Searches for high redshift galaxies using gravitational lensing

Details Searches for high redshift galaxies using gravitational lensing Searches for high redshift galaxies using gravitational lensing

2003-08-29

arxiv.org/abs/astro-ph/0308543v1

Astronomy and Astrophysics

Astrophysics

Proceedings for the "Multiwavelength Cosmology" conference held in Mykonos (June 17-20, 2003). 4 pages, 5 figures

Scientific paper

We present different methods used to identify high redshift (z>5) objects in the high-magnification regions of lensing galaxy clusters, taking advantage of very well constrained lensing models. The research procedures are explained and discussed. The detection of emission lines in the optical/NIR spectra, such as Lyman-alpha, allows us to determine the redshift of these sources. Thanks to the lensing magnification, it is possible to identify and to study more distant or intrinsically fainter objects with respect to standard field surveys.

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