Giovedì 27 gennaio alle ore 15:00, il Prof. Francesco Ferraro dell’Università di Bologna, terrà il web-seminar dal titolo: Fossil fragments tracing the hierarchical assembly of the Galactic bulge.
We recently discovered that two objects commonly catalogued as bulge globular clusters (Terzan 5 and Liller 1) are actually complex stellar systems hosting stars with very different ages and iron content, and showing a striking chemical similarity to the field population. They probably are remnants of more massive structures that, in place of dissolving and contributing to the hierarchical assembling of the bulge, evolved in isolation and experienced a second burst of star formation from gas enriched by supernova ejecta. In this talk I will summarize the main findings and discuss the possible link between these systems and the massive clumps observed in star forming disks at high redshift. Indeed, we likely discovered the crucial missing piece in the bulge formation puzzle, providing evidence for the connection between what we observe in the distant and in the local Universe.
E’ possible seguire lo streaming al seguente link: https://www.youtube.com/watch?v=PZL4X3R0sXs&ab_channel=INAFOA-ABRUZZO