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astro-ph2005
SMC: Stellar Populations through deep CMDs
Noelia E. D. Noel, Carme Gallart, Edgardo Costa +1
We present deep color-magnitud diagrams (CMDs) reaching the oldest main-sequence turnoffs for 12 fields in the SMC. The {\it B}-band and {\it R}-band observations were performed us…
astro-ph2005
AGN Unification and the X-ray Background
Ezequiel Treister, C. M. Urry
Active Galactic Nuclei (AGN) unification, which implies a large number of obscured AGN, can explain the optical, infrared and X-ray content of deep multiwavelength surveys. Here, w…