Euclid OU-MER. Hervé Dole et al. OU-MER - Euclid FR - Jan H. Dole IAS

Transcription

1 Euclid OU-MER Hervé Dole et al. MER tasks 1. MER photometry strategies 2. Pipeline Interface Reconciliation Meeting in Rome, December Conclusions, perspectives 4. 1

2 1. MER tasks VIS NIR EXT providers Background subtraction Morphology, source classification Aperture photometry Object deblending Object detection PSF homogenization PSF fitting photometry Mosaics Multiband photometry Internal simulations PHZ SIR SHE customers MER deliveries Mosaics Final catalog (multiband photometry, classification) PSFs 2

3 1. MER tasks VIS NIR EXT providers Background subtraction Morphology, source classification Aperture photometry Object deblending Object detection PSF homogenization PSF fitting photometry Mosaics Multiband photometry Internal simulations PHZ SIR SHE customers MER products Mosaics Final catalog (multiband photometry, classification) PSFs MER: total of 13 WP w/ 3 french-led 3

4 2. MER photometry strategies MER multiband photometry Aperture Photometry on PSF-homogenized images Multiband PSF-fitting photometry Homogeneous PSF-matching Optimal PSF-matching PSF-fitting algorithm (e.g. TPHOT) All options require PSF homogenization kernels Homogenization to the largest PSF of the catalogue Homogenization band-to-band for each color Kernel used for model, minimization & check Courtesy Alexandre Boucaud 4

5 3. Pipeline Interface Reconciliation Meeting! Interface Reconciliation Meeting, Rome Dec 1-2! MER, VIS, NIR, SIR, PHZ, EXT, SHE, LE3, SGS, ST, WLSWG, SWG-NearbyUniv, SWG-Morphology (Duc, Huertas)! Formulation commune des processus, des sujets et identification des interlocuteurs! Topics: PSF, Mosaics, Object detection/cataloguing/ Photometry, Morphology, interfaces 5

6 3. Pipeline Interface Reconciliation Meeting! PSF: models & mesurements! Mosaics 6

7 3. Pipeline Interface Reconciliation Meeting! Cataloguing / Object detection / Photometry! Morphology SWG: P-A Duc, M. Huertas proximité SWG-OU souhaitable, à l exemple de CL-SWG LE3? 7

8 4. Conclusions, perspectives! MER-PHZ Data Challenge #2 ongoing/done! Protopipeline MER assembled! Important Rome December Meeting! Morphology: SWG & MER are already working (CEA/AIM, GEPI, IAS, OA Roma); will include VIS! Test of codes; meeting in january;! Next Garage Days will have MER/EXT topics discussed! Photometric quality in overdense regions (e.g galaxy clusters)! Some challenges! PSF requirements: NIR (undersampling) / VIS (color) > MER > PHZ! Background subtraction 8

9 EXTRA SLIDES 9

10 MER: Rome meeting, Dec 2015 outcome 10

11 MER: Rome meeting, Dec 2015 outcome 11

12 MER: Rome meeting, Dec 2015 outcome 12

13 MER: Rome meeting, Dec 2015 outcome 13

14 MER: Rome meeting, Dec 2015 outcome 14

15 Euclid SGS OU overview! VIS Calibrated single-epoch VIS exposures SHE Raw VIS VIS images & catalogue VIS catalogue with source density Photo-z EC Catalogue Shear EC Catalogue SIM Raw NISP-P NIR NIR images & catalogue MER Coadded images multi-band catalogue PHZ Survey mask Photo-z EC Catalogue LE3 Gaia catalogue Raw NISP-S NIR detections SIR Gaia Catalogue Euclidized Ground Based frames & catalogues NIR + EXT Detections NIR Detections with Photo-z 2D SIR images 1D SIR spectra SPE Spectroscopic Training Sample Spectra EC Catalogue Ground Based catalogues Ground Based Raw Images (DES - KIDS + HSC +...) EXT Level 1 Level 2 Level 3 Level EXT Image data Catalogue data HD, AB, July adapted from Santiago Serrano, May 2014" 15

16 work packages red: IAS responsability in OU-MER as of Dec 1st, 2015 OU-MER Lead: IT Co-lead: FR, DE SDC lead: IT FR: IAS, IRAP, APC tools -> multiband detection -> multi-wv photometry -> sims -> validation -> 16

17 Euclid PSF simulations VIS! NISP y-band! NISP j-band! NISP h-band! 40 x 40 arcsecs" Convolution of! input image with! the produced kernel! to the NISP h-band! premilinary simulated PSF kindly provided by OU-SIM P. Hudelot (IAP) and G. Seidel (MPIA) 17