The Extended Chandra Deep Field-South Survey

This web site provides data files, including the X-ray source catalogs, as well as papers based on public data from the Extended Chandra Deep Field-South (E-CDF-S) survey. This survey consists of 4 Chandra ACIS-I pointings covering approximately 1100 square arcminutes on the sky (~0.3 square degrees) surrounding the original Chandra Deep Field-South field to a depth of ~228 ks. This is one of the largest Chandra surveys, in terms of area, ever conducted at such depth. This public survey was performed as part of the approved guest observer program in Cycle 5 (proposal number 05900218; PI Niel Brandt). In the primary and secondary catalogs available below, 651 unique sources are found --- 587 X-ray sources in the primary catalog and 64 X-ray sources in the secondary catalog. The differential and cumulative flux distributions are in good agreement with the number counts from previous deep X-ray surveys and with the predictions from an AGN population synthesis model that can explain the X-ray background. In general, fainter sources have harder X-ray spectra, consistent with the hypothesis that these sources are mainly obscured AGN. The multiwavelength properties of these sources, studied as part of the one-square-degree MUltiwavelength Survey by Yale/Chile (MUSYC; Gawiser et al. 2005), will be the subject of forthcoming papers. On the right is a "false color" image of the E-CDF-S field created in DS9. Here, the soft 0.5--2.0 keV band is colored red, the hard 2.0--4.0 keV band is colored green, and the ultra-hard 4.0--8.0 keV band is colored blue. Shanil Virani, Ezequiel Treister, C. Megan Urry, and Eric Gawiser Dept. of Astronomy,Yale University

Journal Papers

• The Extended Chandra Deep Field South Survey: X-ray Point-Source Catalog (AJ, 2006, 131, 2373)
  
• Table 4: Primary X-ray Source Catalog (Probability Threshold=1E-7; ASCII; machine readable) (UPDATED: 28 Aug 2005)
  NOTE: For a probability threshold of 1E-7, 2-3 false sources are expected.
• Table 5: Secondary X-ray Source Catalog (Probability Threshold=1E-6; ASCII; machine readable) (UPDATED: 28 Aug 2005)
  NOTE: For a probability threshold of 1E-6, 20-30 false sources are expected.
• Table 6: Catalog of Wavdetect-collapsed Sources (Probability Threshold=1E-7; ASCII; machine readable)
  NOTE: Catalog of 70 sources for which one of the axes of the wavdetect-determined source ellipse collapsed.




BAND	MERGED EVENT LIST	EXPOSURE-CORRECTED IMAGE	EXPOSURE MAP
FULL	ecdfs_full_merged.fits.gz	ecdfs_full_expcorr.fits.gz	ecdfs-full_expmap.fits.gz
SOFT	ecdfs_soft_merged.fits.gz	ecdfs_soft_expcorr.fits.gz	ecdfs-soft_expmap.fits.gz
HARD	ecdfs_hard_merged.fits.gz	ecdfs_hard_expcorr.fits.gz	ecdfs-hard_expmap.fits.gz

• The Physical Nature of Lyman Alpha Emitting Galaxies at z=3.1
  Gawiser, E., et al., 2006, ApJ, 642, L13.

• Lyman Alpha-Emitting Galaxies at z = 3.1: L* Progenitors Experiencing Rapid Star Formation
  Gawiser, E., et al., 2007, ApJ, 671, 278.

• The UV colours of high-redshift early-type galaxies: evidence for recent star formation and stellar mass assembly over the last 8 billion years
  Kaviraj, S., et al., 2008, MNRAS, 388, 67.

• Clustering of Intermediate-Luminosity X-Ray-Selected Active Galactic Nuclei at z ~ 3
  Francke, H., et al., 2008, ApJ, 673, L13.

• Mid-infrared Properties and Color Selection for X-ray Detected AGN in the MUSYC ECDF-S field
  Cardamone, C., et al., 2008, ApJ, 680, 130.
• Table 1: X-Ray and Infrared Properties of MUSYC ECDF-S X-Ray Sources (ASCII; machine readable)

• Optical Spectroscopy of X-ray Sources in the Extended Chandra Deep Field-South
  Treister, E., Virani, S., et al. 2009, ApJ, in press.
  
  
• Table 2: X-Ray, Optical, and Mid-IR Properties of the X-Ray Sources in the ECDF-S (ASCII; machine readable)

Conference Presentations

• The Extended Chandra Deep Field South Survey: Optical Properties of X-ray Detected Sources
  To be published in the proceedings of "The X-ray Universe 2005" conference, San Lorenzo de El Escorial, Madrid, Spain, 26-30 Sept 2005. [poster]
• The Extended Chandra Deep Field South Survey: Optical & NIR Properties of X-ray Detected Sources
  Display paper presented at "Six Years of Science with Chandra" conference, Cambridge, MA, 2-4 Nov 2005. [poster]
• LBG, LAE & AGN at z=3 in MUSYC
  Francke, Gawiser, Virani, Treister, Urry & MUSYC Collaboration, 2005, AAS 207, 8020F
• EXOs and Obscured AGN in the MUSYC Survey
  Urry, Virani, Van Duyne, Treister, Taylor, Gawiser, van Dokkum & MUSYC Collaboration, 2005, AAS 207, 8021U
• Optical Properties of AGN in the ECDFS Field of the MUSYC Survey
  Coppi, Virani, Van Duyne, Urry, Treister, Gawiser, Francke & MUSYC Collaboration, 2005, AAS 207, 8022C
• Near-Infrared Properties of AGN in the MUSYC Survey
  Van Duyne, Urry, Virani, Treister, Taylor, Gawiser, van Dokkum & MUSYC Collaboration, 2005, AAS 207, 8018V
• X-ray Properties of Star-forming Galaxies in the MUSYC Survey
  Richardson, Virani, Gawiser, Urry, Treister, Van Duyne, Miller & MUSYC Collaboration, 2005, AAS 207, 8019R