par Audrey Countens (IRAP)
Résumé :
The inner regions of solar-type protostars host a rich chemistry. Complex organic molecules and water present in these environments can later become incorporated into comets and asteroids, and subsequently delivered to planets through impacts. Under suitable planetary conditions, these compounds may contribute to the emergence of life.
Large spectral surveys provide a powerful means to characterize the molecular composition of star-forming regions in an unbiased way. About a decade ago, the ALMA large spectral survey PILS targeted the solar-type protostar IRAS 16293-2422 and enabled a detailed inventory of its chemical content. However, determining whether this source is representative of solar-type protostars requires the study of a broader sample of objects. The ALMA large program COMPASS was designed to address this question.
In parallel, chemical modeling plays a crucial role in interpreting observations and understanding the origin of the observed molecular diversity.
In this seminar, I will present some of the first results from the COMPASS large program, together with recent advances in chemical modeling obtained in the framework of the ERC project Chemtrip.
Lieu : IAS, bât. 121, salle 1-2-3