Linear theory and velocity correlations of clustersLinear theory provides a reasonable description of the velocity correlations of biased tracers both perpendicular and parallel to the line of separation, provided one accounts for the fact that the…Ravi K. Sheth, Idit Zehavi·Dec 4, 2008SaveLearn
Dynamical Tides in Rotating Planets and StarsTidal dissipation may be important for the internal evolution as well as the orbits of short-period massive planets--hot Jupiters. We revisit a mechanism proposed by Ogilvie and Lin for tidal forcing…Jeremy Goodman, Claire Lackner·Dec 4, 2008SaveLearn
Habitability of Super-Earth Planets around Other Suns: Models including Red Giant Branch EvolutionThe unexpected diversity of exoplanets includes a growing number of super- Earth planets, i.e., exoplanets with masses of up to several Earth masses and a similar chemical and mineralogical…W. von Bloh, M. Cuntz, K. -P. Schroeder et al.·Dec 4, 2008SaveLearn
FERENGI: Redshifting galaxies from SDSS to GEMS, STAGES and COSMOSWe describe the creation of a set of artificially "redshifted" galaxies in the range 0.1<z<1.1 using a set of ~100 SDSS low redshift (v<7000 km/s) images as input. The intention is to…Marco Barden, Knud Jahnke, Boris Häußler·Dec 4, 2008SaveLearn
The mass of the black hole in Centaurus A from SINFONI AO-assisted integral-field observations of stellar kinematicsWe present a determination of the mass of the supermassive black hole (BH) and the nuclear stellar orbital distribution of the elliptical galaxy Centaurus A (NGC5128) using high-resolution…Michele Cappellari, N. Neumayer, J. Reunanen et al.·Dec 4, 2008SaveLearn
Spitzer observations of extended Lyman-alpha Clouds in the SSA22 fieldWe present the results of a Spitzer IRAC and MIPS 24 micron study of extended Lyman-alpha clouds (or Lyman-alpha Blobs, LABs) within the SSA22 filamentary structure at z = 3.09. We detect 6/26 LABs…T. M. A. Webb, T. Yamada, J. -S. Huang et al.·Dec 4, 2008SaveLearn
Exploring the powering source of the TeV X-ray binary LS 5039LS 5039 is one of the four TeV emitting X-ray binaries detected up to now. The powering source of its multi-wavelength emission can be accretion in a microquasar scenario or wind interaction in a…J. Moldon, M. Ribo, Josep M. Paredes et al.·Dec 4, 2008SaveLearn
Frying Doughnuts: What can the reprocessing of X-rays to IR tell us about the AGN environment?Active galactic nuclei (AGN) produce vast amounts of high energy radiation deep in their central engines. X-rays either escape the AGN or are absorbed and re-emitted mostly as IR. By studying the…B. McKernan, K. E. S. Ford, N. Chang et al.·Dec 4, 2008SaveLearn
Discovery of Very High-Energy Gamma-Ray Radiation from the BL Lac 1ES 0806+524The high-frequency-peaked BL-Lacertae object 1ES 0806+524, at redshift z=0.138, was observed in the very-high-energy (VHE) gamma-ray regime by VERITAS between November 2006 and April…VERITAS Collaboration, V. Acciari, E. Aliu et al.·Dec 4, 2008SaveLearn
SMBH feeding and star formation in massive accretion discsGalactic nuclei are unique laboratories for the study of processes connected with the accretion of gas onto supermassive black holes. At the same time, they represent challenging environments from…Ladislav Subr·Dec 4, 2008SaveLearn
R-process nucleosynthesis calculations with complete nuclear physics inputThe r-process constitutes one of the major challenges in nuclear astrophysics. Its astrophysical site has not yet been identified but there is observational evidence suggesting that at least two…I. Petermann, A. Arcones, A. Kelić et al.·Dec 4, 2008SaveLearn
Correlation between the spatial distribution of circumstellar disks and massive stars in the young open cluster NGC 6611. II: Cluster members selected with Spitzer/IRACContext: the observations of the proplyds in the Orion Nebula Cluster, showing clear evidence of ongoing photoevaporation, have provided a clear proof about the role of the externally induced…M. G. Guarcello, G. Micela, F. Damiani et al.·Dec 4, 2008SaveLearn
An excess of emission in the dark cloud LDN 1111 with the Arcminute Microkelvin ImagerWe present observations of the Lynds' dark nebula LDN 1111 made at microwave frequencies between 14.6 and 17.2 GHz with the Arcminute Microkelvin Imager (AMI). We find emission in this frequency…AMI Consortium, :, A. M. M. Scaife et al.·Dec 4, 2008SaveLearn
White dwarfs in the Capodimonte deep fieldIn this article we describe the search for white dwarfs (WDs) in the multi-band photometric data of the Capodimonte deep field survey. The WD candidates were selected through the V-RC vs B-V…R. Silvotti, S. Catalan, M. Cignoni et al.·Dec 4, 2008SaveLearn
Catching blazars in the act! GLAST triggers for TeV observation of blazarsThe double humped SED (Spectral Energy Distribution) of blazars, and their flaring phenomena can be explained by various leptonic and hadronic models. However, accurate modeling of the high frequency…B. Behera, S. J. Wagner·Dec 4, 2008SaveLearn
AGB Stars in the Fornax Dwarf Spheroidal GalaxyWe report on a multi-epoch study of the Fornax dwarf spheroidal galaxy, made with the Infrared Survey Facility, over an area of about 42'x42'. The colour-magnitude diagram shows a broad…Patricia A. Whitelock, John W. Menzies, Michael W. Feast et al.·Dec 4, 2008SaveLearn
Structure of the SMC - Stellar component distribution from 2MASS dataThe spatial distribution of the SMC stellar component is investigated from 2MASS data. The morphology of the different age populations is presented. The center of the distribution is calculated and…I. Gonidakis, E. Livanou, E. Kontizas et al.·Dec 4, 2008SaveLearn
A Chain of Dark Clouds in Projection Against the Galactic CenterIn the J, H, and Ks bands survey of the the Galactic Center region over an area of 2deg x 5deg, we have found many dark clouds, among which a distinguished chain of dark clouds can be identified with…Takahiro Nagayama, Shuji Sato, Shogo Nishiyama et al.·Dec 4, 2008SaveLearn
Toward mode selection in Delta Scuti stars: Regularities in observed and theoretical frequency spectraOnly a fraction of the theoretically predicted nonradial pulsation modes have so far been observed in Delta Scuti stars. Nevertheless, the large number of frequencies detected in recent photometric…M. Breger, P. Lenz, A. A. Pamyatnykh·Dec 4, 2008SaveLearn
The evolution of the Galactic metallicity gradient from high-resolution spectroscopy of open clustersOpen clusters offer a unique possibility to study the time evolution of the radial metallicity gradients of several elements in our Galaxy, because they span large intervals in age and Galactocentric…Laura Magrini, Paola Sestito, Sofia Randich et al.·Dec 4, 2008SaveLearn
Neutral H density at the termination shock: a consolidation of recent resultsWe discuss a consolidation of determinations of the density of neutral interstellar H at the nose of the termination shock carried out with the use of various data sets, techniques, and modeling…M. Bzowski, E. Moebius, S. Tarnopolski et al.·Dec 4, 2008SaveLearn
Neutral interstellar hydrogen in the inner heliosphere under the influence of wavelength-dependent solar radiation pressureWith the plethora of detailed results from heliospheric missions and at the advent of the first mission dedicated IBEX, we have entered the era of precision heliospheric studies. Interpretation of…S. Tarnopolski, M. Bzowski·Dec 4, 2008SaveLearn
A signature for the absence of event horizonsA sharp dip in the spectrum of gamma rays coming from compact objects below 70 MeV would be an unambiguous signal that compact astrophysical objects have a physical surface, and there is no event…J. Barbieri, G. Chapline·Dec 3, 2008SaveLearn
GUT-Scale Primordial Black Holes: Consequences and ConstraintsA population of very light primordial black holes which evaporate before nucleosynthesis begins is unconstrained unless the decaying black holes leave stable relics. We show that gravitons Hawking…Richard Anantua, Richard Easther, John T. Giblin·Dec 3, 2008SaveLearn
He II absorption and the sawtooth spectrum of the cosmic far-UV backgroundCosmic ultraviolet background radiation between 3 and 4 Ryd is reprocessed by resonant line absorption in the Lyman series of intergalactic He II. This process results in a sawtooth modulation of the…Piero Madau, Francesco Haardt·Dec 3, 2008SaveLearn