The Brightest Serendipitous X-ray Sources in ChaMPlane
Abstract
The Chandra Multiwavelength Plane (ChaMPlane) Survey is a comprehensive effort to constrain the population of accretion-powered and coronal low-luminosity X-ray sources (L_X < 10^33 erg s^-1) in the Galaxy. ChaMPlane incorporates X-ray, optical, and infrared observations of fields in the Galactic Plane imaged with Chandra in the past six years. We present the results of a population study of the brightest X-ray sources in ChaMPlane. We use X-ray spectral fitting, X-ray lightcurve analysis, and optical photometry of candidate counterparts to determine the properties of 21 sources. Our sample includes a previously unreported quiescent low-mass X-ray binary or cataclysmic variable (R = 20.9) and ten stellar sources (12.5 < R < 15), including one flare star (R = 17.3). We find that quantile analysis, a new technique developed for constraining the X-ray spectral properties of low-count sources, is largely consistent with spectral fitting.
Cite
@article{arxiv.0803.2565,
title = {The Brightest Serendipitous X-ray Sources in ChaMPlane},
author = {Kyle Penner and Maureen van den Berg and JaeSub Hong and Silas Laycock and Ping Zhao and Jonathan Grindlay},
journal= {arXiv preprint arXiv:0803.2565},
year = {2008}
}
Comments
4 pages, 3 figures; to appear in ASP conference proceedings of "Frank N. Bash Symposium 2007: New Horizons in Astronomy", editors: A. Frebel, J. Maund, J. Shen, M. Siegel