TUNA Lunch Talk:

Paula Aguirre

Pontificia Universidad Catolica

Galaxy candidates at z~7-8 in the field of Galaxy Clusters

May 29

12:10PM, Room 230, NRAO, Edgemont Road


The amplification by the lensing effect of massive galaxy clusters enables us to study faint background galaxies in the fields. We have carried out a search for z-band dropout sources in the cluster fields in which HST/ACS optical images. The J-band images were obtained with Magellan and VLT. We used VLT/ISAAC to obtain spectra of ten z-band-dropout candidates to search for emission lines. Our ultimate goal is to use the emission-line properties in galaxies to probe the epoch of reionzation of the intergalactic medium.