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J. Hong, J. Grindlay, E. Schlegel, S. Laycock, M. van den Berg, P. Zhao, X. Koenig (CfA), H. Cohn, P. Lugger, A. Rogel (IU)
Quantile analysis is a new spectral classification technique for X-ray sources with limited statistics and is superior to conventional approaches using X-ray colors and hardness ratio. We apply the quantile analysis technique to X-ray sources discovered by the Chandra Multiwavelength Plane (ChaMPlane) survey. This is a particularly efficient way to pick out source populations from their X-ray colors, including the hard sources expected for accretion-powered systems (see Grindlay et al). We investigate the X-ray spectral properties of X-ray sources in the Galactic plane, using the quantile color-color diagram (QCCD) based on median and quartile ratio. We use QCCDs to test various spectral models such as power-law, thermal Bremsstrahlung, black body emission on ChaMPlane fields to pick out hard sources (see Grindlay et al).
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The author(s) of this abstract have provided an email address for comments about the abstract: jaesub@head.cfa.harvard.edu
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Bulletin of the American Astronomical Society, 36 #3
© 2004. The American Astronomical Soceity.