Survey Details

The Chandra AEGIS-X survey consists of seven 200 ks pointings, in addition to a previous 200 ks observation of the Groth-Westphal strip portion of the EGS (from AO3). The layout of the AEGIS-X survey is shown below. Most of the Chandra pointings (denoted EGS-1, EGS-2 etc) have been observed four times with Chandra, for approximately 50 ks duration each. EGS-6 was observed multiple times.

 

In July 2007 a further 1.8 Ms of Chandra ACIS-I time was awarded in AO-9 to observe three of the EGS fields (EGS-3, EGS-4 and EGS-5) to a total depth of 800 ks each. This very deep Chandra survey will overlap with the ultra-deep Spitzer data from the FIDEL survey.

 

DSS image of EGS showing Chandra layout relative to DEEP2 and ACS coverage.

 

The survey started on 14th March 2005 and was finished on 11th December 2005. Some details of each of the observations and JPEG images of the Chandra data are provided below.

 

FieldCXO ObsIDExposureFieldCXO ObsIDExposure
EGS-1 5841 44.5 ks EGS-1 6210 46.5 ks
EGS-1 5842 46.4 ks EGS-2 6212 46.8 ks
EGS-2 5843 44.5 ks EGS-2 6213 48.1 ks
EGS-2 5844 48.9 ks EGS-5 6218 41.1 ks
EGS-3 5845 48.4 ks EGS-5 5849 50.1 ks
EGS-3 5846 49.4 ks EGS-1 6211 36.1 ks
EGS-4 5847 44.6 ks EGS-1 7180 20.7 ks
EGS-4 5848 44.5 ks EGS-5 5850 46.1 ks
EGS-7 6222 34.7 ks EGS-6 5851 36.1 ks
EGS-7 6223 49.5 ks EGS-6 7181 16.1 ks
EGS-7 6366 14.6 ks EGS-7 5853 43.1 ks
EGS-6 6220 37.6 ks EGS-7 7187   6.6 ks
EGS-6 6221   3.7 ks EGS-6 7236 20.6 ks
EGS-6 6391   8.5 ks EGS-6 7238   9.6 ks
EGS-4 6216 49.5 ks EGS-6 5852 10.7 ks
EGS-4 6217 49.5 ks EGS-6 7237 17.1 ks
EGS-5 6219 50.1 ks EGS-6 7188   2.6 ks
EGS-3 6214 48.1 ks EGS-6 7169 16.2 ks
EGS-3 6215 49.2 ks EGS-6 7239 16.2 ks
EGS-7 5854 50.7 ks

 

Colour Images 

 

Colour composite image of the 1.8 Ms Chandra survey of the EGS. The image was obtained by combining three energy bands: 0.5-2 keV (red), 2-4 keV (green) and 4-7 keV (blue). Click on the image to enlarge it.

 

 


Smoothed colour image of the 1.8 Ms Chandra survey of the EGS. The image was smoothed using a Gaussian function. The three energy bands were: 0.5-2 keV (red), 2-4 keV (green) and 4-7 keV (blue). Click on the image to enlarge it.