CFHT UM2025 - Presentation Details
Abstract Details
Title: The relation between star formation and its surrounding environment from Galactic to cosmological scales
Presenter: Alessandro Boselli
Abstract:
Star formation is a key process in galaxy evolution. Atomic hydrogen, the principal baryonic component of the Universe, collapses into giant molecular clouds where new stars are formed. This complex process is strongly dependent on the physical properties of the environment where it occurs. At the same time, the process of star formation has a huge impact on the physical properties of the surrounding medium (feedback). Megacam, coupled with its set of narrow-band imaging filters centered on the Halpha line, is offering us with a unique opportunity to study this process in a large variety of environments with an accuracy, a sensitivity, and an angular resolution rarely reached in previous works. As part of the upcoming CFHT Community Survey, we propose to undertake a narrow-band imaging survey of various representative environments, from Galactic HII regions, to nearby galaxies located in different density regions, from massive clusters such as Coma and A1367, to groups and filaments, or at cosmological distances ([OIII], [OII], and Lyalpha line emitters at redshift z=0.3, 0.8, 4.4, respectively) to study the relationship between the star formation process and its surrounding environment at different scales.