Search for OB stars running away from young star clusters. I. NGC 6611N-body simulations have shown that the dynamical decay of the young (~1 Myr) Orion Nebula cluster could be responsible for the loss of at least half of its initial content of OB stars. This result…V. V. Gvaramadze, D. J. Bomans·Sep 3, 2008SaveLearn
Primordial Nucleosynthesis: from precision cosmology to fundamental physicsWe present an up-to-date review of Big Bang Nucleosynthesis (BBN). We discuss the main improvements which have been achieved in the past two decades on the overall theoretical framework, summarize…F. Iocco, G. Mangano, G. Miele et al.·Sep 3, 2008SaveLearn
Probability for chance coincidence of a gamma-ray burst with a galaxy on the skyThe nearby long GRB 060614 was not accompanied by a supernova, challenging the collapsar model for long-duration GRBs and the traditional classification scheme for GRBs. However, Cobb et al. have…Maria Angela Campisi, Li-Xin Li·Sep 3, 2008SaveLearn
Hydrodynamics of a perturbation in the jet of 3C111We present results on the modelling of the ejection of a superluminal component in the jet of 3C111. We propose that the component is generated by an injection of dense material followed by a…M. Perucho, I. Agudo, J. L. Gomez et al.·Sep 3, 2008SaveLearn
Numerical calculation of the lowest eigenmodes of the Laplacian in compact orientable 3-dimensional hyperbolic spacesA simple method to compute numerically the lowest eigenmodes of the Laplacian in compact orientable hyperbolic spaces of dimension 3 is presented. It is applied to the Thurston manifold, the…J. P. Pansart·Sep 3, 2008SaveLearn
HESS J0632+057 : A new gamma-ray binary?The High Energy Stereoscopic System (HESS) survey of the Galactic plane has established the existence of a substantial number (~40) of Galactic TeV gamma-ray sources, a large fraction of which remain…J. A. Hinton, J. L. Skilton, S. Funk et al.·Sep 3, 2008SaveLearn
Parker/buoyancy instabilities with anisotropic thermal conduction, cosmic rays, and arbitrary magnetic field strengthWe report the results of a local stability analysis for a magnetized, gravitationally stratified plasma containing cosmic rays. We account for cosmic-ray diffusion and thermal conduction parallel to…Timothy J. Dennis, Benjamin D. G. Chandran·Sep 3, 2008SaveLearn
The Infancy of Cosmic ReionizationWe consider the early stages of cosmic hydrogen or helium reionization, when ionizing sources were still rare. We show that Poisson fluctuations in the galaxy distribution substantially affected the…Rennan Barkana·Sep 3, 2008SaveLearn
A spectroscopic confirmation of the Bootes II dwarf spheroidalWe present a new suite of photometric and spectroscopic data for the faint Bootes II dwarf spheroidal galaxy candidate. Our deep photometry, obtained with the INT/WFC, suggests a distance of 46 kpc…A. Koch, M. I. Wilkinson, J. T. Kleyna et al.·Sep 3, 2008SaveLearn
Low-Mass X-ray Binaries and Globular Clusters in Early-Type Galaxies. II. Globular Cluster Candidates and their Mass-Metallicity RelationWe present an astrometry and photometry catalogue of globular cluster (GC) candidates detected with HST WFPC2 in a sample of 19 early-type galaxies, appropriate for comparison to the low-mass X-ray…Philip J Humphrey·Sep 3, 2008SaveLearn
The supermassive black hole of Fornax AThe radio galaxy Fornax A (NGC 1316) is a prominent merger remnant in the outskirts of the Fornax cluster. Its giant radio lobes suggest the presence of a powerful AGN and thus a central supermassive…N. Nowak, R. P. Saglia, J. Thomas et al.·Sep 3, 2008SaveLearn
How long should an astronomical paper be to increase its Impact?Naively, one would expect longer papers to have larger impact (i.e., to be cited more). I tested this expectation by selecting all (~30,000) refereed papers from A&A, AJ, ApJ and MNRAS published…Krzysztof Zbigniew Stanek·Sep 3, 2008SaveLearn
Quasi-equilibrium models for triaxially deformed rotating compact starsQuasi-equilibrium models of rapidly rotating triaxially deformed stars are computed in general relativistic gravity, assuming a conformally flat spatial geometry (Isenberg-Wilson-Mathews formulation)…Xing Huang, Charalampos Markakis, Noriyuki Sugiyama et al.·Sep 3, 2008SaveLearn
Astrophysical tests of mirror dark matterMirror matter is a self-collisional dark matter candidate. If exact mirror parity is a conserved symmetry of the nature, there could exist a parallel hidden (mirror) sector of the Universe which has…P. Ciarcelluti·Sep 3, 2008SaveLearn
The cosmological co-evolution of supermassive black holes, AGN and galaxiesWe model the cosmological co-evolution of galaxies and their central supermassive black holes (BHs) within a semi-analytical framework developed on the outputs of the Millennium Simulation (Croton et…F. Marulli, S. Bonoli, E. Branchini et al.·Sep 3, 2008SaveLearn
Optical-mechanical operation of the F2T2 Filter: a tunable filter designed to search for First LightThe Flamingos-2 Tandem Tunable filter is a tunable, narrow-band filter, consisting of two Fabry-Perot etalons in series, capable of scanning to any wavelength from 0.95 to 1.35 microns with a…Erin Mentuch, Alan Scott, Roberto Abraham et al.·Sep 3, 2008SaveLearn
Quantum slow-roll and quantum fast-roll inflationary initial conditions: CMB quadrupole suppression and further effects on the low CMB multipolesQuantum fast-roll initial conditions for the inflaton which are different from the classical fast-roll conditions and from the quantum slow-roll conditions can lead to inflation that last long…F. J. Cao, H. J. de Vega, N. G. Sanchez·Sep 3, 2008SaveLearn
Estimation of the Tilt of the Stellar Velocity Ellipsoid from RAVE and Implications for Mass ModelsWe present a measure of the inclination of the velocity ellipsoid at 1 kpc below the Galactic plane using a sample of red clump giants from the RAVE DR2 release. We find that the velocity ellipsoid…A. Siebert, O. Bienaymé, J. Binney et al.·Sep 3, 2008SaveLearn
Microstructure and kinematics of H2O masers in the massive star forming region IRAS 06061+2151We have made multi-epoch VLBI observations of H2O maser emission in the massive star forming region IRAS 06061+2151 with the Japanese VLBI network (JVN) from 2005 May to 2007 October. The detected…K. Motogi, Y. Watanabe, K. Sorai et al.·Sep 3, 2008SaveLearn
The Chemical Abundances of Tycho G in Supernova Remnant 1572We present an analysis of the chemical abundances of the star Tycho G in the direction of the remnant of supernova (SN) 1572, based on Keck high-resolution optical spectra. The stellar parameters of…Jonay I. González Hernández, Pilar Ruiz-Lapuente, Alexei V. Filippenko et al.·Sep 3, 2008SaveLearn
Tokyo Axion HelioscopeA new search result of the Tokyo axion helioscope is presented. The axion helioscope consists of a dedicated cryogen-free 4T superconducting magnet with an effective length of 2.3 m and PIN…M. Minowa, Y. Inoue, Y. Akimoto et al.·Sep 3, 2008SaveLearn
The Plasma Structure of the Southwestern Region of the Cygnus Loop with the XMM-Newton ObservatoryWe observed the southwestern region of the Cygnus Loop in two pointings with XMM-Newton. The region observed is called the "blow-out" region that is extended further in the south.…Hiroyuki Uchida, Hiroshi Tsunemi, Satoru Katsuda et al.·Sep 3, 2008SaveLearn
Orion Outlying CloudsIn this chapter we review the properties of the Orion outlying clouds at b < -21 degrees. These clouds are located far off the Orion giant molecular cloud complex and are in most cases small…Juan M. Alcalá, Elvira Covino, Silvio Leccia·Sep 3, 2008SaveLearn
Speckle Interferometry of Metal-Poor Stars in the Solar Neighborhood.IIThe results of speckle interferometric observations of 115 metal-poor stars [m/H]<-1 within 250 pc from the Sun and with proper motions mu <= 0.2"/yr, made with the 6-m telescope of the Special…D. A. Rastegaev, Yu. Yu. Balega, A. F. Maksimov et al.·Sep 3, 2008SaveLearn
The Extragalactic Distance Scale without CepheidsDistances of galaxies in the Hubble Space Telescope Key Project are based on the Cepheid period-luminosity relation. An alternative basis is the tip of the red giant branch. Using archival HST data,…Jeremy Mould, Shoko Sakai·Sep 3, 2008SaveLearn