This is a talk given at lunch time, usually in the conference room at noon.
The Andromeda Galaxy (M31), our nearest large galactic neighbour, offers a unique opportunity to
test how mergers affect galaxy properties. M31's stellar halo caused by the tidal disruption of
Gravity-only simulations of structure formation within the standard paradigm for the Universe are remarkably successful at reproducing observations on scales larger than about 1 Mpc. However, discrepancies begin to appear on smaller scales, indicating the importance of non-gravitational physics.
The Maunakea Spectroscopic Explorer (MSE) will each year obtain millions of spectra in the optical to near-infrared (360 to 1800 nm), at low (R~3000) to high (R~40000) spectral resolution by observing more than 4300 spectra per pointing via a highly multiplexed fiber-fed system.
The stars in galaxies record the fossil record of galaxy formation. I present the Large Early Galaxy Astrophysics Census (LEGA-C) survey, an ESO VLT/VIMOS survey that obtains ~3000 Ks-band-selected spectra for studying the stellar continua of galaxies at z~1.
What can stellar metallicity tell about galactic outflow? I
will be talking about the stellar-phase mass - metallicity relation of
quiescent galaxies and its evolution with redshift. I will show how the