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The Mass Distribution of Stellar-Mass Black Holes
Mass Distribution Stellar-Mass Black Holes
2010/11/11
We perform a Bayesian analysis of the mass distribution of stellar-mass black holes using the observed masses of 15 low-mass X-ray binary systems undergoing Roche lobe overflow and five high-mass, win...
Deuterated formaldehyde in rho Ophiuchi A
astrochemistry – ISM abundances – ISM clouds – ISM individual objects ρ Oph A – ISM molecules
2010/11/16
Context. Formaldehyde is an organic molecule that is abundant in the interstellar medium. High deuterium fractionation is a common feature in low-mass star-forming regions. Observing several isotopolo...
Chemistry in Evaporating Ices: Unexplored Territory
astrochemistry – ISM molecules ISM clouds
2010/11/15
We suggest that three–body chemistry may occur in warm high density gas evaporating in transient co–desorption events on interstellar ices. Using a highly idealised computational model we explore the ...
The mass-loss rates and molecular abundances of S-type AGB stars
mass-loss rates molecular abundances of S-type AGB stars
2010/11/12
The S-type stars are believed to have a C/O-ratio close to unity (within a few percent). They are considered to represent an intermediate evolutionary stage as AGB stars evolve from oxygen-rich M-type...
CS Lines Profiles in Hot Cores
astrochemistry—line profiles—methods numerical—stars formation—ISM
2010/11/11
We present a theoretical study of CS line profiles in archetypal hot cores. We provide estimates of line fluxes from the CS(1-0) to the CS(15-14) transitions and present the temporal variation of thes...
Galaxy clustering and projected density profiles as traced by satellites in photometric surveys: Methodology and luminosity dependence
Galaxy clustering projected density profiles photometric surveys
2010/11/12
We develop a new method which measures the projected density distribution wp(rp)n of photometric galaxies surrounding a set of spectroscopically-identified galaxies, and simultaneously the projected c...
Intracluster supernovae in the Multi-epoch Nearby Cluster Survey
Intracluster supernovae Multi-epoch Nearby Cluster Survey
2010/11/11
The Multi-Epoch Nearby Cluster Survey (MENeaCS) has discovered twenty-two cluster Type Ia
supernovae (SNe) in the 58 X-ray selected galaxy clusters (0.05. z .0.15) surveyed. Four of our
SN Ia events...
Instruments of RT-2 Experiment onboard CORONAS-PHOTON and their test and evaluation I: Ground calibration of RT-2/S and RT-2/G
Scintillation detectors · X
2010/11/16
Phoswich detectors (RT-2/S & RT-2/G) are major scientific payloads of the RT-2 Experiment onboard the CORONAS-PHOTON mission, which was launched into a polar Low Earth Orbit of around 550 km on 2009 J...
The black hole in NGC 1313 X-2
galaxies NGC 1313 – stars individual (NGC 1313 X-2) – X-rays binaries – X-rays galaxies – X-rays
2010/11/12
The amount of data available for NGC 1313 X-2 make it a cornerstone for the study of ultraluminous X-ray sources(ULXs). We modelled the optical and X-ray data of this ULX with a binary evolution code ...
Simulating Heliospheric and Solar Particle Diffusion using the Parker Spiral Geometry
Simulating Heliospheric Solar Particle Diffusion Parker Spiral Geometry
2010/11/16
Cosmic Ray transport in curved background magnetic fields is investigated using numerical Monte-Carlo simulation techniques. Special emphasis is laid on the So-lar system, where the curvature of the m...
Classical Cepheids: Yet another version of the Baade-Becker-Wesselink method
Cepheids luminosities radii color excess
2010/11/16
We propose a new version of the Baade–Becker–Wesselink technique, which allows one to independently determine the colour excess and the intrinsic colour of a radially pulsating star, in addition to it...
The effect of coronal radiation on a residual inner disk in the low/hard spectral state of black hole X-ray binary systems
accretion accretion disks — black hole physics —X-rays bi-naries — X-rays stars
2010/11/15
Thermal conduction between a cool accretion disk and a hot inner corona can result in either evaporation of the disk or condensation of the hot corona. At low mass accretion rates, evaporation dominat...
Calibrating Galaxy Redshifts Using Absorption by the Surrounding Intergalactic Medium
galaxies high-redshift intergalactic medium quasars absorption lines
2010/11/11
Rest-frame UV spectral lines of star-forming galaxies are systematically offset fromthe galaxies’systemic redshifts, probably because of large-scale outflows.We calibrate galaxy redshifts measured fro...
If the dark matter of our galaxy is composed of nuggets of quarks or antiquarks in a colour superconducting phase there will be a small but non-zero ux of these objects through the Earth's atmosphere.
Solar twins in M67 : Evolutionary status and lithium abundance
Stars fundamental parameters – Stars abundances – Stars evolution – Stars interiors – Stars solar-type
2010/11/11
Aims. We determine the age and mass of the three best solar twin candidates in open cluster M67 through lithium evolutionary models.Methods. We computed a grid of evolutionary models with non-standard...