62 citations · 232 across the 20 of their papers we have counts for
20 papers
JWST COMPASS Program: The 3--5m transmission spectrum of LTT 1445 A b
Natasha E. Batalha, Nicole Wallack, Tyler Gordon +16
The search for an atmosphere on the closest rocky M dwarf planet, LTT 1445 A b, has been the subject of intense investigation from both the ground and space. Here, we present the f…
JWST COMPASS: A NIRSpec G395H Transmission Spectrum of Radius Valley-Dweller TOI-260 b
Annabella Meech, Peter Gao, Nicole L. Wallack +16
We present a JWST/NIRSpec G395H transmission spectrum of TOI-260 b, a K, planet. The transmission spectrum is derived by com…
JWST COMPASS: NIRSpec/G395H Transmission Observations of the Sub-Neptune HD 15337 c
Nicole L. Wallack, Peter Gao, Michael Greklek-McKeon +17
We present the 3-5 m transmission spectrum of HD 15337 c (TOI-402.02), a sub-Neptune (2.526 R, 6.792 M, T656 K) around a K1V star observed…
The Radius Cliff is a Waterfall: Explaining Sub-Neptune Exoplanets with Steam Worlds
Aritra Chakrabarty, Gijs D. Mulders, Artyom Aguichine +1
The demographics of Kepler planets provide a key testbed for models of planet formation and evolution, particularly for explaining the radius valley separating super-Earths and sub…
JWST COMPASS: Insights into the Systematic Noise Properties of NIRSpec/G395H From a Uniform Reanalysis of Seven Transmission Spectra
Tyler A. Gordon, Natalie M. Batalha, Natasha E. Batalha +9
JWST has already observed near-infrared transmission spectra of over a dozen super-Earths and sub-Neptunes. While some observations have allowed astronomers to characterize sub-Nep…
JWST COMPASS: A NIRSpec G395H Transmission Spectrum of the Super-Earth GJ 357 b
Jea Adams Redai, Nicholas Wogan, Nicole L. Wallack +14
We present JWST NIRSpec/G395H transmission spectroscopy observations of GJ 357 b, a warm ( K) super-Earth (, $1.84\ \mathrm{…
JWST COMPASS: NIRSpec/G395H Transmission Observations of TOI-776 c, a 2 Rearth M Dwarf Planet
Johanna Teske, Natasha E. Batalha, Nicole L. Wallack +16
The atmospheres of planets between the size of Earth and Neptune at short orbital periods have been under intense scrutiny. Of the ~dozen planets in this regime with atmospheres st…
JWST COMPASS: NIRSpec/G395H Transmission Observations of the Super-Earth TOI-776b
Lili Alderson, Sarah E. Moran, Nicole L. Wallack +15
We present two transit observations of the 520K, 1.85R, 4.0M super-Earth TOI-776b with JWST NIRSpec/G395H, resulting in a 2.8-5.2m transmission spectrum.…
Evolution of steam worlds: energetic aspects
Artyom Aguichine, Natalie Batalha, Jonathan J. Fortney +3
Sub-Neptunes occupy an intriguing region of planetary mass-radius space, where theoretical models of interior structure predict that they could be water-rich, where water is in ste…
JWST COMPASS: The 3-5 Micron Transmission Spectrum of the Super-Earth L 98-59 c
Nicholas Scarsdale, Nicholas Wogan, Hannah R. Wakeford +14
We present a JWST NIRSpec transmission spectrum of the super-Earth exoplanet L 98-59 c. This small (RR, MR), warm (T$_\textrm{eq…
Recipes for forming a carbon-rich giant planet
Olivier Mousis, Thibault Cavalié, Jonathan I. Lunine +9
The exploration of carbon-to-oxygen ratios has yielded intriguing insights into the composition of close-in giant exoplanets, giving rise to a distinct classification: carbon-rich…
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…
Evolution of the reservoirs of volatiles in the protosolar nebula
Antoine Schneeberger, Olivier Mousis, Artyom Aguichine +1
The supersolar abundances of volatiles observed in giant planets suggest that a compositional gradient was present at the time of their formation in the protosolar nebula. To expla…
On the stability of low-mass planets with supercritical hydrospheres
Hugo Vivien, Artyom Aguichine, Olivier Mousis +2
Short-period and low-mass water-rich planets are subject to strong irradiation from their host star, resulting in hydrospheres in supercritical state. In this context, we explore t…
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…
Cold traps of hypervolatiles in the protosolar nebula at the origin of comet C/2016 R2 (PanSTARRS)'s peculiar composition
Olivier Mousis, Artyom Aguichine, Alexis Bouquet +4
Recent observations of the long period comet C/2016 R2 (PanSTARRS) indicate an unusually high N2/CO abundance ratio, typically larger than 0.05, and at least 2-3 times higher than…
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…
Rocklines as Cradles for Refractory Solids in the Protosolar Nebula
Artyom Aguichine, Olivier Mousis, Bertrand Devouard +1
In our solar system, terrestrial planets and meteoritical matter exhibit various bulk compositions. To understand this variety of compositions, formation mechanisms of meteorites a…
Key Atmospheric Signatures for Identifying the Source Reservoirs of Volatiles in Uranus and Neptune
O. Mousis, A. Aguichine, D. H. Atkinson +5
We investigate the enrichment patterns of several delivery scenarios of the volatiles to the atmospheres of ice giants, having in mind that the only well constrained determination…
Jackknife resampling technique on mocks: an alternative method for covariance matrix estimation
S. Escoffier, M. -C. Cousinou, A. Tilquin +6
We present a fast and robust alternative method to compute covariance matrix in case of cosmology studies. Our method is based on the jackknife resampling applied on simulation moc…