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The JCMT Nearby Galaxies Legacy Survey – V. The CO(J= 3–2) distribution and molecular outflow in NGC 4631
galaxy star
2014/12/20
We have made the first map of CO(J= 3–2) emission covering the disc of the edge-on galaxy, NGC 4631, which is known for its spectacular gaseous halo. The strongest emission, which we model with a Gaus...
Dark Matter distribution in the Milky Way: microlensing and dynamical constraints
Dark Matter distribution Milky Way microlensing dynamical constraints
2011/10/20
We show that current microlensing and dynamical observations of the Galaxy allow to set interesting constraints on the Dark Matter local density and profile slope towards the galactic centre. Assuming...
Markov Stochastic Technique to Determine Galactic Cosmic Ray Sources Distribution
Cosmic rays ISM galactic locations stochastic processes
2010/9/15
A new numerical model of particle propagation in the Galaxy has been developed, which allows the study of cosmic-ray production and propagation in 2D. The model has been used to solve cosmic ray diffu...
Entropy Maximization, Cutoff Distribution, and Finite Stellar Masses
most probable distribution Finite Stellar Masses Most Probable Distribution
2009/9/4
Conventional equilibrium statistical mechanics of open gravitational systems is known to be problematical. We first recall that spherical stars/galaxies acquire unbounded radii, become infinitely mass...
Evolution of the Distribution of Neutron Exposures in the Galaxy Disc：An Analytical Model
Nucleosynthesis neutron exposures abundances stars:AGB stars:low-mass stars galaxy:evolution
2009/5/12
In this work, based on the analytical model with delayed production
approximation developed by Pagel & Tautvaiˇsien˙e (1995) for the
Galaxy, the analytic solutions of the distribution of neutron e...
An integrated distribution function is derived for visual double
stars according to the magnitude difference Δm between the components. For this
purpose the author uses a sample of 1626 double stars...