The discovery of the ubiquitous nature of the multiple populations (MPs) in globular clusters (GCs) in our Galaxy and nearby galaxies is a great achievement in the fields of stellar and galactic astrophysics. One of the remarkable aspects of the GC MPs is that the second generation (SG) of stars, showing the chemical compositions that experienced proton capture processes at high temperature and being the major component of the most of normal GCs with MPs, formed in more spatially concentrated inner regions of GCs out of interstellar media polluted by the first generation (FG) of stars, with the chemical compositions similar to abundance patterns observed in Galactic field stars with the similar metallicity. Over the past decades, we developed a new photometric system to study such lighter elemental abundance anomalies in GC MPs. With our system, we will be able to simultaneously measure accurate [Fe/H], [C/Fe] and [N/Fe] (hopefully [O/Fe] in near future), which are the barometers of GC MPs, for the complete sample in crowded regions. In our talk, we will discuss the current status and the future perspective of our long-term survey program.
12/06/2024
The speaker is: Jae-Woo Lee (Sejong University)
Wednesday, June 12th at 11:30
The seminar can be attended in person in Sala Jappelli or remotely through the zoom link: Join Zoom Meeting
https://unipd.zoom.us/j/85273198731?pwd=V1ZiNE9ZWUN4ZTdIUzJsTFo0Z3U2Zz09
Meeting ID: 852 7319 8731
Passcode: 208186