Research

1. Evolution of the cluster optical galaxy luminosity function in the CFHTLS : breaking the degeneracy between mass and redshift
Sarron, F., Martinet, N., Durret, F., et al. 2017, A&A, in press

Galaxy cluster detected by AMASCFI at a redshift z = 0.52

2. Cosmic web filaments in the CFHTLS

I am currenlty working on the reconstruction of the cosmic web filaments from photometric redshift in large surveys. I am using mock data from lightcones taken in the Millennium simulation (Springer et al 2005, Merson et al 2013) with redshift of galaxies perturbed. Different level of noise is added to the true redshift of the galaxies, to obtain pseudo photometric redshifts representative of different current and upcoming surveys. This study will allow to quantify the quality of the recontruction depending on the photometric redshift quality. It will also be applied to CFHTLS data to study galaxy populations in the filaments.

Reconstruction of the cosmic web in the 100 deg2 EUCLID lightcone from Merson et al (2013). We use DisPerSE (Sousbie 2011) for the reconstruction, using true galaxy redshifts in a slice of width 5 cMpc at z=0.15

Contact

Adress:
Institut d'Astrophysique de Paris
98bis boulevard Arago
75014 Paris
FRANCE

Email:
florian.sarron@iap.fr

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