How the chemical complexity evolves during the process leading to the formation of a Sun and its planetary system?
Is the chemical richness of a Solar-like planetary system, at least partially, inherited from the earliest stages or is there a complete chemical reset?
A powerful way to answering these questions is by comparing the chemical content in young protostars and primitive bodies of the Solar System, using astrochemistry as a tool. Yet, to do so, we need to fully understand the processes that govern the chemical evolution of a molecular cloud into a young planetary system.

The goal of the conference is to gather together the actors of this intrinsically interdisciplinary endeavor: instrumentalists, astronomers, chemists and modelers. The recent progresses in the four areas make the time ripe for these communities to join and ride this scientific wave.

The conference aims to review:

  • The new results from the powerful observing facilities, such as the IRAM-NOEMA, ALMA and VLA interferometers, and the chemical composition during the youngest phases of Solar-like planetary systems, from prestellar cores to protoplanetary disks, with particular emphasis on the interstellar complex organic molecules;
  • The recent progresses due to the enhancement of high-performance computing facilities combined with efficient quantum chemistry algorithms, which allow for the in-silico simulation of many chemical processes occurring both in gas-phase and at grain surfaces;
  • The latest laboratory experiments which have provided new insights on the possible processes occurring in the interstellar conditions;
  • The new generation astrochemical models as well as the innovative tools to interpret the astronomical observations that have seen the light in the last few years;
  • The most recent results on the chemical composition of the small bodies of the Solar System.

This will naturally pave the way for discussing the future developments in front of us.

The meeting will consist of invited reviews, invited and contributed talks, and posters, in 4 sessions:

I. Interstellar ices,

II. Molecular complexity,

III. Molecular fractionation,

IV. Cometary ices.

The 4 sessions will cover the astronomical observations and modeling, as well as laboratory experiments and theoretical computations.

Confirmed invited speakers: Alexander Tielens (NL), Piero Ugliengo (IT), Eleonora Bianchi (DE), Fabrice Duvernay (FR), Eva Wirström (SE), Steve Charnley (USA), Oba Yashiro (JP), Stephanie Cazaux (NL).


The most updated program: Program for the conference

The book of abstracts is now available

Picture 1 and picture 2.


Talks and Posters

  • The posters should have the usual format A0 (or smaller if you want). We have multiple railings ( each are 170cm*121cm) to hang the posters with clips. The posters will be shown the whole week.
  • The invited talks are 30mn long+10mn questions and the contributed talks are 15mn long+5mn questions.
  • It is always preferable to send the organizers the pdf of your talk in advance so that we use only 1 laptop and do not lose time to change laptop. We advise you to do that and send your pdf presentation in advance to the organisers (aco-conference2023 at The laptop has keynote and powerpoint installed, but a good old fashioned pdf is, as you know, alway better.

Scientific Committee

  • Charlotte Vastel (chair)
  • François Dulieu (co-chair)
  • Nadia Balucani
  • Claudio Codella
  • Cecilia Ceccarelli
  • Albert Rimola 
  • Patrice Theulé
  • Serena Viti

Organisation Committee

  • Charlotte Vastel (chair)
  • Marie Gogibu
  • François Dulieu


This event is co-organised by ACO, QUANTUMGRAIN, SIRC and DOC. It has received funding within the European Union’s Horizon 2020 research and innovation programme from the European Research Council (ERC) for the projects ``The Dawn of Organic Chemistry” (DOC), grant agreement No 741002 and ``Quantum Chemistry on Interstellar Grains” (QUANTUMGRAIN), grant agreement No 865657, and from the Marie Sklodowska-Curie for the project ``Astro-Chemical Origins” (ACO), grant agreement No 811312, and by the Agence Nationale de la recherche project "Solid Interstellard Radical Chemistry" (SIRC) Grant ANR-SPV202448 2020-2024.


Deadline for registration:

April 25th, 2023

Deadline for talks and posters:

March 1st, 2023

The SOC meets on the week of March 6th, 2023.

Acceptance is expected on March 10th, at the latest.



logo_ups.jpg logo_cnrs.jpg



Online user: 2 Privacy