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29 papers · 2 filters
Habitable planets around the star Gl 581?
Franck Selsis, J. F. Kasting, B. Levrard +3
Radial velocity surveys are now able to detect terrestrial planets at habitable distance from M-type stars. Recently, two planets with minimum masses below 10 Earth masses were rep…
A proof that tidal heating in a synchronous rotation is always larger than in an asymptotic nonsynchronous rotation state
Benjamin Levrard
In a recent paper, Wisdom (2007, Icarus, in press) derived concise expressions for the rate of tidal dissipation in a synchronously rotating body for arbitrary orbital eccentricity…
Towards a Solution for the Ca II Triplet Puzzle : Results from Dwarf Elliptical Galaxies
Dolf Michielsen, Mina Koleva, Philippe Prugniel +6
We present new estimates of ages and metallicities, based on FORS/VLT optical (4400-5500A) spectroscopy, of 16 dwarf elliptical galaxies (dE's) in the Fornax Cluster and in Souther…
Formation of central massive objects via tidal compression
Eric Emsellem, Glenn van de Ven
For a density that is not too sharply peaked towards the center, the local tidal field becomes compressive in all three directions. Available gas can then collapse and form a clust…
Theory of cooling neutron stars versus observations
D. G. Yakovlev, O. Y. Gnedin, A. D. Kaminker +1
We review current state of neutron star cooling theory and discuss the prospects to constrain the equation of state, neutrino emission and superfluid properties of neutron star cor…
Fast and Slow Rotators: The build-up of the Red Sequence
Eric Emsellem, Michele Cappellari, Davor Krajnovic +11
Using the unique dataset obtained within the course of the SAURON project, a radically new view of the structure, dynamics and stellar populations of early-type galaxies has emerge…