WST - the Wide-field Spectroscopic Telescope: surveying the Universe in the 2040’s and beyond

Session

Galaxy assembly and evolution

11 Mar 2025, 16:20

Auditorium Nazionale "Ernesto Capocci" (INAF - Osservatorio Astronomico di Capodimonte)

146. Galaxy assembly and the cosmic web

Olga Cucciati (Istituto Nazionale di Astrofisica (INAF))

11/03/2025, 16:20

The cosmic web, in its many facets, is known to shape galaxy
evolution. It is a fundamental task to understand how and when the
various components of the cosmic web, still in formation, began to
affect galaxies' life. WST capabilities will be crucial in shading
light in this context. I will briefly review some of the open
questions related to the many component of the cosmic web, and...

80. Probing the distribution and nature of DM of tens of millions of galaxies: more and better than before

Crescenzo Tortora (Istituto Nazionale di Astrofisica (INAF))

11/03/2025, 16:40

Ongoing and upcoming wide-field imaging campaigns, such as the Euclid Wide and Deep Surveys and Rubin Observatory’s LSST, will enable measurements of the photometric and structural properties of tens of millions of galaxies, spanning the local Universe to redshifts of 2–3 and beyond, from dwarfs to the most massive galaxies. In particular, Euclid will uncover hundreds of thousands of dwarf...

85. Environment effects on galaxy evolution with WST: insights from the COSMOS Wall

Fabio Rosario Ditrani (Istituto Nazionale di Astrofisica (INAF))

11/03/2025, 16:55

We present a potential science case for the WST facility, focusing on the detailed characterisation of galaxy stellar populations as a function of the environment. This builds on the analysis we performed on a restricted sample of massive quiescent galaxies in the COSMOS Wall structure at z = 0.73. This structure encompasses a diverse range of environments, from rich and dense clusters to...

74. Unveiling the cosmic web through Lyα emission: from MUSE to WST

Davide Tornotti (Università degli Studi Milano-Bicocca)

11/03/2025, 17:00

The existence of filaments connecting galaxies, within which galaxies form, has been a long-standing prediction of structure formation theories in a Universe dominated by cold dark matter. However, direct imaging of these filaments has remained elusive until the advent of large-format integral field spectrographs such as the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large...