few seconds remained visible to the naked eye. The transient was associated with GRB 080319B, a…P. R. Wozniak, W. T. Vestrand, A. D. Panaitescu et al.·Oct 14, 2008SaveLearn
The spatial distribution of polar hydrogen deposits on the MoonA new analysis of the Lunar Prospector epithermal neutron data is presented, providing an improved map of the distribution of hydrogen near to the lunar poles. This is achieved using a specially…V. R. Eke, L. F. A. Teodoro, R. C. Elphic·Oct 14, 2008SaveLearn
Structure and dynamics of penumbral filamentsHigh-resolution observations of sunspots have revealed the existence of dark cores inside the bright filaments of the penumbra. Here we present the stationary solution of the heat transfer equation…B. Ruiz Cobo, L. R. Bellot Rubio·Oct 14, 2008SaveLearn
Testing the potential and limitations of seismic dataI describe the advantage of using singular value decomposition as a diagnostic tool for exploring the potential and limitations of seismic data. Using stellar models coupled with the expected errors…Orlagh L. Creevey·Oct 14, 2008SaveLearn
Asteroseismic age and radius of Kepler starsThe Kepler mission's primary goal is the detection and characterization of Earth-like planets by observing continuously a region of sky for a nominal period of three-and-a-half years. Over…Orlagh L. Creevey·Oct 14, 2008SaveLearn
Three dimensional structure of penumbral filaments from Hinode observationsWe analyse spectropolarimetric observations of the penumbra of the NOAA AR 10953 at high spatial resolution (0.3"). The full Stokes profiles of the Fe I lines at 630.1 nm and 630.2 nm have been…K. G. Puschmann, B. Ruiz Cobo, V. Martinez Pillet·Oct 14, 2008SaveLearn
A new activity phase of the blazar 3C 454.3. Multifrequency observations by the WEBT and XMM-Newton in 2007-2008We present and analyse the WEBT multifrequency observations of 3C 454.3 in the 2007-2008 observing season, including XMM-Newton observations and near-IR spectroscopic monitoring, and compare the…C. M. Raiteri, M. Villata, V. M. Larionov et al.·Oct 14, 2008SaveLearn
On the rapid TeV flaring activity of Markarian 501Aims: We investigate the one-zone SSC model of TeV blazars in the presence of electron acceleration. In this picture electrons reach a maximum energy where acceleration saturates from a combination…A. Mastichiadis, K. Moraitis·Oct 14, 2008SaveLearn
Linear wave propagation in relativistic magnetohydrodynamicsThe properties of linear Alfvén, slow, and fast magnetoacoustic waves for uniform plasmas in relativistic magnetohydrodynamics (MHD) are discussed, augmenting the well-known expressions for their…R. Keppens, Z. Meliani·Oct 14, 2008SaveLearn
A new standard: Age and distance for the open cluster NGC 6791 from the eclipsing binary member V20The detached eclipsing binary V20 in the old, metal--rich open cluster NGC 6791 is studied in order to determine highly accurate masses and radii of its components. This allows the cluster age to be…F. Grundahl, J. V. Clausen, S. Hardis et al.·Oct 14, 2008SaveLearn
Geometrically Derived Timescales for Star Formation in Spiral GalaxiesWe estimate a characteristic timescale for star formation in the spiral arms of disk galaxies, going from atomic hydrogen (HI) to dust-enshrouded massive stars. Drawing on high-resolution HI data…D. Tamburro, H. -W. Rix, F. Walter et al.·Oct 14, 2008SaveLearn
The nature and evolution of Nova Cygni 2006AIMS: Nova Cyg 2006 has been intensively observed throughout its full outburst. We investigate the energetics and evolution of the central source and of the expanding ejecta, their chemical…U. Munari, A. Siviero, A. Henden et al.·Oct 14, 2008SaveLearn
MARCS model atmospheresIn this review presented at the Symposium A stellar journey in Uppsala, June 2008, I give my account of the historical development of the MARCS code from the first version published in 1975 and its…Bertrand Plez·Oct 14, 2008SaveLearn
Structure of Neutron Star with a Quark CoreThe equation of state of de-confined quark matter within the MIT bag model is calculated. This equation of state is used to compute the structure of a neutron star with quark core. It is found that…G. H. Bordbar, M. Bigdeli, T. Yazdizadeh·Oct 14, 2008SaveLearn
Our Nearest 15 Million Neighbors: The Field Low-Mass Stellar Luminosity and Mass FunctionsWe report on a new measurement of the luminosity function (LF) and mass function (MF) of field low-mass dwarfs using Sloan Digital Sky Survey (SDSS) photometry. The final catalog is composed of ~15…John J. Bochanski, Suzanne L. Hawley, I. Neill Reid et al.·Oct 14, 2008SaveLearn
Blind and non-blind source detection in WMAP 5-year mapsWe have analyzed the efficiency in source detection and flux density estimation of blind and non-blind detection techniques exploiting the MHW2 filter applied to the Wilkinson Microwave Anisotropy…M. Massardi, M. López-Caniego, J. González-Nuevo et al.·Oct 14, 2008SaveLearn