Equilibria in the secular, non-coplanar two-planet problemWe investigate the secular dynamics of a planetary system composed of the parent star and two massive planets in mutually inclined orbits. The dynamics are investigated in wide ranges of semi-major…Cezary Migaszewski, Krzysztof Gozdziewski·Dec 16, 2008SaveLearn
The First High-Precision Radial Velocity Search for Extra-Solar PlanetsIn the late 1970s and early 1980s, the introduction of solid-state, signal-generating detectors and absorption cells to impose wavelength fiducials directly on the starlight, the errors in stellar…Gordon A. H. Walker·Dec 16, 2008SaveLearn
Significant Limb-Brightening in the Inner Parsec of Markarian 501We present three 43 GHz images and a single 86 GHz image of Markarian 501 from VLBA observations in 2005. The 86 GHz image shows a partially resolved core with a flux density of about 200 mJy and a…B. Glenn Piner, Niraj Pant, Philip G. Edwards et al.·Dec 16, 2008SaveLearn
The Peculiar Shape of the Beta(app)-z Distribution Seen in Radio Loud AGN Jets Is Explained Simply and Naturally In the Local Quasar ModelRecently, it was argued that the log(z)-mv plot of 106,000 AGN galaxies could be interpreted as an evolutionary path followed by local AGN galaxies as they age. It was suggested that these objects…M. B. Bell·Dec 16, 2008SaveLearn
Cosmological constraints on unifying Dark Fluid modelsIn the standard model of cosmology, dark matter and dark energy are presently the two main contributors to the total energy in the Universe. However, these two dark components are still of unknown…A. Arbey·Dec 16, 2008SaveLearn
Fluorine in AGB Carbon Stars RevisitedA reanalysis of the fluorine abundance in three Galactic AGB carbon stars (TX Psc, AQ Sgr and R Scl) has been performed from the molecular HF (1-0) R9 line at 2.3358 μm. High-resolution (R$…C. Abia, A. Recio-Blanco, P. de Laverny et al.·Dec 16, 2008SaveLearn
The Clustering Behavior of Pre-Main Sequence Stars in NGC 346 in the Small Magellanic CloudWe present evidence that the star-forming region NGC 346/N66 in the Small Magellanic Cloud is the product of hierarchical star formation, probably from more than one star formation event. We…S. Schmeja, D. A. Gouliermis, R. S. Klessen·Dec 16, 2008SaveLearn
HeII->HeI Recombination of Primordial Helium Plasma Including the Effect of Neutral HydrogenThe HeII->HeI recombination of primordial helium plasma (z = 1500 - 3000) is considered in terms of the standard cosmological model. This process affects the formation of cosmic microwave background…E. E. Kholupenko, A. V. Ivanchik, D. A. Varshalovich·Dec 16, 2008SaveLearn
Faint recombination lines in Galactic PNe with [WC] nucleusWe present spatially resolved high-resolution spectrophotometric data for the planetary nebulae PB8, NGC2867, and PB6. We have analyzed two knots in NGC2867 and PB6 and one in PB8. The three nebulae…Jorge Garcia-Rojas, Miriam Peña, Antonio Peimbert·Dec 16, 2008SaveLearn
Cosmological density perturbations in modified gravity theoriesIn the context of f(R) theories of gravity, we study the cosmological evolution of scalar perturbations by using a completely general procedure. We find that the exact fourth-order differential…A. de la Cruz-Dombriz, A. Dobado, A. L. Maroto·Dec 16, 2008SaveLearn
Axions and the white dwarf luminosity functionThe evolution of white dwarfs can be described as a simple cooling process. Recently, it has been possible to determine with an unprecedented precision their luminosity function, that is, the number…J. Isern, S. Catalan, E. Garcia-Berro et al.·Dec 16, 2008SaveLearn
Properties of the ionized gas in HH202. I: Results from integral field spectroscopy with PMASWe present results from integral field spectroscopy with the Potsdam multi-Aperture Spectrograph of the head of the Herbig-Haro object HH 202 with a spatial sampling of 1"x1". We have…A. Mesa-Delgado, L. López-Martín, C. Esteban et al.·Dec 16, 2008SaveLearn
MAGIC Observations of PG 1553+113 during a Multiwavelength Campaign in July 2006The active galactic nucleus PG 1553+113 was observed by the MAGIC telescope in July 2006 during a multiwavelength campaign, in which telescopes in the optical, X-ray, and very high energies…MAGIC Collaboration, Albert·Dec 16, 2008SaveLearn
Phase resolved spectroscopy of the accreting millisecond X-ray pulsar SAX J1808.4-3658 during the 2008 outburstaims: We obtained phase-resolved spectroscopy of the accreting millisecond X-ray pulsar SAX J1808.4-3658 during its outburst in 2008 to find a signature of the donor star, constrain its radial…R. Cornelisse, P. D'Avanzo, T. Munoz-Darias et al.·Dec 16, 2008SaveLearn
Intermediate-Mass Black Holes as LISA SourcesIntermediate-mass black holes (IMBHs), with masses of hundreds to thousands of solar masses, will be unique sources of gravitational waves for LISA. Here we discuss their context as well as specific…M. Coleman Miller·Dec 16, 2008SaveLearn
On the oscillations of dissipative superfluid neutron starsWe investigate the oscillations of slowly rotating superfluid stars, taking into account the vortex mediated mutual friction force that is expected to be the main damping mechanism in mature neutron…N. Andersson, K. Glampedakis, B. Haskell·Dec 16, 2008SaveLearn
Dwarf Galaxy Clustering and Missing SatellitesAt redshifts around 0.1 the CFHT Legacy Survey Deep fields contain some 6x104 galaxies spanning the mass range from 105 to 1012 Msun. We measure the stellar mass dependence of the two point…R. G. Carlberg, M. Sullivan, D. Le Borgne·Dec 16, 2008SaveLearn
Magneto--thermal evolution of neutron starsWe study the mutual influence of thermal and magnetic evolution in a neutron star's crust in axial symmetry. Taking into account realistic microphysical inputs, we find the heat released by Joule…J. A. Pons, J. A. Miralles, U. Geppert·Dec 16, 2008SaveLearn
Profiles of emission lines generated by rings orbiting braneworld Kerr black holesIn the framework of the braneworld models, rotating black holes can be described by the Kerr metric with a tidal charge representing the influence of the non-local gravitational (tidal) effects of…Jan Schee, Zdenek Stuchlik·Dec 16, 2008SaveLearn
The Study of Relatively Low Density Stellar Matter in Presence of Strong Quantizing Magnetic FieldThe effect of strong quantizing magnetic field on the equation of state of matter at the outer crust region of magnetars is studied. The density of such matter is low enough compared to the matter…Nandini Nag, Sutapa Ghosh, Somenath Chakrabarty·Dec 16, 2008SaveLearn
The VLA Survey of the Chandra Deep Field South. IV. Source PopulationWe present a detailed analysis of 256 radio sources from our deep (flux density limit of 42 microJy at the field centre at 1.4 GHz) Chandra Deep Field South 1.4 and 5 GHz VLA survey. The radio…P. Padovani, V. Mainieri, P. Tozzi et al.·Dec 16, 2008SaveLearn
Testing the cosmological evolution of magnetic fields in galaxies with the SKAWe investigate the cosmological evolution of large- and small-scale magnetic fields in galaxies at high redshifts. Results from simulations of hierarchical structure formation cosmology provide a…Tigran G. Arshakian, Rainer Beck, Marita Krause et al.·Dec 16, 2008SaveLearn
Hard (State) ProblemsFor microquasars, the one time when these systems exhibit steady and powerful jets is when they are in the hard state. Thus, our understanding of this state is key to learning about the disk/jet…John A. Tomsick·Dec 16, 2008SaveLearn
Parallel Algorithm for Solving Kepler's Equation on Graphics Processing Units: Application to Analysis of Doppler Exoplanet Searches[Abridged] We present the results of a highly parallel Kepler equation solver using the Graphics Processing Unit (GPU) on a commercial nVidia GeForce 280GTX and the "Compute Unified Device…Eric B. Ford·Dec 16, 2008SaveLearn
An XMM-Newton Spectral and Timing Study of IGR J16207-5129: An Obscured and Non-Pulsating HMXBWe report on a 12 hr XMM-Newton observation of the supergiant High-Mass X-ray Binary IGR J16207-5129. This is only the second soft X-ray (0.4-15 keV, in this case) study of the source since it was…John A. Tomsick, Sylvain Chaty, Jerome Rodriguez et al.·Dec 16, 2008SaveLearn