Weak lensing analysis of the galaxy cluster RX J1117.4+0743 ([VMF 98] 097)

GONZALEZ ELIZABETH JOHANA; DOMINGUEZ MARIANO; MORESCHI OSVALDO; GARCÍA LAMBAS DIEGO; FOËX GAEL; NILO CASTELLÓN JOSÉ LUIS; ALONSO MARÍA VICTORIA

Tandil, Buenos Aires

Congreso; Reunión Anual de la Asociación de Astronomía Argentina; 2013

Asociación Argentina de Astronomía

We present a weak lensing analysis of the cluster RX J1117.4+0743 ([VMF 98] 097) at z=0.485, based on data collected with Gemini South Telescope. Previously, we used the DES Cluster Simulations to check the reliability of our analysis and results of our pipeline. The cluster was formerly analyzed by Carrasco et al. 2007, and they found a large discrepancy between the mass estimated from X­ray observations and lensing estimates, exceeding the X­ray mass by more than a factor 3. Our result for the mass from the weak lensing analysis is lower than the mass obtained by Carrasco et al. and closer to the X­ray mass, However, the presence of substructure in this cluster could strongly affect the results.