Chandra X-ray Sources in the LALA Cetus Field

Details Chandra X-ray Sources in the LALA Cetus Field Chandra X-ray Sources in the LALA Cetus Field

2007-07-22

arxiv.org/abs/0707.3239v1

Astronomy and Astrophysics

Astrophysics

21 pages, including 6 figures, 1 table, ApJ accepted

Scientific paper

10.1086/521809

The 174 ks Chandra Advanced CCD Imaging Spectrometer exposure of the Large Area Lyman Alpha Survey (LALA) Cetus field is the second of the two deep Chandra images on LALA fields. In this paper we present the Chandra X-ray sources detected in the Cetus field, along with an analysis of X-ray source counts, stacked X-ray spectrum, and optical identifications. A total of 188 X-ray sources were detected: 174 in the 0.5-7.0 keV band, 154 in the 0.5-2.0 keV band, and 113 in the 2.0-7.0 keV band. The X-ray source counts were derived and compared with LALA Bootes field (172 ks exposure). Interestingly, we find consistent hard band X-ray source density, but 36+-12% higher soft band X-ray source density in Cetus field. The weighted stacked spectrum of the detected X-ray sources can be fitted by a powerlaw with photon index Gamma = 1.55. Based on the weighted stacked spectrum, we find that the resolved fraction of the X-ray background drops from 72+-1% at 0.5-1.0 keV to 63+-4% at 6.0-8.0 keV. The unresolved spectrum can be fitted by a powerlaw over the range 0.5-7 keV, with a photon index Gamma = 1.22. We also present optical counterparts for 154 of the X-ray sources, down to a limiting magnitude of r' = 25.9 (Vega), using a deep r' band image obtained with the MMT.

Affiliated with

Also associated with

No associations

Rating

Chandra X-ray Sources in the LALA Cetus Field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Chandra X-ray Sources in the LALA Cetus Field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chandra X-ray Sources in the LALA Cetus Field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-433953