Low X-ray Luminosity Galaxy Clusters. III: Weak Lensing Mass Determination at 0.18 < z < 0.70

GONZALEZ ELIZABETH JOHANA; FOËX GAEL; NILO CASTELLÓN JOSÉ LUIS; DOMINGUEZ MARIANO; ALONSO MARÍA VICTORIA; MORESCHI OSVALDO; GALLO EMANUEL

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2015 vol. 452 p. 2225 - 2235

0035-8711

This is the third of a series of papers of low X-ray luminosity galaxy clusters. In this work wepresent the weak lensing analysis of eight clusters, based on observations obtained with theGemini Multi-Object Spectrograph in the g , r and i passbands. For this purpose, we have developed a pipeline for the lensing analysis of ground-based images and we have performed tests applied to simulated data. We have determined the masses of seven galaxy clusters, five of them measured for the first time. For the four clusters with availably spectroscopic data, we find a general agreement between the velocity dispersions obtained via weak lensing assuming a singular isothermal sphere profile, and those obtained from the redshift distributionof member galaxies. The correlation between our weak lensing mass determinations and the X-ray luminosities is suitably fitted by other observations of the M?L X relation and models.