195 citations · 871 across the 17 of their papers we have counts for
14 papers · 1 filter
Six transiting planets and a chain of Laplace resonances in TOI-178
A. Leleu, Y. Alibert, N. C. Hara +152
Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the…
The past and future obliquity of Saturn as Titan migrates
Melaine Saillenfest, Giacomo Lari, Gwenaël Boué +1
Aims: It has recently been shown that the fast migration of Titan could be responsible for the current 26.7°-tilt of Saturn's spin axis. We aim to quantify the level of generality…
Cassini states of a rigid body with a liquid core
Gwenaël Boué
The purpose of this work is to determine the location and stability of the Cassini states of a celestial body with an inviscid fluid core surrounded by a perfectly rigid mantle. Bo…
AMD-stability in presence of first order Mean Motion Resonances
Antoine C. Petit, Jacques Laskar, Gwenaël Boué
The AMD-stability criterion allows to discriminate between a-priori stable planetary systems and systems for which the stability is not granted and needs further investigations. AM…
Detecting ring systems around exoplanets using high resolution spectroscopy: the case of 51Pegb
N. C. Santos, J. H. C. Martins, G. Boué +13
In this paper we explore the possibility that the recently detected reflected light signal of 51\,Peg\,b could be caused by a ring system around the planet. We use a simple model t…
Improvements on analytic modelling of stellar spots
M. Montalto, G. Boué, M. Oshagh +3
In this work we present the solution of the stellar spot problem using the Kelvin-Stokes theorem. Our result is applicable for any given location and dimension of the spots on the…
Probing the effect of gravitational microlensing on the measurements of the Rossiter-McLaughlin effect
M. Oshagh, G. Boué, P. Figueira +2
In general, in the studies of transit light-curves and the Rossiter-McLaughlin (RM), the contribution of the planet's gravitational microlensing is neglected. Theoretical studies,…
Impact of stellar companions on precise radial velocities
D. Cunha, P. Figueira, N. C. Santos +2
Context: With the announced arrival of instruments such as ESPRESSO one can expect that several systematic noise sources on the measurement of precise radial velocity will become t…
New analytical expressions of the Rossiter-McLaughlin effect adapted to different observation techniques
Gwenaël Boué, Marco Montalto, Isabelle Boisse +2
The Rossiter-McLaughlin (hereafter RM) effect is a key tool for measuring the projected spin-orbit angle between stellar spin axes and orbits of transiting planets. However, the me…
SOAP-T: A tool to study the light-curve and radial velocity of a system with a transiting planet and a rotating spotted star
M. Oshagh, I. Boisse, G. Boué +4
We present an improved version of SOAP (Boisse et al. 2012) named "SOAP-T", which can generate the radial velocity variations and light-curves for systems consisting of a rotating…
A simple model of the chaotic eccentricity of Mercury
Gwenaël Boué, Jacques Laskar, François Farago
Mercury's eccentricity is chaotic and can increase so much that collisions with Venus or the Sun become possible (Laskar, 1989, 1990, 1994, 2008, Batygin & Laughlin, 2008, Laskar &…
Comparing HARPS and Kepler surveys: The alignment of multiple-planet systems
P. Figueira, M. Marmier, G. Boué +6
Aims. We study a subset of the planetary population characterized both by HARPS and Kepler surveys. We compare the statistical properties of planets in systems with m.sin i >5-10 M…
Transit-timing measurements with the model-independent barycenter method: Application to the LHS 6343 system
M. Oshagh, G. Boué, N. Haghighipour +3
We present a model-independent technique for calculating the time of mid-transits. This technique, named "barycenter method", uses the light-curve's symmetry to determine the trans…
Exoplanets transmission spectroscopy: accounting for eccentricity and longitude of periastron. Superwinds in the upper atmosphere of HD209458b?
M. Montalto, N. C. Santos, I. Boisse +3
Context: Several studies have so far placed useful constraints on planetary atmospheric properties using transmission spectrsocopy, and in the case of HD209458b even the radial vel…