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

ELIZABETH JOHANA GONZALE; GAEL FOËX; JOSÉ LUIS NILO; MARIANO J. DOMÍNGUEZ ROMERO; MARÍA VICTORIA ALONSO; DIEGO GARCÍA LAMBAS; OSVALDO MORESCHI; EMANUEL GALLO

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. Inthis work we present the weak lensing analysis of eight clusters, based on observationsobtained with the Gemini Multi-Object Spectrograph in the g ′ , r′ and i′ passbands.For this purpose, we have developed a pipeline for the lensing analysis of ground-basedimages and we have performed tests applied to simulated data.We have determined the masses of seven galaxy clusters, five of them measured for thefirst time. For the four clusters with availably spectroscopic data, we find a generalagreement between the velocity dispersions obtained via weak lensing assuming aSingular Isothermal Sphere profile, and those obtained from the redshift distributionof member galaxies. The correlation between our weak lensing mass determinationsand the X-ray luminosities are suitably fitted by other observations of the M − LXrelation and models.