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May 2020
American Astronomical Society meeting
Madison, Wisconsin
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Goldschmidt ‘Virtual’ Conference 2020
San Francisco
Find out more »December 2020
AGU 2020
San Francisco
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March 2021
July 2021
September 2021
Seminar – Max Collinet
Speaker: MAX COLLINET, GERMAN AEROSPACE CENTER (DLR), BERLIN Title: Achondrites as witnesses of early melting processes in planetesimals and planetary embryos: experimental constraints and new meteorite discoveries Abstract: Achondrite meteorites are highly variable in composition: some are ultramafic (primitive achondrites) while others are basaltic (e.g. eucrites and angrites), to trachy-andesitic (e.g. GRA 06128 and Erg Chech 002). Those different groups correspond to the mantle and crust of planetary building blocks, respectively. They represent a unique opportunity to constrain the early melting processes…
Find out more »Seminar – Anders Johansen
Speaker: ANDERS JOHANSEN, UNIVERSITY OF COPENHAGEN Title: Formation of terrestrial planets by pebble accretion Abstract: The formation of the terrestrial planets in the Solar System is normally considered to last several 10s of million years and to have proceeded by giant impacts within a population of Mars-sized protoplanets. Observations of protoplanetary discs around young stars reveal that such discs host several hundred Earth masses of mm-cm sized pebbles. This inspired the pebble accretion theory for planet formation where the cores…
Find out more »October 2021
Seminar – Jennifer Bergner
Speaker: JENNIFER BERGNER, UNIVERSITY OF CHICAGO Title: Volatile chemistry in planet-forming disks Abstract:The viability of prebiotic chemistry on a nascent planet is dependent on the inventory of volatiles incorporated during the planet's formation, particularly carriers of the elements CHNOPS. This raises the questions: how did Earth obtain its prebiotic precursors, and how commonly do other planets inherit the ingredients for prebiotic chemistry? By studying the volatile chemistry at play in the evolutionary progenitors of planetary systems (protostars and protoplanetary disks),…
Find out more »Seminar – Laurette Piani
Speaker: LAURETTE PIANI, CRPG Nancy Title: Distribution of water in the inner Solar System and interest for the origin of water on Earth Abstract:Hydrogen is the most abundant element of the Solar System; nonetheless its distribution and evolution in the protoplanetary disk and planetary materials remain fairly unknown. As a striking example, the origin of Earth's hydrogen -and thus water- is one of the most puzzling issues. Chondrites are rocky fragments of asteroids that formed at different times and heliocentric…
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