Euclid OU-MER Herv Dole et al. MER tasks 1. MER photometry - - PowerPoint PPT Presentation

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Euclid OU-MER Herv Dole et al. MER tasks 1. MER photometry strategies 2. Pipeline Interface Reconciliation Meeting in Rome, December 2015 3. Conclusions, perspectives 4. OU-MER - Euclid FR - Jan 2016 - H. Dole IAS 1 1. MER

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Hervé Dole et al.

OU-MER - Euclid FR - Jan 2016 - H. Dole IAS 1

Euclid OU-MER

MER tasks – 1. MER photometry strategies – 2. Pipeline Interface Reconciliation Meeting in Rome, December 2015 – 3. Conclusions, perspectives – 4.

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1. MER tasks

Background subtraction

VIS NIR EXT

Object detection Multiband photometry Mosaics PSF homogenization Object deblending Morphology, source classification MER deliveries

Mosaics
Final catalog

(multiband photometry, classification)

PSFs

PHZ SIR SHE

providers customers

OU-MER - Euclid FR - Jan 2016 - H. Dole IAS 2

Internal simulations Aperture photometry PSF fitting photometry

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1. MER tasks

Background subtraction

VIS NIR EXT

Object detection Multiband photometry Mosaics PSF homogenization Object deblending Morphology, source classification MER products

Mosaics
Final catalog

(multiband photometry, classification)

PSFs

PHZ SIR SHE

providers customers

OU-MER - Euclid FR - Jan 2016 - H. Dole IAS 3

Internal simulations Aperture photometry PSF fitting photometry MER: total of 13 WP w/ 3 french-led

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2. MER photometry strategies

Aperture Photometry on PSF-homogenized images Multiband PSF-fitting photometry PSF-fitting algorithm (e.g. TPHOT) Optimal PSF-matching Homogeneous PSF-matching

MER multiband photometry

All options require PSF homogenization kernels Homogenization to the largest PSF

f the catalogue

Homogenization “band-to-band” for each color Kernel used for model, minimization & check

OU-MER - Euclid FR - Jan 2016 - H. Dole IAS 4

Courtesy Alexandre Boucaud

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3. Pipeline Interface Reconciliation Meeting

Interface Reconciliation Meeting, Rome Dec 1-2

http://wiki.cosmos.esa.int/euclid/index.php/OU-MER_Interface/Pipeline_Reconciliation_Meeting,_1-2_December_in_Rome,_Italy

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

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3. Pipeline Interface Reconciliation Meeting

PSF: models & mesurements Mosaics

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3. Pipeline Interface Reconciliation Meeting

Cataloguing / Object detection / Photometry Morphology

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proximité SWG-OU souhaitable, à l’exemple de CL-SWG–LE3 ? SWG: P-A Duc, M. Huertas

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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

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