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15 papers · 1 filter
The ultracool eld dwarfs luminosity function from the Canada-France Brown Dwarf Survey
C. Reyle, P. Delorme, X. Delfosse +4
The Canada-France Brown Dwarf Survey is a wide eld survey for cool brown dwarfs conducted with the MegaCam camera on the CFHT telescope. Our objectives are to nd ultracool brown dw…
The Milky Way's external disc constrained by 2MASS star counts
C. Reyle, D. J. Marshall, A. C. Robin +1
Context. Thanks to recent large scale surveys in the near infrared such as 2MASS, the galactic plane that most suffers from extinction is revealed and its overall structure can be…
Determination of the minimum masses of heavy elements in the envelopes of Jupiter and Saturn
Olivier Mousis, Ulysse Marboeuf, Jonathan I. Lunine +5
We calculate the minimum mass of heavy elements required in the envelopes of Jupiter and Saturn to match the observed oversolar abundances of volatiles. Because the clathration eff…
Photometric redshifts for the CFHTLS T0004 Deep and Wide fields
J. Coupon, O. Ilbert, M. Kilbinger +15
We compute photometric redshifts based on the template-fitting method in the fourth public release of the Canada-France-Hawaii Telescope Legacy Survey. This unique multi-colour cat…
Interstellar Extinction and Long-Period Variables in the Galactic Center
M. Schultheis, K. Sellgren, S. Ramirez +4
We use the Spitzer IRAC catalogue of the Galactic Center (GC) point sources (Ramirez et al. 2008) and combine it with new isochrones (Marigo et al. 2008) to derive extinctions base…
Variability of the methane trapping in martian subsurface clathrate hydrates
Caroline Thomas, Olivier Mousis, Sylvain Picaud +1
Recent observations have evidenced traces of methane CH4 heterogeneously distributed in the martian atmosphere. However, because the lifetime of CH4 in the atmosphere of Mars is es…