3 juillet - 6 juillet 2018


Relevés photométriques grand champ

Organisateurs (SOC) et contact principal:

Pierre Antilogus (LPNHE)
Stéphane Arnouts (LAM)
Emmanuel Bertin (IAP)
Hervé Bouy (Lab. Ast. de Bordeaux)
Jean-Charles Cuillandre (CEA Saclay / Obs. de Paris) jc.cuillandre .at. cea.fr
Yannick Mellier (IAP)
Annie Robin (Obs. de Besancon)
Sylvain de la Torre (LAM)


L'atelier rassemblera la communauté française impliquée sur les grands relevés photométriques grand champ optique et proche infrarouge présents (Gaia, DES, Pan-STARRS, DECaLS, HSC, CFIS, etc.) et futurs (Euclid, LSST, etc.) pour dresser un bilan de la science et des méthodes.

Description / Scientific context:

Wide field astronomy has now moved into an all-sky regime. French scientists are particularly active in the burgeoning arena of wide-field imaging, the international context of photometric surveys (deep and/or all-sky) being highly relevant for the many themes explored within the PNCG, PNPS, and PNP. The ESA Gaia mission is successfully on-going and will hold its scientific promises, and more, while the two prominent upcoming international imaging projects, Euclid and LSST, both cosmology driven (Stage IV dark energy measurement) will inherently produce datasets that will represent a treasure trove for scientific topics ranging from the Solar System to cosmology. This explains the large size of these scientific collaborations, with France very well positioned in the three projects listed above. There are other ambitious surveys currently in acquisition phase that focus on specific scientific aspects and, unsurprisingly, several French experts have found their way into these international collaborations (DES, Pan-STARRS, DECaLS, HSC, etc.). Critical complementarity for the Euclid space mission led to the development of tailored ground-based surveys such as the Canada-France Imaging Survey which will produce a stand-alone science that will stand on its own merit. Also, the various past and present wide-field imagers operated across the world create a vast archive of the sky which can be mined for specific groundbreaking science studies such as the French led COSMIC-DANCE project (origin of the IMF).


This workshop is endorsed by the PNCG although the science enabled by such surveys goes beyond galaxies&cosmology, hence we expect an audience extending to other poles (PNP, PNPS).

Main objectives of the workshop:

To bring together French scientists active in a truly fertile field but often segmented by the very nature of the individual projects and to trigger a community wide reflexion on the key role of large surveys in today's science and how to ensure their success.

Programme du 6 juillet 2018 (13:30-17:00)

13:00-13:50 Orateur: titre 1