X-ray Processing of ChaMPlane Fields: Methods and Initial Results for Selected Anti-Galactic Center Fields

Abstract

We describe the X-ray analysis procedure of the on-going Chandra Multiwavelength Plane (ChaMPlane) survey and report the initial results from the analysis of 15 selected anti-Galactic center observations (90 deg < l < 270 deg). We describe the X-ray analysis procedures for ChaMPlane using custom-developed analysis tools appropriate for Galactic sources but also of general use: optimum photometry in crowded fields using advanced techniques for overlapping sources, rigorous astrometry and 95% error circles for combining X-ray images or matching to optical/IR images, and application of quantile analysis for spectral analysis of faint sources. We apply these techniques to 15 anti-Galactic center observations (of 14 distinct fields) in which we have detected 921 X-ray point sources. We present logN-logS distributions and quantile analysis to show that in the hard band (2 - 8 keV) active galactic nuclei dominate the sources. Complete analysis of all ChaMPlane anti-Galactic center fields will be given in a subsequent paper, followed by papers on sources in the Galactic center and Bulge regions.

13 pages, 5 figures, 8 tables, accepted in ApJ for publication

References in corpus (10)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• A Wavelet-Based Algorithm for the Spatial Analysis of Poisson Data
• A three-dimensional Galactic extinction model
• Chandra Multi-wavelength Project (ChaMP). I. First X-ray Source Catalog
• New spectral classification technique for X-ray sources: quantile analysis
• Chandra Multi-wavelength Project (ChaMP). II. First Results of X-ray Source Properties
• Chandra Multiwavelength Plane (ChaMPlane) Survey: an Introduction
• X-ray source overdensities in Chandra distant cluster fields: a new probe to map the cosmic tapestry?
• Ultra-Luminous X-ray Source Populations in Normal Galaxies: a Preliminary Survey with Chandra
• Chandra Multi-wavelength Plane (ChaMPlane) Survey: Design and Initial Results

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