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Drifts of the sub-stellar points of the TRAPPIST-1 planets
Revol Alexandre, Émeline Bolmont, Mariana Sastre +4
Accurate modeling of tidal interactions is crucial for interpreting recent JWST observations of the thermal emissions of TRAPPIST-1~b and c and for characterizing the surface condi…
On the influence of equilibrium tides on transit-timing variations of close-in super-Earths. I. Application to single-planet systems and the case of K2-265 b
Gabriel de Oliveira Gomes, Emeline Bolmont, Sergi Blanco-Cuaresma
In this work, we investigate the influence of planetary tidal interactions on the transit-timing variations of short-period low-mass rocky exoplanets. For such purpose, we employ t…
On the impact of tides on the transit-timing fits to the TRAPPIST-1 system
Emeline Bolmont, Brice-Olivier Demory, Sergi Blanco-Cuaresma +5
Transit Timing Variations, or TTVs, can be a very efficient way of constraining masses and eccentricities of multi-planet systems. Recent measurements of the TTVs of TRAPPIST-1 led…
Transiting planet candidate from K2 with the longest period
H. A. C. Giles, H. P. Osborn, S. Blanco-Cuaresma +8
Context: We present the transit and follow-up of a single transit event from Campaign 14 of K2, EPIC248847494b, which has a duration of 54 hours and a 0.18% depth. Aims: Using phot…
Gaia Data Release 2: Observations of solar system objects
Gaia Collaboration, F. Spoto, P. Tanga +4
The Gaia spacecraft of the European Space Agency (ESA) has been securing observations of solar system objects (SSOs) since the beginning of its operations. Gaia Data Release 2 (DR2…
Studying tidal effects in planetary systems with Posidonius. A N-body simulator written in Rust
Sergi Blanco-Cuaresma, Emeline Bolmont
Planetary systems with several planets in compact orbital configurations such as TRAPPIST-1 are surely affected by tidal effects. Its study provides us with important insight about…
How uncertainties on stellar atmospheric parameters impact exoplanet studies?
Sergi Blanco-Cuaresma
Exoplanet properties depend on how well the host star is characterized. For instance, the stellar atmospheric parameters (i.e., effective temperature, surface gravity and overall m…
EPIC 228735255b - An eccentric 6.57 day transiting hot Jupiter in Virgo
H. A. C. Giles, D. Bayliss, N. Espinoza +25
We present the discovery of EPIC 228735255b, a P= 6.57 days Jupiter-mass (M=1.0190.070 M) planet transiting a V=12.5 (G5-spectral type) star in an eccentric orbit…
Ground-based photometry of the 21-day Neptune HD106315c
M. Lendl, D. Ehrenreich, O. D. Turner +6
Space-based transit surveys such as K2 and TESS allow the detection of small transiting planets with orbital periods beyond 10 days. Few of these warm Neptunes are currently known…