74 citations · 119 across the 9 of their papers we have counts for
9 papers
Activity and composition of periodic comets 67P/Churyumov-Gerasimenko and 103P/Hartley 2 at two different perihelion passages
E. Hemmen, M. Vander Donckt, E. Jehin +6
Through photometry and spectroscopy, we studied the evolution of the activity and chemical composition of comet 67P during its 2025 and 2021 perihelion passages and of comet 103P d…
Variations in Volatile-Driven Activity of Comet C/2017 K2 (PanSTARRS) Revealed by Long-Term Multi-Wavelength Observations
S. Hmiddouch, E. Jehin, M. Lippi +7
Context. A comprehensive study of comets over a wide heliocentric distance range helps us understand the physical processes driving their activity and reveals compositional differe…
Interferometric apodization by homothety -- II. Experimental validation
J Chafi, Y El Azhari, O Azagrouze +4
This work presents the results of experimental laboratory tests on the apodization of circular and rectangular apertures using the Interferometric Apodization by Homothety (IAH) te…
Interferometric apodization by homothety -- I. Optimization of the device parameters
Jamal Chafi, Youssef El Azhari, Ossama Azagrouze +4
This study is focused on the very high dynamic imaging field, specifically the direct observation of exoplanetary systems. The coronagraph is an essential technique for suppressing…
An extended low-density atmosphere around the Jupiter-sized planet WASP-193 b
Khalid Barkaoui, Francisco J. Pozuelos, Coel Hellier +32
Gas giants transiting bright nearby stars provide crucial insights into planetary system formation and evolution mechanisms. Most of these planets exhibit certain average character…
Surface pressure impact on nitrogen-dominated USP super-Earth atmospheres
Jamila Chouqar, Jacob Lustig-Yaeger, Zouhair Benkhaldoun +3
In this paper, we compare the chemistry and the emission spectra of nitrogen-dominated cool, warm, and hot ultra-short-period (USP) super-Earth atmospheres in and out of chemical e…
Activity and composition of the hyperactive comet 46P/Wirtanen during its close approach in 2018
Y. Moulane, E. Jehin, J. Manfroid +10
Hyperactive comets are a small group of comets whose activity are higher than expected. They seem to emit more water than they should based on the size of their nucleus and comet 4…
Properties of Sub-Neptune Atmospheres: TOI-270 System
J. Chouqar, Z. Benkhaldoun, A. Jabiri +3
We investigate the potential for the James Webb Space Telescope (JWST) to detect and characterize the atmospheres of the sub-Neptunian exoplanets in the TOI-270 system. Sub-Neptune…
A Global Fireball Observatory
H. A. R. Devillepoix, M. Cupák, P. A. Bland +46
The world's meteorite collections contain a very rich picture of what the early Solar System would have been made of, however the lack of spatial context with respect to their pare…