214 citations · 747 across the 21 of their papers we have counts for
21 papers
TOI-5005 b: A super-Neptune in the savanna near the ridge
A. Castro-González, J. Lillo-Box, D. J. Armstrong +38
The Neptunian desert and savanna have recently been found to be separated by a ridge, an overdensity of planets in the period range of 3-5 days. These features are thought…
TOI-4438 b: a transiting mini-Neptune amenable to atmospheric characterization
E. Goffo, P. Chaturvedi, F. Murgas +47
We report the confirmation and mass determination of a mini-Neptune transiting the M3.5 V star TOI-4438 (G 182-34) every 7.44 days. A transit signal was detected with NASA's TESS s…
The SOPHIE search for northern extrasolar planets-XIX. A system including a cold sub-Neptune potentially transiting a V = 6.5 star HD88986
N. Heidari, I. Boisse, N. C. Hara +51
Transiting planets with orbital periods longer than 40 d are extremely rare among the 5000+ planets discovered so far. The lack of discoveries of this population poses a challenge…
No thick carbon dioxide atmosphere on the rocky exoplanet TRAPPIST-1 c
Sebastian Zieba, Laura Kreidberg, Elsa Ducrot +16
Seven rocky planets orbit the nearby dwarf star TRAPPIST-1, providing a unique opportunity to search for atmospheres on small planets outside the Solar System (Gillon et al., 2017)…
An unusually low-density super-Earth transiting the bright early-type M-dwarf GJ 1018 (TOI-244)
A. Castro-González, O. D. S. Demangeon, J. Lillo-Box +34
Small planets located at the lower mode of the bimodal radius distribution are generally assumed to be composed of iron and silicates in a proportion similar to that of the Earth.…
Interior-atmosphere modelling to assess the observability of rocky planets with JWST
Lorena Acuna, Magali Deleuil, Olivier Mousis
There is a degeneracy in the interior structure between a planet that has no atmosphere and a small Fe content, and a planet that has a thin atmosphere and a higher core mass fract…
TOI-733 b: a planet in the small-planet radius valley orbiting a Sun-like star
Iskra Y. Georgieva, Carina M. Persson, Elisa Goffo +40
We report the discovery of a hot ( 1055 K) planet in the small planet radius valley transiting the Sun-like star TOI-733, as part of the KESPRINT follow-up pr…
The young mini-Neptune HD 207496b that is either a naked core or on the verge of becoming one
S. C. C. Barros, O. D. S. Demangeon, D. J. Armstrong +40
We report the discovery and characterisation of the transiting mini-Neptune HD~207496~b (TOI-1099) as part of a large programme that aims to characterise naked core planets. We obt…
Optical and near-infrared stellar activity characterization of the early M dwarf Gl~205 with SOPHIE and SPIRou
P. Cortes-Zuleta, I. Boisse, B. Klein +41
The stellar activity of M dwarfs is the main limitation for discovering and characterizing exoplanets orbiting them since it induces quasi-periodic RV variations. We aim to charact…
TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter
J. Lillo-Box, D. Gandolfi, D. J. Armstrong +60
The current architecture of a given multi-planetary system is a key fingerprint of its past formation and dynamical evolution history. Long-term follow-up observations are key to c…
Characterization of the HD 108236 system with CHEOPS and TESS. Confirmation of a fifth transiting planet
S. Hoyer, A. Bonfanti, A. Leleu +87
The HD108236 system was first announced with the detection of four small planets based on TESS data. Shortly after, the transit of an additional planet with a period of 29.54d was…
TOI-2196 b: Rare planet in the hot Neptune desert transiting a G-type star
Carina M. Persson, Iskra Y. Georgieva, Davide Gandolfi +52
Highly irradiated planets in the hot Neptune desert are usually either small (R < 2 Rearth) and rocky or they are gas giants with radii of >1 Rjup. Here, we report on the intermedi…
A Reanalysis of the Composition of K2-106b: an Ultra-short Period Super-Mercury Candidate
Romy Rodríguez Martínez, B. Scott Gaudi, Joseph G. Schulze +9
We present a reanalysis of the K2-106 transiting planetary system, with a focus on the composition of K2-106b, an ultra-short period, super-Mercury candidate. We globally model exi…
Detailed chemical compositions of planet-hosting stars: II. Exploration of the interiors of terrestrial-type exoplanets
Haiyang S. Wang, Sascha P. Quanz, David Yong +4
A major goal in the discovery and characterisation of exoplanets is to identify terrestrial-type worlds that are similar to (or otherwise distinct from) our Earth. Recent results h…
Water content trends in K2-138 and other low-mass multiplanetary systems
Lorena Acuña, Theo Lopez, Thierry Morel +5
Super-Earths and sub-Neptunes have been found simultaneously in multiplanetary systems, suggesting that they are appropriate to study composition and formation within the same envi…
HD207897 b: A dense sub-Neptune transiting a nearby and bright K-type star
N. Heidari, I. Boisse, J. Orell-Mique +90
We present the discovery and characterization of a transiting sub-Neptune orbiting with a 16.20 day period around a nearby (28 pc) and bright(V=8.37) K0V star HD207897 (TOI-1611).…
TOI-220 : a warm sub-Neptune discovered by TESS
S. Hoyer, D. Gandolfi, D. J. Armstrong +77
In this paper we report the discovery of TOI-220 , a new sub-Neptune detected by the Transiting Exoplanet Survey Satellite (TESS) and confirmed by radial velocity follow-up obse…
Characterisation of the hydrospheres of TRAPPIST-1 planets
Lorena Acuña, Magali Deleuil, Olivier Mousis +3
Context. Planetary mass and radius data are showing a wide variety in densities of low-mass exoplanets. This includes sub-Neptunes, whose low densities can be explained with the pr…
Planetary system LHS 1140 revisited with ESPRESSO and TESS
J. Lillo-Box, P. Figueira, A. Leleu +17
LHS 1140 is an M dwarf known to host two known transiting planets at orbital periods of 3.77 and 24.7 days. The external planet (LHS 1140 b) is a rocky super-Earth that is located…
Masses for the seven planets in K2-32 and K2-233. Four diverse planets in resonant chain and the first young rocky worlds
J. Lillo-Box, T. A. Lopez, A. Santerne +18
High-precision planetary densities are key to derive robust atmospheric properties for extrasolar planets. Measuring precise masses is the most challenging part, especially in mult…
Detailed chemical compositions of planet hosting stars: I. Exploration of possible planet signatures
F. Liu, D. Yong, M. Asplund +5
We present a line-by-line differential analysis of a sample of 16 planet hosting stars and 68 comparison stars using high resolution, high signal-to-noise ratio spectra gathered us…