Astronomy and Space Physics

Sven Buder (Australian National University): Galactic Archaeology with the GALAH Survey - What we have learned from GALAH DR3

Name: Sven Buder (Australian National University): Galactic Archaeology with the GALAH Survey - What we have learned from GALAH DR3
Start: 2022-06-23T14:00:00+02:00
End: 2022-06-23T15:00:00+02:00
Location: Ångströmlaboratoriet

Thursday 23 Jun 2022, 14:00 → 15:00 Europe/Stockholm

106150 (Ångströmlaboratoriet)

106150

Ångströmlaboratoriet

Description

Title: Galactic Archaeology with the GALAH Survey - What we have learned from GALAH DR3
Speaker: Sven Buder
Affiliation: Australian National University
Time: Thursday 23 June 2022, 1400 to 1500
Location: 106150Å

Abstract:

In 2021, the Australian-led Galactic Archaeology with HERMES (GALAH) Survey published its third data release, including abundances for up to 30 different elements of almost 0.6 million stars of the Milky Way. I will show some of the highlights that came out of the exploration of this data in combination with Gaia DR2 and eDR3 (including my own work on the compositions and dynamics of accreted stars as a potential key to deciphering the vivid youth of our Milky Way).

I will also tell you how we are aiming for even more reliable stellar parameters and abundances with the next data release by combining Spectroscopy Made Easy with neural network interpolations. This approach also opens exciting avenues for finally measuring CNO abundances in GALAH spectra and I am looking forward to discussing the advantages and dangers of this with you.