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6 papers · 2 filters
Elemental abundances and minimum mass of heavy elements in the envelope of HD 189733b
Olivier Mousis, Jonathan I. Lunine, Giovanna Tinetti +4
Oxygen (O) and carbon (C) have been inferred recently to be subsolar in abundance from spectra of the atmosphere of the transiting hot Jupiter HD 189733b. Yet, the mass and radius…
A primordial origin for the atmospheric methane of Saturn's moon Titan
Olivier Mousis, Jonathan I. Lunine, Matthew Pasek +5
The origin of Titan's atmospheric methane is a key issue for understanding the origin of the Saturnian satellite system. It has been proposed that serpentinization reactions in Tit…
The CN isotopic ratios in comets
J. Manfroid, E. Jehin, D. Hutsemékers +6
Our aim is to determine the isotopic ratios {C/C}{} and {N/N}{} in a variety of comets and link these measurements to the formation and evolution of the…
INPOP08, a 4-D planetary ephemeris: From asteroid and time-scale computations to ESA Mars Express and Venus Express contributions
A. Fienga, J. Laskar, T. Morley +6
The latest version of the planetary ephemerides developed at the Paris Observatory and at the Besancon Observatory is presented here. INPOP08 is a 4-dimension ephemeris since it pr…
Bulk composition of the transiting hot Neptune around GJ 436
P. Figueira, F. Pont, C. Mordasini +3
The hot Neptune orbiting around GJ 436 is a unique example of an intermediate mass planet. Its close-in orbit suggests that the planet has undergone migration and its study is fund…
Extrasolar planet population synthesis I: Method, formation tracks and mass-distance distribution
Christoph Mordasini, Yann Alibert, Willy Benz
With the high number of extrasolar planets discovered by now, it becomes possible to constrain theoretical formation models in a statistical sense. This paper is the first in a ser…