Galaxies, étoiles et cosmologie

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Cafe Club, Yun-Ting Cheng: « Cosmology and Astrophysics from Intensity Mapping ».

  Yun-Ting Cheng (Caltech): "Cosmology and Astrophysics from Intensity Mapping". You can find the schedule of upcoming café-clubs and the video of old ones here. Take care, Carlo, Mathilde, Meriam ---------------- ABSTRACT Intensity mapping has emerged as a promising tool to study the high redshift universe and the faint, diffuse extragalactic populations. Without resolving individual […]

Café-Club

Georg HERZOG (Università di Milano "Bicocca"): "The present-day gas content of simulated field dwarf galaxies". The cafe-club will take place at 11:00 am in the Library at LAM and on usual AMU virtual room: (Meeting ID : 968 7683 2544 -- Passcode : 173347, not needed if using the link above) You can find the […]

Café-Club, Georg HERZOG: « The present-day gas content of simulated field dwarf galaxies »

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 […]

Café-Club, Michelle COLLINS: « The hunt for new ultra-faint dwarf galaxies ».

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 […]

Café-Club, Jorge VILLA-VÉLEZ: « Molecular hydrogen (H2) emission as a tracer of dissipation in the extragalactic ISM ».

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 a […]

Café-Club, Mohammad Taher SAFARZADEH: « How to use LISA to constrain Hubble expansion rate at high redshifts ».

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 […]

Café-Club, Massimo GUIDI: « Constraining Large-Scale-Structure with new modelling approaches of the three-point correlation function ».

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 […]

Café-Club, Clément STAHL: « Exploring the effects of primordial non-Gaussianity at galactic scales »

  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 […]

Café-Club, Devon POWELL: « Fuzzy dark matter constraints using a single VLBI observation of a gravitationally lensed radio jet ».

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 […]

Café-Club, Hiroya UMEDA: « Cosmic reionization sources and history probed with large galaxy surveys and photoionization modeling ».

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 […]

Café-Club, Silvia MARTOCCHIA: « The origin of globular clusters and their anomalous stellar populations ».

Silvia MARTOCCHIA (Astronomisches Rechen-Institut, Universität Heidelberg): "The origin of globular clusters and their anomalous stellar populations". Take care, Carlo, Meriam, Mathilde ABSTRACT Globular clusters (GCs),agglomerates of hundreds of thousands stars, are among the oldest (age > 10 Gyr) luminous sources  in the Universe, bearing witness to the earliest stages of galaxy formation as well as […]

Cafe-Club, Denis BURGARELLA « Spectroscopic verification of very luminous galaxy candidates in the early universe ».

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 […]