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Young binary star system may form planets with weird and wild orbits
Young binary star system planets with weird wild orbits
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2014/8/14
Unlike our solitary Sun, most stars form in binary pairs -- two stars that orbit a common center of mass. Though remarkably plentiful, binaries pose a number of questions, including how and where plan...
Statistical mechanics of collisionless orbits. I. Origin of central cusps in dark-matter halos
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Statistical Mechanics (cond-mat.stat-mech)
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2010/12/23
We present an equilibrium statistical mechanical theory of collisionless self-gravitational systems with isotropic velocity distributions.
Origin and Dynamics of the Mutually Inclined Orbits of Upsilon Andromedae c and d
Origin Dynamics Mutually Inclined Orbits
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2010/11/12
We evaluate the orbital evolution and several plausible origins scenarios for the mutually inclined orbits of υ And c and d. These two planets have orbital ele-ments that oscillate with large amplitud...
Asymptotic Orbits in Barred Spiral Galaxies
Instrumentation and Methods for Astrophysics (astro-ph.IM)
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2010/12/28
We study the formation of the spiral structure of barred spiral galaxies, using an $N$-body model. The evolution of this $N$-body model in the adiabatic approximation maintains a strong spiral pattern...
Statistical mechanics of collisionless orbits. III. Comparison with N-body simulations
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/23
We compare the DARKexp differential energy distribution, N(E) \propto \exp(\phi_0-E)-1, obtained from statistical mechanical considerations, to the results of N-body simulations of dark matter halos.
Statistical mechanics of collisionless orbits. III. Comparison with N-body simulations
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/23
We compare the DARKexp differential energy distribution, N(E) \propto \exp(\phi_0-E)-1, obtained from statistical mechanical considerations, to the results of N-body simulations of dark matter halos.
Statistical mechanics of collisionless orbits. II. Structure of halos
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Statistical Mechanics (cond-mat.stat-mech)
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2010/12/23
In this paper, we present the density, \rho, velocity dispersion, \sigma, and \rho/\sigma^3 profiles of isotropic systems which have the energy distribution, N(E)\propto[\exp(\phi_0-E)-1], derived in ...
Statistical mechanics of collisionless orbits. I. Origin of central cusps in dark-matter halos
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Statistical Mechanics (cond-mat.stat-mech)
<
2010/12/23
We present an equilibrium statistical mechanical theory of collisionless self-gravitational systems with isotropic velocity distributions.
Perturbation of heliosynchronous orbits in stable Kaluza-Klein theory
heliosynchronous orbits stable Kaluza-Klein theory
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2010/3/8
Although the methods and techniques have been greatly improved since the late nineteenth century, the precision on the measurement of the gravitational constant G does not exceed 1 part in 1000. Intri...
From speckle measurements to computation of the binary system orbits at the Astronomical Observatory R. M. Aller
binary system orbits Astronomical Observatory R. M. Aller
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2009/6/26
From speckle measurements to computation of the binary system orbits at the Astronomical Observatory R. M. Aller。
Galactic Orbits of Globular Clusters in a Barred Galaxy
Galactic Orbits Barred Galaxy Globular Clusters
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2009/6/26
Galactic Orbits of Globular Clusters in a Barred Galaxy。
Orbits of Six Binary Stars
Six Binary Stars Orbits
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2009/6/25
Orbits of Six Binary Stars。
Herbig-Haro Jets from Sources in Elliptical Orbits。
Multiple stars with both inner and outer orbits observed Spectroscopically
Multiple stars orbits
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2009/6/16
Multiple stars with both inner and outer orbits observed Spectroscopically。
Dynamics of Galactic Satellites on Elongated Orbits
Galactic Satellites Elongated Orbits
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2009/6/10
Dynamics of Galactic Satellites on Elongated Orbits。