Interfacing CSWG and OUSIM Romain Teyssier 1 Romain

Interfacing CSWG and OU-SIM Romain Teyssier 1 Romain Teyssier

CSWG and OU-SIM interface The role of the CSWG is to provide both data and applications to the EUCLID collaboration, and to OU-SIM in particular. 2 types of data: - Galaxy catalogues with spectral properties - Weak-lensing maps Ultimate goal: galaxy catalogues with the full corresponding 3 D gravitational potential information for ray-tracing We need to design a whole hierarchy of data sets, from very simple (analytical LF) to very elaborate (very large N-body data) that are consistent with each other. Consistency will be achieved only if a unique well-defined sources provides the model data and applications: this source is CSWG 2 Romain Teyssier

CSWG and OU-SIM interface Data types to be provided to OU-SIM: - Unlensed galaxy catalogues (sky coordinates and redshifts) with full spectral and shape information - Matter distribution (gravitational potential) in spherical shells (onion rings) from N-body simulations - Lensed galaxy catalogues - Stripped down galaxy catalogues - Shear map (non-linear or Gaussian field) - Analytical LF with Monte-Carlo realization - Models of foregrounds : local universe constraints, external galaxy/cluster catalog, Milky Way, stars ? These various datasets have to be consistent with each other. We need a common source (CSWG) and a common reference of cosmological parameters. 3 Romain Teyssier

CSWG and OU-SIM interface CSWG will provide data and applications with a well-documented origin. These data will depend on a unique set of cosmological parameters. It has been suggested that this set of cosmological parameters should be centralized with the EUCLID collaboration in a dedicated database coordinated by ESA [John Hoar]: the EUCLID parameter database for the universe description. 3 main types of parameters have been discussed: - Cosmological parameters - Galaxy formation parameters - Galaxy properties parameters When using our tools and data sets, OU-SIM will access this database to ensure consistency throughout the EUCLID collaboration. 4 Romain Teyssier

CSWG and OU-SIM interface Presentation of the most important data types from CSWG. - Halo and sub-halo catalogues [A. Knebe] - Galaxy catalogues and properties [C. Baugh] - Weak-lensing data [K. Benabed] Type and size of dataset to be presented and discussed. In order to interface properly with OU-SIM, we also need feedback from OU-SIM about the required simulations. Using detailed examples, we need to break-down our activity into a list of products that CSWG will provide to OU-SIM. 5 Romain Teyssier

CSWG and OU-SIM interface CSWG Luminosity function versus z Galaxy catalogue with redshift Galaxy catalogue with spectra Galaxy catalogue with shapes and spectra OU-SIM Draw random catalogue Add spectra Add shapes PSF and spectral response Simulated images with spectra and instrumental effects 6 Romain Teyssier