3 juin - 6 juin 2014

S09

Comment fabrique-t-on une galaxie? L'évolution des baryons dans les halos de matière noire

How to make a galaxy ? The evolution of baryons in dark matter halos

The growth of galaxies over cosmic time is the result of complex interactions between several physical processes acting at different scales, such as gas flow in the heart of dark matter halos, dynamic instabilities in disks, gravitational interactions between galaxies, star formation, feedback, chemical evolution of the interstellar and intergalactic gas, growth of supermassive black holes, and their impact on the surrounding gas .

While the last decade has seen a dramatic increase in the quality and quantity of data, in particular for the early stages of growth of galaxies at high redshift, the physics of these processes, such as those associated with feedback from supernovae and AGN is still poorly understood, often dependent on very few assumptions and poorly constrained. Semi- analytical models provide a framework at large-scales on how to explore the relative importance of these different processes in the induced scenarios of formation and evolution of galaxies, which can then be compared with observations. Hydrodynamic simulations have, in turn, reached the maturity to follow the dynamics of dark and luminous matter on galactic scales that are much more self-consistent and less dependent on ad-hoc assumptions as semi-analytical models. But these simulations are limited in resolution, leaving many uncertainties on the physical processes at small scales.

SF2A This workshop aim is to provide an update on our current knowledge in this area and identify key issues that may be addressed in the coming years, both from the point of view of simulations and observations.

Jeudi 5 Juin
Session I : Star Formation & Feedback
14:00 : F. Bournaud The balance between gravity, turbulence and feedback processes : regulating star formation and galaxy growth from high to low redshifts
14:30 : P. Ocvirk Formation des galaxies en hydrodynamique radiative avec RAMSES-CUDATON: une solution au probleme des satellites manquants?
14:50 : A. Hallé Molecular hydrogen and star formation in disc galaxies
15:10 : G. Mamon The frequency of young galaxies deduced from analytical and semi-analytical galaxy formation models and SDSS spectral models: over 5 orders of magnitude discrepancy!
15:30 - 15:50 : M. Cousin Galaxy stellar mass assembly: supernova feedback, photo-ionization and no-star-forming gas reservoir
16h-16h30 Pause café
Session II : Accretion & Mergers
16:30 : C. Péroux Probing Gas Flows around Galaxies with SINFONI
17:00 : R. Gavazzi Evolution of the mass content of massive Early Type Galaxies: comparing simulations with strong lensing constraints from the CFHT Legacy Survey
17:20 : R. Ibata How to build a real stellar halo, with step-by-step instructions
17:40 : Z. Sakr Galaxy Formation History Through Hod Model From Euclid Mock Catalogs
Vendredi 6 Juin
Session III : AGN/QSOs/Black Holes
14:00 : O. Roos The limited impact of AGN feedback on star formation in simulated high-redshift disk galaxies
14:20 : P. Guillard Turbulence, outflows and cosmic rays: disentangling key agents of feedback
14:40 : N Nesvadba Planck's Dusty Gems: The brightest gravitationally lensed high-redshift galaxies in the Planck all-sky survey
Session IV : Chemical evolution
15:10 : B. Lemasle High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy
15:30-15:50: M. Kubryk Migration radiale des étoiles: effets sur la formation et l'évolution de la Voie
16h-16h30 Pause café
16:30 : P. di Matteo The first 13 Gyr of evolution of the Milky Way: clues from solar vicinity data and modeling
Discussion
16:50 : All PNCG: Workshops, Actions, Role...

e-posters in this session

ROCCA VOLMERANGE BrigitteStarburst and AGN from distant Radio Galaxies with Herschelfile not uploaded
RAICHOOR AnandPhotometric redshifts for the NGVSfile not uploaded
LAPORTE NicolasThe first Frontier Fields cluster : 4.5 μm excess in a z~8 galaxy candidate in Abell 2744file not uploaded
DURRET FlorenceGalaxy clusters based on photometric redshifts in the SDSS Stripe 82 file not uploaded
MAMON GarySimple recipes of galaxy formation: a unique tool to address several fundamental questions on galaxiesfile not uploaded
FREUNDLICH JonathanOn the stability of self-gravitating filamentsfile not uploaded
ACEBRON AnaSearching for filaments and structures around DAFT/FADA clusters of galaxiesfile not uploaded
ASCASO BegoñaThe Violent Youth of Bright and Massive Cluster Galaxies and their Maturation over 7 Billion Yearsfile not uploaded
MARTINET NicolasObservation of galaxy quenching in DAFT/FADA clustersfile not uploaded
DURRIVE Jean-BaptisteMagnetogenesis at the Epoch of Reionizationfile not uploaded
ASCASO BegoñaSimulating mock catalogues to provide cosmological constraints from galaxy clusters.file not uploaded
LICITRA RossellaCluster detection in the Next Generation Virgo Cluster Surveyfile not uploaded
CHARDIN JonathanSimulation of the Ly-alpha forest with radiative transferfile not uploaded
SALOMON Jean-BaptisteThe intrinsic ellipticity of dwarf spheroidal galaxiesfile not uploaded
MELCHIOR Anne-LaureUnderstanding the state of the gas surrounding Andromeda's black hole. file not uploaded
GILLET NicolasVAST PLANES OF SATELLITES IN HIGH RESOLUTION HYDRODYNAMICAL SIMULATION: COMPARISON TO ANDROMEDAfile not uploaded
TREBITSCH MaximeLyman-alpha blobs: polarisation arising from cold accretionfile not uploaded
SALOME Quentin3C 285: CO observations of the galaxy and its radio-lobefile not uploaded
BOISSIER SamuelI will not really contribute with a presentation.e-poster (click to see)