CM2-3 - (CM2) Cosmology with the Cosmic Microwave Background: Implications of Planck and Other Experiments in Temperature and Polarization (CM3) Galaxy Clusters as probes for Cosmology and Dark Matter |
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Speaker |
Delgado-Correal, Camilo |
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Coauthors |
Rosati, Piero; Bartosch Caminha, Gabriel; CLASH-VLT team |
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Identification of low luminosity high redshift galaxies by using galaxy clusters as cosmic telescopes |
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Abstract |
Current models of structure formation suggest that the first galaxies formed at z >~ 10 when the universe was < 500 Myr old, so the detection and characterization of galaxies at these early epochs is critical to estimate the star rate formation rate density and their contribution to the reionization. The CLASH project (Cluster Lensing And Supernova survey with Hubble) combines an HST Treasury program to obtain panchromatic (ACS+WFC3) imaging of 25 carefully selected massive clusters, with other multi-wavelength observations, including a large spectroscopic campaign with VLT/VIMOS. Gravitational lensing, which is particularly powerful in several CLASH clusters, improve the efficiency of finding low-luminosity (i.e. L< L*) galaxies, which are thought to play a critical role in reionizing the Universe at z~10. In this poster we will give some high-lights of the CLASH-VLT project and show the sample of ~200 magnified lensed galaxies at 3<z<7, whose photometric and spectroscopic data can be used to characterize the physical properties of the low-luminosity population at high-z, thus complementing field studies at L>~L*. |
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Talk view |
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