activity
20192026
most citedSO2, silicate clouds, but no CH4 detected in a warm Neptune

128 citations · 327 across the 26 of their papers we have counts for

collaborators

27 papers

astro-ph.GA2026

Cosmic Noon Galaxies in the Hubble Ultra Deep Field with MIRI Wide-Field Slitless Spectroscopy

S. Kendrew, G. Östlin, L. Colina +29

We present results from a survey of the Hubble Ultra-Deep Field using the Wide-Field Slitless Spectroscopic (WFSS) capability of the Mid-Infrared Instrument (MIRI) on JWST, demonst…

astro-ph.EP2026

JWST-SUPER I: New insights into irradiated warm Neptunes atmospheres from MIRI observations of HD 106315 c

A. Dyrek, R. Waters, S. -M. Tsai +17

Sulphur-bearing molecules have recently emerged as powerful tracers of atmospheric photochemistry in exoplanets observed with JWST. In several warm giant planets, SO has been d…

astro-ph.GA2026

Spatially resolved metallicity and ionization in the merging system Gz9p3 at z=9.3

Arjan Bik, Javier Álvarez-Márquez, Alejandro Crespo Gómez +26

Studying the interstellar medium (ISM) in merging high-redshift galaxies is crucial for understanding early galaxy assembly, star formation, and black hole growth, predicted by hie…

astro-ph.GA2026

MIDIS: Strong H+[OIII] Line Emitters at

Thomas R. Greve, Steven Gillman, Pierluigi Rinaldi +24

We present a search for strong H+[O III] emitters at in the HUDF using ultra-deep JWST/MIRI F560W imaging from the MIDIS survey. Three galaxies are identified via p…

astro-ph.EP2026

Information content of JWST transmission spectroscopy of the exoplanet HAT-P-12b from the optical to the mid-infrared

L. Heinke, M. Min, J. Bouwman +18

The James Webb Space Telescope (JWST) provides low- to medium-resolution spectra with unprecedented precision and broad near- to mid-infrared wavelength coverage, enabling detailed…

astro-ph.GA2026

MIDIS: The identification of deep MIRI-red sources as candidates for extreme Balmer-break and line emitting galaxies at high-z

I. Jermann, G. Brammer, S. Gillman +27

We investigate the detection and nature of 5.6~μm MIRI-red sources in the MIRI Deep Imaging Survey (MIDIS), covering 2.4~arcmin in the Hubble Ultra Deep Field. MIDIS is the dee…

astro-ph.GA2025

A close look at the black hole masses and hot dusty toruses of the first quasars with MIRI-MRS

Sarah E. I. Bosman, Javier Álvarez-Márquez, Frederick B. Davies +29

The presence of supermassive black holes (SMBHs, ) at remains a puzzle. While their existence appears to require exotic formation or growth proce…

astro-ph.GA2025★ 4 cited

Spatially resolved H emission in B14-65666: compact starbursts, ionizing efficiency and gas kinematics in an advanced merger at the Epoch of Reionization

C. Prieto-Jiménez, J. Álvarez-Márquez, L. Colina +28

We present MIRI/JWST medium resolution spectroscopy (MRS) and imaging (MIRIM) of B14-65666, a Lyman-break and interacting galaxy at redshift =7.15. We detect the H line emiss…

astro-ph.EP2025★ 20 cited

Evidence for SiO cloud nucleation in the rogue planet PSO J318

P. Mollière, H. Kühnle, E. C. Matthews +25

Silicate clouds are known to significantly impact the spectra of late L-type brown dwarfs, with observable absorption features at ~ 10 micron. JWST has reopened our window to the m…

astro-ph.EP2025

Panchromatic characterization of the Y0 brown dwarf WISEP J173835.52+273258.9 using JWST/MIRI

Malavika Vasist, Paul Mollire, Helena Kühnle +9

Cold brown dwarf atmospheres are good training grounds for analyzing temperate giant planets. WISEP J173835.52+273258.9 (WISE 1738) is an isolated Y0 brown dwarf with a temperature…

astro-ph.EP2025★ 6 cited

JWST/MIRI observations of the young TWA 27 system: hydrocarbon disk chemistry, silicate clouds, evidence for a CPD

P. Patapis, M. Morales-Calderón, A. M. Arabhavi +39

The Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST) enables the characterisation of young self-luminous gas giants at previously inaccessible wavelengths, r…

astro-ph.EP2025★ 3 cited

Detection of CO, CO, and HO in the atmosphere of the warm sub-Saturn HAT-P-12b

N. Crouzet, B. Edwards, T. Konings +29

The chemical composition of warm gas giant exoplanet atmospheres (with Teq < 1000 K) is not well known due to the lack of observational constraints. HAT-P-12 b is a warm, sub-Satur…

astro-ph.EP2025

MIRI-JWST mid-infrared direct imaging of the debris disk of HD106906

Daniel Rouan, Anthony Boccaletti, Clément Perrot +20

We report MIRI-JWST coronagraphic observations at 11.3 and 15.5 mic of the debris disk around the young star HD 106906. The observations were made to characterize the structure, te…

astro-ph.EP2025

HCN and C2H2 in the atmosphere of a T8.5+T9 brown dwarf binary

Elisabeth C. Matthews, Paul Mollière, Helena Kühnle +22

T-type brown dwarfs present an opportunity to explore atmospheres teeming with molecules such as H2O, CH4 and NH3, which exhibit a wealth of absorption features in the mid-infrared…

astro-ph.EP2025

First unambiguous detection of ammonia in the atmosphere of a planetary mass companion with JWST/MIRI coronagraphs

Mathilde Mâlin, Anthony Boccaletti, Clément Perrot +28

The newly accessible mid-infrared (MIR) window offered by the James Webb Space Telescope (JWST) for exoplanet imaging is expected to provide valuable information to characterize th…

astro-ph.EP2024★ 53 cited

Combined analysis of the 12.8 and 15 JWST/MIRI eclipse observations of TRAPPIST-1 b

Elsa Ducrot, Pierre-Olivier Lagage, Michiel Min +36

The first JWST/MIRI photometric observations of TRAPPIST-1 b allowed for the detection of the thermal emission of the planet at 15 , suggesting that the planet could be a bare…

astro-ph.EP2024

Unveiling the HD 95086 system at mid-infrared wavelengths with JWST/MIRI

Mathilde Mâlin, Anthony Boccaletti, Clément Perrot +26

Mid-infrared imaging of exoplanets and disks is now possible with the coronagraphs of the MIRI on the JWST. This wavelength range unveils new features of young directly imaged syst…

astro-ph.GA2024★ 10 cited

MIDIS. Near-infrared rest-frame morphology of massive galaxies at in the Hubble eXtreme Deep Field

L. Costantin, S. Gillman, L. A. Boogaard +29

Thanks to decades of observations using the Hubble Space Telescope (HST), the structure of galaxies at redshift has been widely studied in the rest-frame ultraviolet regime,…

astro-ph.GA2024★ 1 cited

MIDIS: MIRI uncovers Virgil, the first Little Red Dot with clear detection of its host galaxy at z ~ 6.6

Edoardo Iani, Pierluigi Rinaldi, Karina I. Caputi +24

We present Virgil, a MIRI extremely red object (MERO) detected with the F1000W filter as part of the MIRI Deep Imaging Survey (MIDIS) observations of the Hubble Ultra Deep Field (H…

astro-ph.SR2024★ 4 cited

X-ray and UV radiation in the planet-forming T-Tauri system PDS 70. Signs of accretion and coronal activity

Simon R. G. Joyce, John P. Pye, Jonathan D. Nichols +3

Planet formation takes place in protoplanetary discs around young T-Tauri stars. PDS 70 is one of the first confirmed examples of a system where the planets are currently forming i…

astro-ph.SR2024

ExoplANETS-A: A VO database for host stars and planetary systems: The effect of XUV on planet atmospheres

M. Morales-Calderón, S. R. G. Joyce, J. P. Pye +12

ExoplANETS-A is an EU Horizon-2020 project with the primary objective of establishing new knowledge on exoplanet atmospheres. Intimately related to this topic is the study of the h…

astro-ph.GA2024★ 10 cited

JWST/MIRI unveils the stellar component of the GN20 dusty galaxy overdensity at =4.05

A. Crespo Gómez, L. Colina, J. Álvarez-Márquez +24

Despite the importance of the dusty star-forming galaxies (DSFGs) at >2 for understanding the galaxy evolution in the early Universe, their stellar distributions traced by the n…

astro-ph.GA2024

A NIRCam-dark galaxy detected with the MIRI/F1000W filter in the MIDIS/JADES Hubble Ultra Deep Field

Pablo G. Pérez-González, Pierluigi Rinaldi, Karina I. Caputi +32

We report the discovery of Cerberus, an extremely red object detected with the MIRI Deep Imaging Survey (MIDIS) observations in the F1000W filter of the Hubble Ultra Deep Field. Th…

astro-ph.EP2023★ 43 cited

15NH3 in the atmosphere of a cool brown dwarf

David Barrado, Paul Mollière, Polychronis Patapis +40

Brown dwarfs serve as ideal laboratories for studying the atmospheres of giant exoplanets on wide orbits as the governing physical and chemical processes in them are nearly identic…