CFHT UM2025 - Presentation Details
Abstract Details
Title: Caught in the cosmic web: framing the big picture of massive galaxies’ slow quenching since cosmic noon
Presenter: Thibaud Moutard
Abstract:
Well documented over ≥12 billion years (e.g. Davidson et al 2017), the continuous increase of the fraction of quiescent galaxies (where star formation has stopped) is the statistic expression of the quenching —i.e. the permanent shutdown— of star formation in galaxies. Quenching mechanisms may however vary depending on galaxies properties and environment. In particular, the fact that star formation has been observed to stop in galaxies reaching stellar masses of log(M*/Msun)~10.5-11, supporting the idea of mass quenching (e.g. Ilbert et al. 2010; Peng et al. 2010). I will present unprecedented observational analysis of the interplay between the cosmic web (CW) and the slow quenching of (interacting) massive M* galaxies. Taking advantage of the VIMOS Public Extragalactic Redshift Survey (VIPERS) and its UV-to-near-IR coverage, notably conducted with WIRCam and MegaCam at CFHT as part of the VIPERS Multi-Lamba Survey, we analyzed the connection between the properties of massive galaxies and their location within the CW. I will discuss how our observations reveal a picture where the slow quenching of M* galaxies is connected to cosmic filaments since cosmic noon.