Jun 5 – 6, 2025
ETH Zurich
UTC timezone

4MOST Cosmology Redshift Survey: BG and LRG Target Selection

Jun 6, 2025, 2:15 PM
15m
Siemens Auditorium (HIT E 51) (ETH Zurich)

Siemens Auditorium (HIT E 51)

ETH Zurich

Wolfgang-Pauli-Strasse 27 HIT Building CH-8093 Zürich
New Experiments New Experiments

Speaker

Aurélien Verdier (EPFL)

Description

The 4-metre Multi-Object Spectroscopic Telescope is currently being installed on the VISTA Telescope (Paranal) and will start observations of multiple science cases at the end of this year. One of the 18 experiments is the Cosmology Redshift Survey (CRS) which is composed of 4 samples: Bright Galaxies (BG, 0.15 < z < 0.4), Luminous Red Galaxies (LRG, 0.4 < z < 1.0), Quasars (QSO, 0.9 < z < 2.2) and Lyman-forest Quasars (QSO-Lyalpha, 2.2 < z < 3.5).
These samples will be used to perform spectroscopic clustering measurements but also provide spectroscopic redshifts for other photometric surveys as the LSST, or future southern radio telescopes as the Hydrogen Intensity and Real-time Analysis eXperiment (HIRAX) or the Square Kilometre Array (SKA).
In this talk, I will present an overview of 4MOST as well as a description of the BG and LRG samples

Author

Aurélien Verdier (EPFL)

Presentation materials