A long-term numerical solution for the insolation quantities of the Earth
- J. Laskar, P. Robutel, B. Levrard
- Physics, Environmental Science
- 1 December 2004
We present here a new solution for the astronomical computation of the insolation quantities on Earth spanning from -250 Myr to 250 Myr. This solution has been improved with respect to La93 (Laskar…
Long term evolution and chaotic diffusion of the insolation quantities of Mars
- J. Laskar, A. Correia, M. Gastineau, F. Joutel, B. Levrard, P. Robutel
- Physics, Geology
- 1 August 2004
An extrasolar planetary system with three Neptune-mass planets
Simulations show that the system of three Neptune-mass planets orbiting the nearby star HD 69830 is in a dynamically stable configuration and theoretical calculations favour a mainly rocky composition for both inner planets, while the outer planet probably has a significant gaseous envelope surrounding its rocky/icy core.
Mercury's capture into the 3/2 spin-orbit resonance as a result of its chaotic dynamics
- A. Correia, J. Laskar
- Physics, GeologyNature
- 24 June 2004
It is shown that the chaotic evolution of Mercury's orbit can drive its eccentricity beyond 0.325 during the planet's history, which very efficiently leads to its capture into the 3/2 resonance.
The HARPS search for southern extra-solar planets - XIX. Characterization and dynamics of the GJ 876 planetary system
- A. Correia, J. Couetdic, S. Udry
- Physics, Geology
- 26 January 2010
Precise radial-velocity measurements for data acquired with the HARPS spectrograph infer that three planets orbit the M4 dwarf star GJ876. In particular, we confirm the existence of planet d, which…
Deformation and tidal evolution of close-in planets and satellites using a Maxwell viscoelastic rheology
- A. Correia, G. Boué, J. Laskar, Adrián Rodríguez
- Geology, Physics
- 1 November 2014
In this paper we present a new approach to tidal theory. Assuming a Maxwell viscoelastic rheology, we compute the instantaneous deformation of celestial bodies using a differential equation for the…
The CORALIE survey for southern extra-solar planets - XIII. A pair of planets around HD 202206 or a circumbinary planet?
- A. Correia, S. Udry, N. Santos
- Physics, Geology
- 17 November 2004
Long-term precise Doppler measurements with the CORALIE spectrograph reveal the presence of a second planet orbiting the solar-type star HD 202206. The radial-velocity combined fit yields companion…
Tidal evolution of hierarchical and inclined systems
- A. Correia, J. Laskar, François Farago, G. Boué
- Geology, Physics
- 4 July 2011
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 inclination is relatively…
The HARPS search for southern extra-solar planets - XXVIII. Up to seven planets orbiting HD 10180: probing the architecture of low-mass planetary systems
- C. Lovis, D. S'egransan, N. Santos
- Physics, Geology
- 23 November 2010
Low-mass extrasolar planets are presently being discovered at an increased pace by radial velocity and transit surveys, which opens a new window on planetary systems. Aims. We are conducting a…
The four final rotation states of Venus
- A. Correia, J. Laskar
- Physics, GeologyNature
- 14 June 2001
Here it is shown that independent of uncertainties in the models, terrestrial planets with dense atmosphere like Venus can evolve into one of only four possible rotation states, and that most initial conditions will drive the planet towards the configuration at present seen at Venus, albeit through two very different evolutionary paths.
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