- The Calan-Yale Deep Extragalactic Research (CYDER) Survey: Optical Properties and Deep Spectroscopy of Extragalactic Serendipitous X-Ray Sources
- AAS/High Energy Astrophysics Division
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Anton Pannekoek Institute for Astronomy (API)
We present the results of deep optical imaging and spectroscopy of archival Chandra sources with intermediate fluxes (>1e-15 erg/cm2/sec). 267 Chandra sources were detected in 5 archival fields, with 106 spectroscopic IDs obtained using Magellan and the VLT. The survey is designed to fill the gap between deep, narrow surveys like CDF-N/S and broad, shallow surveys like CHAMP. We discuss the fraction of obscured sources, their redshift distribution, and their overall optical properties. Two high redshift, x-ray selected AGN with z> 4 were found.
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