Galaxies, stars and cosmology

Georg HERZOG (Università di Milano "Bicocca"): "The present-day gas content of simulated field dwarf galaxies". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT It is known from theory and observations that galaxy evolution can be influenced by environmental effects. Processes like ram pressure stripping in groups, clusters or the cosmic web as well as tidal stripping can affect the final properties of galaxies. However, until now no estimate exists on the relative importance of different processes for the final properties of field galaxies. Based on a high-resolution cosmological simulation I will show that there are two distinct processes that affect the present-day gas content of field dwarf galaxies. 1) Past interactions with massive hosts, in which a […]

Happy New Year! Michelle COLLINS (University of Surrey): "The hunt for new ultra-faint dwarf galaxies". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT If the Lambda cold dark matter model is correct, we expect hundreds of faint, low mass galaxies to be lurking around the Local […]

Jorge VILLA-VÉLEZ (École Normale Supérieure, Paris): "Molecular hydrogen (H2) emission as a tracer of dissipation in the extragalactic ISM". You can find the schedule of upcoming café-clubs and the video of old ones at http://wiki.lam.fr/geco/CafeClub 

 Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT Shocks are ubiquitous in the interstellar medium (ISM) as a result of […]

Mohammad Taher SAFARZADEH (NASA Goddard Space Flight Center): "How to use LISA to constrain Hubble expansion rate at high redshifts". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT Our understanding of the formation channels of stellar mass compact objects have been […]

Massimo GUIDI (Università Roma Tre): "Constraining Large-Scale-Structure with new modelling approaches of the three-point correlation function". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT Three-point statistics play a key role in the investigation of the properties of the universe. This talk […]

Clément STAHL (Observatoire astronomique de Strasbourg): "Exploring the effects of primordial non-Gaussianity at galactic scales". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT In this talk, I will show you my investigation of the effect of significant small-scale primordial non-Gaussianity on structure formation and […]

Devon POWELL (Max Planck Institute for Astrophysics, Garching): "Fuzzy dark matter constraints using a single VLBI observation of a gravitationally lensed radio jet". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT Strong gravitational lensing by galaxies provides us with a powerful […]

Hiroya UMEDA (Institute for Cosmic Ray Research, University of Tokyo): "Cosmic reionization sources and history probed with large galaxy surveys and photoionization modeling". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT Cosmic reionization scenarios are explored by investigating cosmic reionization history […]

Silvia MARTOCCHIA (Astronomisches Rechen-Institut, Universität Heidelberg): "The origin of globular clusters and their anomalous stellar populations". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ABSTRACT Globular clusters (GCs),agglomerates of hundreds of thousands stars, are among the oldest (age > 10 Gyr) luminous sources  […]

Denis BURGARELLA (LAM): "Spectroscopic verification of very luminous galaxy candidates in the early universe". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT During the first 500 million years of cosmic history, the first stars and galaxies formed and seeded the cosmos […]

Franciele KRUCZKIEWICZ (LAM): "Water's journey to Earth: A Virtual Reality outreach project +++ with demo with VR headset". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT Astrochemistry, a relatively new field within astronomy, uses molecules in space as a tool to […]

Pierre BOLDRINI (Institut d'Astrophysique de Paris): "ΛCDM cosmological simulation of Monge-Ampère gravity via optimal transport theory". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Meriam, Mathilde ---------------- ABSTRACT Monge-Ampère gravitation is a modification of the classical Newtonian gravity where the linear Poisson equation is replaced by the […]