Extended Chandra Deep Field South survey (E-CDF-S)

While the recent Chandra and XMM-Newton surveys have generated plentiful AGN samples, they do not detect significant numbers of moderate-luminosity AGN at high redshift (z>3).To pin down the cosmic evolution (i.e., luminosity function) of X-ray emitting AGN up to z~5, the region surrounding the CDF-S is being observed by Chandra to reach comparable depths over an area 4 times larger. The expanded areal coverage is crucial to measure the full extent of the large scale structures evident in the CDF-S and study the AGN clustering properties. We are beginning an optical spectroscopic identification program of the X-ray sources detected in the Extended Chandra Deep Field-South (E-CDF-S) using VLT/VIMOS. With extensive observations of this region in various wavebands (e.g. COMBO-17, GEMS Spitzer/HST, ESO Deep Public Survey), we are carrying out one of the deepest multi-wavelength campaigns to date XRBs and SNRs in the galaxies.

Fig 1: E-CDF-S Chandra pointings shown as red squares (17' x 17' each) overlaying the 1 Msec CDF-S. One of the two new 250 ksec Chandra observations is shown in the upper right corner. The two southern Chandra observations are scheduled this fall. The blue squares mark the GEMS HST/ACS coverage. The dashed regions mark the footprint of the VLT/VIMOS multi-slit spectrograph.

The main characteristics of the E-CDFS are:

Papers from this work:

Author: Ingo Lehmann, Date: 10/11/2004