Precise weak lensing constraints from deep high-resolution Ks images: VLT/HAWK-I analysis of the super-massive galaxy cluster RCS2 J 232727.7−020437 at z = 0.70

• Published in: Astronomy and astrophysics (Berlin) Vol. 610
• Main Authors: Schrabback, Tim, Schirmer, Mischa, van der Burg, Remco F. J., Hoekstra, Henk, Buddendiek, Axel, Applegate, Douglas, Bradač, Maruša, Eifler, Tim, Erben, Thomas, Gladders, Michael D., Hernández-Martín, Beatriz, Hildebrandt, Hendrik, Hoag, Austin, Klaes, Dominik, von der Linden, Anja, Marchesini, Danilo, Muzzin, Adam, Sharon, Keren, Stefanon, Mauro
• Format: Journal Article
• Language: English
• Published: Heidelberg EDP Sciences 01.02.2018
• Subjects: Computer simulation; Ellipticity; Galactic clusters; Galaxies; galaxies: clusters: individual: RCS2 J232727.7−020437; gravitational lensing: weak; Image quality; Image reconstruction; Image resolution; Mosaics; Photometry; Point spread functions; Red shift; Sensitivity; Star & galaxy formation; Universe

We demonstrate that deep good-seeing VLT/HAWK-I Ks images complemented with g + z-band photometry can yield a sensitivity for weak lensing studies of massive galaxy clusters at redshifts 0.7 ≲ z ≲ 1.1, which is almost identical to the sensitivity of HST/ACS mosaics of single-orbit depth. Key reasons...