Seminare und Vorlesungen

Ort: MPA

Star cluster formation, feedback and evolution across cosmic times

MPA Special Seminar on Galaxy Formation
In the era of multi wavelength surveys of unprecedented sensitivity and spatial resolution, we are now able to map star cluster formation from the very early phases (deeply embedded in their natal giant molecular clouds) as well as study their feedback on the interstellar medium not only in the local universe but across cosmic times. I will present some key results obtained from our initial JWST observations of the nearby galaxy NGC628. Combinations of NIR and MIR colors as well as MIR emission lines like Br_alpha and the 3.35 micron PAH band help us, for the first time, to fully map the star clusters from deeply embedded phases to late stages, when AGB stars dominate their colors. Comparisons between observed IR colors and stellar evolutionary tracks show how current stellar evolutionary models fail to reproduce all the cluster’s phases. I will show results that link cluster feedback to different ISM phases from 10s to 100 s of parsec scales. I will discuss how studying star clusters in the local universe remains a fundamental laboratory for understanding cluster formation and evolution in rapidly evolving galaxies across cosmic time. Gravitational telescopes and JWST capabilities have opened a new era for cluster studies in young galaxies. I will present our initial study of star clusters and stellar clumps in galaxies between redshift 1 and 6 that help us to reconstruct the conditions where proto-globular clusters formed. [mehr]
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