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The MESSIER orbiter: unveiling galaxy formation
  Astronomy and astrophysics

Friday 19 September 2014
from 10:30 to 11:30
at FA31
Speaker : David Valls-Gabaud (LERMA, Observatoire de Paris (Meudon))
Abstract : MESSIER is a mini satellite aimed at exploring the last remaining niche in observational space: the extremely low surface brightness universe at UV and optical wavelengths. The two driving science cases target the mildly and highly non-linear regimes of structure formation to test two key predictions of the LCDM scenario. MESSIER has been designed for the detection of the putative large number of satellites orbiting normal galaxies and their associated tidal streams in the local universe, and for the identification of the filaments of the cosmic web and Lyman-alpha galaxies at z=0.65. Other key science issues will result as free by-products, such as the actual luminosity function of galaxies, the optical/UV cosmological background, the prevalence of warm molecular hydrogen at low redshift, and mass loss from red giants, among many others. Synergies with Gaia and EUCLID will likewise be discussed.

AlbaNova  | Last modified 05 December 2017 10:13  |  HELP