activity
20232026
most citedSO2, silicate clouds, but no CH4 detected in a warm Neptune

128 citations · 545 across the 54 of their papers we have counts for

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20 papers · 1 filter

astro-ph.EP2025

MINDS: The molecule-rich disc of the Herbig star HD 35929 revealed with JWST/MIRI

Till Kaeufer, Rens Waters, Danny Gasman +16

Our knowledge of the chemical composition of the gas in the inner disc of intermediate-mass young stars is limited, due to the lack of suitable instrumentation. The launch of JWST…

astro-ph.EP2025

Detectability of resolved hydrogen lines from the accretion shock at gas giants and their circumplanetary discs

Gabriel-Dominique Marleau, Thomas Henning, Roy van Boekel +3

Fewer gas giants have been caught in their accretion phase than mature ones are known. Extremely Large Telescope (ELT) instruments will have a higher sensitivity and a smaller inne…

astro-ph.EP2025

MINDS: The very low-mass star and brown dwarf sample II. Probing disk settling, dust properties, and dust-gas interplay with JWST/MIRI

Hyerin Jang, Aditya M. Arabhavi, Till Kaeufer +11

Disks around very low-mass stars (VLMS) provide environments for the formation of Earth-like planets. Mid-infrared observations have revealed that these disks exhibit weak silicate…

astro-ph.EP2025★ 7 cited

MINDS. Strong oxygen depletion in the inner regions of a very low-mass star disk?

Jayatee Kanwar, Inga Kamp, Peter Woitke +10

JWST is discovering a plethora of species in planet-forming disks around very low-mass stars such as C2H2, C6H6, C4H2, CH3 etc. The column densities of these species retrieved from…

astro-ph.SR2025★ 5 cited

MINDS. Cha Hα 1, a brown dwarf with a hydrocarbon-rich disk

María Morales-Calderón, Hyerin Jang, Aditya M. Arabhavi +23

Context. Recent JWST observations have shown that brown dwarfs (BD) are chemically rich, offering valuable insights into giant planet formation. Aims. As part of the MIRI mid-INfra…

astro-ph.EP2025★ 17 cited

A transition from HO to CH dominated spectra with decreasing stellar luminosity

Sierra L. Grant, Milou Temmink, Ewine F. van Dishoeck +19

The chemical composition of the inner regions of disks around young stars will determine the properties of planets forming there. Many disk physical processes drive the chemical ev…

astro-ph.EP2025★ 9 cited

Worlds Next Door: A Candidate Giant Planet Imaged in the Habitable Zone of Cen A. I. Observations, Orbital and Physical Properties, and Exozodi Upper Limits

Charles Beichman, Aniket Sanghi, Dimitri Mawet +27

We report on coronagraphic observations of the nearest solar-type star, Cen A, using the MIRI instrument on the James Webb Space Telescope. With three epochs of observation (Au…

astro-ph.EP2025★ 5 cited

MINDS. Young binary systems with JWST/MIRI: Variable water-rich primaries and extended emission

Nicolas T. Kurtovic, Sierra L. Grant, Milou Temmink +16

As part of the JWST GTO program MINDS, we analyze the mid-infrared emission of three Class II binary systems: VW Cha, WX Cha, and RW Aur, to investigate the impact of stellar multi…

astro-ph.EP2025

XUE 10. The CO2-rich terrestrial planet-forming region of an externally irradiated Herbig disk

Jenny Frediani, Arjan Bik, María Claudia Ramírez-Tannus +18

We investigate the James Webb Space Telescope (JWST) MIRI MRS gas molecular content of an externally irradiated Herbig disk, the F-type XUE 10 source, in the context of the eXtreme…

astro-ph.EP2025

MINDS: Detection of an inner gas disk caused by evaporating bodies around HD 172555

M. Samland, T. Henning, A. Caratti o Garatti +23

Mechanisms such as collisions of rocky bodies or cometary activity give rise to dusty debris disks. Debris disks trace the leftover building blocks of planets, and thus also planet…

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.SR2025★ 7 cited

XUE. JWST spectroscopy of externally irradiated disks around young intermediate-mass stars

María Claudia Ramírez-Tannus, Arjan Bik, Konstantin V. Getman +17

Most young stars and therefore planetary systems form in high-mass star forming regions and are exposed to ultraviolet radiation, affecting the protoplanetary disk. These regions a…

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★ 20 cited

MINDS: The very low-mass star and brown dwarf sample -- Hidden water in carbon-dominated protoplanetary disks

Aditya M. Arabhavi, Inga Kamp, Ewine F. van Dishoeck +21

Infrared observations of the inner disks around very low-mass stars (VLMS, 0.3) have revealed a carbon-rich gas composition in the terrestrial planet-forming region…

astro-ph.EP2025

MINDS. Anatomy of a water-rich, inclined, brown dwarf disk: lack of abundant hydrocarbons

Giulia Perotti, Nicolás T. Kurtovic, Thomas Henning +23

2MASS J04381486+2611399 (or J0438) is one of the few young brown dwarfs (BD) with a highly inclined () disk. Here we report results from JWST-MIRI MRS, HST-ACS a…

astro-ph.EP2025

XUE. Thermochemical Modeling Suggests a Compact and Gas-Depleted Structure for a Distant, Irradiated Protoplanetary Disk

Bayron Portilla-Revelo, Konstantin V. Getman, María Claudia Ramírez-Tannus +14

Unveiling the physical structure of protoplanetary disk is crucial for interpreting the diversity of the exoplanet population. Until recently, the census of the physical properties…

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.GA2025★ 5 cited

The Rich JWST Spectrum of the Western Nucleus of Arp 220: Shocked Hot Core Chemistry Dominates the Inner Disk

Victorine Buiten, Paul van der Werf, Serena Viti +20

We present full 3-28 JWST MIRI/MRS and NIRSpec/IFU spectra of the western nucleus of Arp 220, the nearest ultraluminous infrared galaxy. This nucleus has long been su…

astro-ph.GA2025

MIDIS: Quantifying the AGN component of X-ray-detected galaxies

Steven Gillman, John P. Pye, Almudena Alonso-Herrero +26

We combine the deepest X-ray survey from the Chandra Deep Field-South (CDF-S) `7-Ms' survey with the deepest mid-infrared (5.6) image from the JWST/MIRI Deep Imaging Survey (M…