Format and Program
Cool Stars 23 Splinter Session, Thursday, June 18, 2026
Format of the meeting
At this splinter session we want to focus on interactive discussions focused on identifying important research topics and questions related to dust in the universe, and aligning research efforts at the intersection of hydrodynamics, chemistry and observations.
For this the session will focus on various discussion formats, based on focused presentations on relevant on-going research.
To be successful, we invite all participants to actively contribute to the session before, during, and after the meeting in Tokyo!
14:00 - 15:30 Block 1 : “Setting the Stage.”
14:00 - 14:05: Welcome and introduction
Invited overview talks (3 × 15 min):
14:05 - 14:20: State-of-the-art hydrodynamical models of dusty outflows (L. Siess);
14:20 - 14:35: Chemical/nucleation kinetics and gas–grain microphysics (S. Bromley);
14:35 - 14:50: Observational constraints from ALMA/JWST/VLTI (continuum + lines) (TBD).
14:50 - 15:30: Discussion topics: short presentations of research problems as seeds for discussion.
Topics that will be discussed:
From hydrodynamical dust models to JWST observations in crowded environments
ALMA + VLT imaging of cool evolved stars at high angular and spectral resolution
How to ensure using resolved data maximally
Hazes in exoplanet atmospheres and common challenges between exoplanets and evolved stars
Empirical constraints on the dust formation region around evolved stars
Dust in 3D and Darwin models
Dust around red supergiants
Topics will be introduced by:
Olivier Verhamme
Daniel Jadlovský
Flaminia Fortuni
Yui Kawashima
Keiichi Ohnaka
Susanne Höfner
Mark Siebert
Camille Landri
16:00 - 17:30 Block 2: “Confrontation & Co-design.”
16:00 - 16:05: Introduction to the session
16:05 - 16:35: Open discussion
16:35 - 17:00: Breakout groups: three parallel groups (hydro-chem coupling; forward-modeling and observables; data & lab needs) produce a one-slide “commitment list.”
17:00 - 17:20: Panel synthesis + open floor: moderators integrate outputs; community discussion to prioritize shared benchmarks and next steps.
17:20 - 17:30: Wrap-up