Paola Caselli, Max Planck Institute for Extraterrestrial Physics, Germany
Tuesday, 18 January 2022, 16:00 CEST (14:00 UTC)
In this instalment of the EAI seminar series, the speaker will present a journey from the earliest phases of star formation to protoplanetary disks, with links to our Solar System, highlighting the crucial role of astrochemistry as powerful diagnostic tool of the various steps, as well as to unveil our astrochemical origins.
The first seminar will provide an overview of recent studies on low-temperature reactions, which are expected to lead to the formation of complex organic and biologically significant molecules in the interstellar medium. It will focus on the following questions. How large biomolecules can be formed already in space? Can the processes occurring in space affect the origin of life on Earth?
During the academic year 2021 – 2022, the European Astrobiology Institute (EAI) is organizing the EAI Academy, a series of 16 didactic talks and discussions by experts in the field.
The seminars are offered for free and will be streamed online via zoomevery two weeks on Wednesday from 3:00 to 4:00 PM CET.
The EAI Academy will provide a framework to meet online with the European astrobiology community and to acquire interdisciplinary knowledge through a series of seminars given by experts in these fields. Each session will include a 30-40 minute didactic talk given by an expert. The talk will be followed by about 20 minutes of questions and answers.
The sessions will be hosted by the Center for Astrobiology (CAB), who will issue a certificate of participation to those who attend at least 10 seminars.
Exoplanet observations have revealed a wealth of data that has to be explained via planet formation simulations. Past simulations focused mainly on the mass-orbital distance distribution of exoplanets. However, recent detailed observations have allowed to constrain planetary masses and radii to such detail, that the bulk composition can be derived, giving new constraints to planet formation models. Of particular interest is the water content of close-in super-Earths and sub-Neptunes, because the water content is an important tracer of the formation history of planets as well as of great importance for the search of life on other planets. In this talk, I will outline the main ingredients of planet formation simulations, focusing on the core accretion scenario, with a particular focus on the composition of planets. In particular I will highlight the importance of water, not only for the composition of planets, but also for the formation pathway (growth and migration) of the planets themselves.
Astrobiology has two principal goals: 1) to learn how life began and evolved on Earth, and 2) to establish whether life exists elsewhere in the universe. Understanding the cosmic evolution of molecules that carry the elements C, H, O, P, S and N is central to this quest. Today we know that there is a rich and complex chemistry pervading the Interstellar medium and that this is retained amidst star and planet formation being observed in cometary bodies. However, the mechanisms by which such molecules are synthesized and the complexity that can be achieved remains subject of considerable uncertainty and provides a challenge to both the laboratory and modelling communities. In this talk I will review what we know, what we need to know and why we have not made the progress we expected in the last decade. I will then discuss some ideas of how we can overcome current challenges and achieve these two goals.
• Any student preparing his PhD thesis in Astronomy, Geology, Chemistry, Biology or History/Philosophy of sciences in France or any other country. • Any students or young scientist wishing to acquire an interdisciplinary training in astrobiology to complete their initial training and to be able to address issues about the origins of life on Earth, its evolution and its distribution in the Universe.
The program of RED’21/Astrobiology Introductory Course is complementary to that of RED’19, however it is not necessary to have followed it to participate in this new school.