The Pristine survey: Galactic Archaeology with the very metal-poor (and very old) Milky Way
Nicolas Martin
Université de Strasbourg, FR / Max-Planck, GR
I will present the latest results from the Pristine collaboration that builds on a large photometric survey of the Northern sky with a narrow-band filter that focusses on the metallicity-sensitive Ca H&K lines and that yields accurate metallicities for tens of millions of stars. I will show that Pristine is very efficient at finding extremely metal-poor stars ([Fe/H]<-3.0), whose chemistry holds information about the very first stars; that we are starting to lift the veil on the distribution and, when combined with the exquisite Gaia astrometric information, the orbits of these oldest stars in the Milky Way and in dwarf galaxies; and that, with the advent of near-future, large spectroscopic surveys like WEAVE, we shall soon have an unprecedented view of the assembly of the Milky Way at the earliest times.
Nicolas did his PhD at the Strasbourg astronomical Observatory before moving to the Max Planck Institute for Astronomy, in Heidelberg, for a postdoc fellowship and coming back to Strasbourg for a tenured researcher position. He is an expert of Galactic Archeology and the co-leader of the Pristine survey.
Google Meet: https://meet.google.com/pcw-gmem-jyi
Link da transmissão: https://www.youtube.com/c/AstronomiaIAGUSP/live