SEMINÁRIO DO DEPARTAMENTO DE ASTRONOMIA
The Galactic Bulge: combining Gaia-RVS and APOGEE
a talk by Cristina Chiappini (Leibniz Institute for Astrophysics Potsdam - AIP, Germany)
Abstract:
The Galactic bulge is a complex and vital component of the Milky Way, offering crucial insights into the early stages of galaxy formation and evolution. By combining high-resolution spectroscopic data from APOGEE with the precise astrometry and kinematics from Gaia-RVS, we gain a multi-dimensional view of the bulge’s stellar populations. This synergy allows us to disentangle its chemo-dynamical substructures, trace the origins of distinct stellar populations, and—crucially—show for the first time the clear presence of a pressure-supported component among field stars in the bulge. The complementarity with recent studies of bulge globular clusters (GCs) will also be highlighted, offering a broader perspective on the bulge’s assembly and enrichment history.
Looking ahead, I will also outline how upcoming facilities such as 4MIDABLE-LR—the largest sub-survey of 4MOST—and future missions like HAYDN and Gaia-NIR will dramatically enhance our ability to probe the innermost regions of the Milky Way.
Short-Bio:
Cristina Chiappini earned her Ph.D. from the University of São Paulo in 1998, with part of her research conducted at SISSA-Trieste. After a postdoctoral fellowship at Columbia University, she secured a tenured position at the Trieste Observatory (INAF). She later worked as Maître Assistant at the University of Geneva, and since 2011, she has been a senior scientist at the Leibniz Institute for Astrophysics Potsdam (AIP).
She served as the project scientist for the 4MOST survey during its design phase and currently co-leads the 4MIDABLE-LR Survey, a major spectroscopic follow-up to Gaia. Starting her career with chemical evolution models, she has since focused on combining large-scale spectroscopic surveys with asteroseismology to better constrain the Milky Way’s formation history.
She is part of the StarHorse team, which has played a key role in enabling precise stellar distances in the Gaia era. Cristina was also nominated to AcademiaNet, a database of prestigious women in science, and contributes to two ESA proposed missions focused on Galactic archaeology.
Google Meet: https://meet.google.com/pcw-gmem-jyi
Link da transmissão: https://www.youtube.com/c/AstronomiaIAGUSP/live