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13 papers · 1 filter
Hamiltonian study for Chern-Simons and Pontryagin theories
Alberto Escalante, Leopoldo Carbajal
The Hamiltonian analysis for the Chern-Simons theory and Pontryagin invariant, which depends of a connection valued in the Lie algebra of SO(3,1), is performed. By applying a pure…
Mining the CFHT Legacy Survey for known Near Earth Asteroids
O. Vaduvescu, A. Tudorica, M. Birlan +5
The Canada-France-Hawaii Legacy Survey (CFHTLS) comprising about 25 000 MegaCam images was data mined to search for serendipitous encounters of known Near Earth Asteroids (NEAs) an…
Tidal evolution of hierarchical and inclined systems
Alexandre C. M. Correia, Jacques Laskar, François Farago +1
We investigate the dynamical evolution of hierarchical three-body systems under the effect of tides, when the ratio of the orbital semi-major axes is small and the mutual inclinati…
The close circumstellar environment of Betelgeuse - II. Diffraction-limited spectro-imaging from 7.76 to 19.50 microns with VLT/VISIR
Pierre Kervella, Guy Perrin, Andrea Chiavassa +4
Context: Mass-loss occurring in red supergiants (RSGs) is a major contributor to the enrichment of the interstellar medium in dust and molecules. The physical mechanism of this mas…
Spectroscopic Survey of X-type Asteroids
Sonia Fornasier, Beth E. Clark, Elisabetta Dotto
We present reflected light spectral observations from 0.4 to 2.5 micron of 24 asteroids chosen from the population of asteroids initially classified as Tholen X-type objects (Thole…
Chemi-ionization in Solar Photosphere: Influence on the Hydrogen Atom excited States Population
Anatolij A. Mihajlov, Ljubinko M. Ignjatovic, Vladimir A. Sreckovic +1
In this paper, the influence of chemi-ionization processes in collisions, as well as the influence of inverse chemi-recombination processes on hydrogen atom…