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The global dust SED: Tracing the nature and evolution of dust with DustEM
Galaxy Astrophysics (astro-ph.GA)
2011/1/4
The Planck and Herschel missions are currently measuring the farIR-mm emission of dust, which combined with existing IR data, will for the first time provide the full SED of the galactic ISM dust emis...
Binary YORP and Evolution of Binary Asteroids
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/31
The rotation states of kilometer sized near earth asteroids are known to be affected by the YORP effect.
We present a novel theoretical tool to analyze the dynamical behaviour of a Be disk fed by non-constant decretion rates. It is mainly based on the computer code HDUST, a fully three-dimensional radiat...
The evolution of luminosity, colour and the mass-to-luminosity ratio of Galactic open clusters: comparison of discrete vs. continuous IMF models
Galaxy Astrophysics (astro-ph.GA)
2010/12/29
We found in previous studies that standard Simple Stellar Population (SSP) models are unable to describe or explain the colours of Galactic open clusters both in the visible and in the NIR spectral ra...
Chemically homogeneous evolution in massive binaries
Solar and Stellar Astrophysics (astro-ph.SR) High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/28
Rotation can have severe consequences for the evolution of massive stars. It is now considered as one of the main parameters, alongside mass and metallicity that determine the final fate of single sta...
Evolution and nucleosynthesis of extremely metal-poor and metal-free low- and intermediate-mass stars II. s-process nucleosynthesis during the core He flash
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/28
Models of primordial and hyper-metal-poor stars with masses similar to the Sun experience an ingestion of protons into the hot core during the core helium flash phase at the end of their red giant bra...
The evolution of stellar structures in dwarf galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
We present a study of the variation of spatial structure of stellar populations within dwarf galaxies as a function of the population age. We use deep Hubble Space Telescope/Advanced Camera for Survey...
On the evolution of intra-cluster gas within Galactic globular clusters
Solar and Stellar Astrophysics (astro-ph.SR) Galaxy Astrophysics (astro-ph.GA)
2010/12/27
It has been known since the 1950's that the observed gas content of Galactic globular clusters (GCs) is 2-3 orders of magnitude less than the mass lost by stars between Galactic disk crossings.
A Monte Carlo Approach to Evolution of the Far-Infrared Luminosity Function with BLAST
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
We constrain the evolution of the rest-frame far-infrared (FIR) luminosity function out to z~3.5 by combining several pieces of complementary information provided by the deep Balloon-borne Large-Apert...
The Hubble Space Telescope GOODS NICMOS Survey: Overview and the Evolution of Massive Galaxies at 1.5 < z < 3
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
We present the details and early results from a deep near-infrared survey utilising the NICMOS instrument on the Hubble Space Telescope centred around massive M_* > 10^11 M_0 galaxies at 1.7 < z < 2.9...
Modeling the evolution of infrared galaxies: A Parametric backwards evolution model
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
We aim at modeling the infrared galaxy evolution in an as simple as possible way and reproduce statistical properties among which the number counts between 15 microns and 1.1 mm, the luminosity functi...
Wolf-Rayet Central Stars of Planetary Nebulae: Their Evolution and Properties
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/24
Over the past decade, the number of planetary nebula central stars (CSPN) known to exhibit the Wolf-Rayet (WR) phenomenon has grown substantially. Many of these discoveries have resulted from the Macq...
Protoplanetary disc evolution and dispersal: the implications of X-ray photoevaportion
Solar and Stellar Astrophysics (astro-ph.SR) Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/24
We explore the role of X-ray photoevaporation in the evolution and dispersal of viscously evolving T-Tauri discs. We show that the X-ray photoevaporation wind rates scale linearly with X-ray luminosit...
Quantum Vacuum influence on the evolution of Pulsars
Solar and Stellar Astrophysics (astro-ph.SR) Quantum Physics (quant-ph)
2010/12/23
In this letter we show that Quantum Vacuum Friction (QVF) should play an important role in neutron star evolution. Taking into account this effect we show that magnetars could be understood as a natur...
Dirac neutrino magnetic moment and a possible time evolution of the neutrino signal from a supernova
High Energy Astrophysical Phenomena (astro-ph.HE) High Energy Physics - Phenomenology (hep-ph)
2010/12/23
We analyze the influence of neutrino helicity conversion, $\nu_L \to \nu_R$, on the neutrino flux from a supernova caused by the interaction of the Dirac neutrino magnetic moment with a magnetic field...