We invite the members of the COST Action CA21101 (“COSY”), as well as all interested parties, to join the working group 1 (WG1) and 5 (WG5) one-day symposium in the CSIC Central Campus, Madrid on the 30th of April 2026. Working group 1 (leader Piotr Zuchowski) covers fundamental studies of molecular interactions: new methods, benchmarks on confined systems. Working group 5 (leader Lauri Halonen) covers computational, theoretical, and experimental investigation of the formation of molecules and matter in the interstellar medium and in planetary and solar atmospheres. The aim is to continue the close collaboration between these working groups, i.e., theoretical and computational expertise in WG1 and experimental and theoretical spectroscopic knowledge in WG5. On the theory side, we are interested in molecular scattering, perturbation theory, variational and discrete variable methods, and electronic structure calculations. The applications concentrate particularly on astrochemistry, i.e., on spectroscopy and chemical reactions in the gas phase and on surfaces of particles in the interstellar medium and in the atmospheres of exoplanets, and near very hot environments. New experimental, theoretical, and computational methods are also key aspects of our scientific interest.
Organizing Committee
Lauri Halonen (University of Helsinki)
Piotr Zuchowski (University of Torun)
Alexandre Zanchet (Spanish National Research Council (CSIC), Madrid)
María Pilar de Lara-Castells – Action Chair COSY COST Action (Spanish National Research Council (CSIC), Madrid)
Program:
9:00 – 9:45 Sergey Yurchenko (London), Computing molecular line lists for exoplanetary atmospheric applications: Over the all wavelength
9:45 – 10:00 Amélie Godard Palluet (Madrid), Collisional studies to investigate the properties of astrophysical media
10:00 – 10:45 Jose Cernicharo (Madrid), The new golden age of astrochemistry
10:45 – 11:15 Coffee break
11:15 – 12:00 Henrik Kjaergaard (Copenhagen), The effect of temperature on OH-stretching bands of hydrogen bound complexes
12:00 – 12:30 Valentina Erastova (Edinburgh) Tracing Mars’ biosignatures through molecular modelling
12:30 – 12:45 Michal Zoltowsky (Torun), Collisional studies of heavy molecules observed in comets
12:45 – 13:00 Anzhela Veselinova Marinova (Rennes) Quantum study of HCOOH-He collisions: Implications for non-local thermal equilibrium modelling of formic acid in the interstellar medium
13:00 – 14:30 Lunch break
14:30 – 15:15 Alston Miquitta (London), A framework for exact self-consistent embedding: Obtaining the infinite-order induction energy from Symmetry-Adapted Relaxation Theory (SART)
15:15 – 15:45 Andre Gomez (Lille) Molecular properties for heavy element systems with coupled cluster and embedding theories
15:45 – 16:00 Dominik Cieslinski (Warsaw) Degenerate symmetry-adapted perturbation theory: Applications to open-shell systems and excimers
16:00 – 16:30 Coffee break
16:30 – 17:15 Piotr Zuchowski (Torun)
17:30 – 18:30 Closure ceremony
Venue
CSIC Central Campus, C. de Serrano, 121 (Conference Hall), 28006 Madrid, Spain. For more information on CSIC Central Campus see Venue – Fourth General Meeting COSY
The coffee-breaks will be served at ‘Claustro‘ of the building at Serrano 123.
Accommodation
See Accommodation – Fourth General Meeting COSY
Registration
Registration deadline has passed
