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Galactic and extragalactic universe in the Maunakea Spectroscopic Explorer (MSE)/Square Kilometre Aarray(SKA) and pathfinders era

2-13 nov. 2020
Indian Institute of Astrophysics - Bangalore (Inde)
The Maunakea Spectroscopic Explorer (MSE) is a 11.25m optical and near-IR telescope with large (1.5 sq.deg) field of view, which is dedicated to multi-object spectroscopy with spectral resolution upto 40000. MSE is an essential follow-up spectroscopy instrument to current and next generations of multi wavelength imaging and spectroscopy surveys in optical/IR/radio domain (for e.g. MUSE, BLUE-MUSE, LSST,GAIA, Euclid, WFIRST, SKA) and designed to complement and go beyond the science goals of other planned spectroscopic capabilities like 4MOST,WEAVE etc. SKA is the world's largest radio telescope of next generation and has the capability of detecting galactic emission from supernovae, supernova remnants, transients and neutron starts, globular clusters, AGNs, galaxy clusters and groups, distant galaxies via synchrotron radiation into the epoch of re-ionization and tracing the neutral hydrogen content of galaxies up to z ~ 2. It will also discover many new faint unidentified galaxies whose optical spectroscopy will be crucial to maximize the scientific output. While photometric redshifts provide reasonable precision (i.e. quantification of the galaxy environment, or the measurement of ages and metallicity etc.), the discrimination of AGN from star forming regions requires optical emission line diagnostics. Thus combined optical and radio surveys are essential in our understanding of evolution of galactic sources, formation or galaxies from nearby to distant universe, star-forming galaxies and cosmology. MSE will also play a key role in the study of cosmo-chemistry by chemical tagging of stars and the study of abundances in stars and the associated nucleosynthesis. The aim of this Franco-Indian workshop is to address these science goals by bringing together the expertise available in France and India. Existing low frequency SKA pathfinders (LOFAR, ASKAP, uGMRT) and IR/optical facilities (MUSE, BLUE-MUSE, HST, ALMA, IRAM) are providing large survey data with spectral, morphological and redshifts catalogues, that can be used to investigate the above mentioned science goals and set-up the science case and users community for the future generation facilities like the MSE, TMT and SKA .
Discipline scientifique : Planète et Univers - Astrophysique

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