This is a talk given at lunch time, usually in the conference room at noon.
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
Over the past four decades, cosmologists have assumed that dark matter
is made of cold (non-relativistic) and non-interacting hypothetical
particles with typical mass m~100GeV leading to the cold dark matter
Dwarf galaxies (Mstar < 10^9 Msun) provide unique probes of
cosmic structure formation on the smallest scales, and represent the most
compelling testbeds for galactic feedback since they are more susceptible
In this talk I will present and review recent N-body simulations of the interaction of the Sgr dwarf with the Milky Way.
Every star in our Milky Way, and in all other galaxies, was born from the collapse of a cloud of hydrogen gas. The importance of cold gas in galaxy evolution is therefore well established, as is its role as a probe of recent environmental effects on galaxies.
Cosmic reionization is the last major phase transition of the intergalactic medium, and scrutinizing the detailed evolution of the IGM is a key frontier in observational cosmology.