24 citations · 61 across the 9 of their papers we have counts for
11 papers
JWST Reveals Refractory-Rich Water Ice in Interstellar Comet 3I/ATLAS: Evidence for a Continuum of Grain Properties across Protoplanetary Disks
Silvia Protopapa, Michael S. P. Kelley, Martin A. Cordiner +12
We present JWST/NIRSpec PRISM observations of the interstellar comet 3I/ATLAS obtained on 2025 August 6 (Epoch 1), 2025 December 22 (Epoch 2), and 2026 April 1 (Epoch 3), spanning…
JWST reveals anomalously enhanced methane outgassing from below Chiron's water ice and carbon dioxide bearing surface
Ian Wong, Silvia Protopapa, Aurélie Guilbert-Lepoutre +7
Centaurs are inward-scattered Kuiper belt objects, with some exhibiting comet-like activity. The physical mechanisms powering this activity remain poorly understood, with carbon mo…
A few ideas to promote inclusion
Thibaut Paumard, Aurélie Guilbert-Lepoutre, Maïca Clavel +5
Promoting diversity, equity, inclusion and accessibility (DEIA) is both a legal and professional responsibility in French research institutions. This paper presents practical strat…
JWST/NIRSpec Observations of Salacia-Actaea and Máni: Exploring Population-level Trends among Water-ice-rich Kuiper Belt Objects
Ian Wong, Bryan J. Holler, Silvia Protopapa +9
We present observations of the midsized Kuiper Belt objects (KBOs) SalaciaActaea and Máni, obtained with the Near-Infrared Spectrograph on JWST. The satellite Actaea was fully b…
A portrait throughout perihelion of the NH-rich interstellar comet 2I/Borisov
Sophie E. Deam, Michele T. Bannister, Cyrielle Opitom +12
The interstellar comet 2I/Borisov is the first interstellar object where compositional characterisation was possible throughout its entire perihelion passage. We report all 16 epoc…
On the early thermal processing of planetesimals during and after the giant planet instability
A. Gkotsinas, D. Nesvorny, A. Guilbert-Lepoutre +2
Born as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets' dynamical i…
Unveiling the ice and gas nature of active centaur (2060) Chiron using the James Webb Space Telescope
N. Pinilla-Alonso, J. Licandro, R. Brunetto +15
(2060) Chiron is a large centaur that has been reported active on multiple occasions including during aphelion passage. Studies of Chirons coma during active periods have resulted…
Pits on Jupiter Family Comets and the age of cometary surfaces
Aurélie Guilbert-Lepoutre, Selma Benseguane, Laurine Martinien +4
Large and deep depressions, also known as pits, are observed at the surface of all Jupiter Family Comets (JFCs) imaged by spacecraft missions. They offer the opportunity to glimpse…
On averaging eccentric orbits: Implications for the long-term thermal evolution of comets
Anastasios Gkotsinas, Aurélie Guilbert-Lepoutre, Sean N. Raymond
One of the common approximations in long-term evolution studies of small bodies is the use of circular orbits averaging the actual eccentric ones, facilitating the coupling of proc…
The gateway from Centaurs to Jupiter-family Comets: thermal and dynamical evolution
Aurélie Guilbert-Lepoutre, Anastasios Gkotsinas, Sean N. Raymond +1
It was recently proposed that there exists a "gateway" in the orbital parameter space through which Centaurs transition to Jupiter-family Comets (JFCs). Further studies have implie…
Thermal processing of Jupiter Family Comets during their chaotic orbital evolution
Anastasios Gkotsinas, Aurélie Guilbert-Lepoutre, Sean N. Raymond +1
Evidence for cometary activity beyond Jupiter and Saturn's orbits -- such as that observed for Centaurs and long period comets -- suggests that the thermal processing of comet nucl…