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The Chandra Source Catalog | | Ian N. Evans
; Francis A. Primini
; Kenny J. Glotfelty
; Craig S. Anderson
; Nina R. Bonaventura
; Judy C. Chen
; John E. Davis
; Stephen M. Doe
; Janet D. Evans
; Giuseppina Fabbiano
; Elizabeth C. Galle
; Danny G. Gibbs II
; John D. Grier
; Roger M. Hain
; Diane M. Hall
; Peter N. Harbo
; Xiangqun
; John C. Houck
; Margarita Karovska
; Vinay L. Kashyap
; Jennifer Lauer
; Michael L. McCollough
; Jonathan C. McDowell
; Joseph B. Miller
; Arik W. Mitschang
; Douglas L. Morgan
; Amy E. Mossman
; Joy S. Nichols
; Michael A. Nowak
; David A. Plummer
; Brian L. Refsdal
; Arnold H. Rots
; Aneta Siemiginowska
; Beth A. Sundheim
; Michael S. Tibbetts
; David W. Van Stone
; Sherry L. Winkelman
; Panagoula Zografou
; | | Date: |
25 May 2010 | | Abstract: | The Chandra Source Catalog (CSC) is a general purpose virtual X-ray
astrophysics facility that provides access to a carefully selected set of
generally useful quantities for individual X-ray sources, and is designed to
satisfy the needs of a broad-based group of scientists, including those who may
be less familiar with astronomical data analysis in the X-ray regime. The first
release of the CSC includes information about 94,676 distinct X-ray sources
detected in a subset of public ACIS imaging observations from roughly the first
eight years of the Chandra mission. This release of the catalog includes point
and compact sources with observed spatial extents <~ 30’’. The catalog (1)
provides access to the best estimates of the X-ray source properties for
detected sources, with good scientific fidelity, and directly supports
scientific analysis using the individual source data; (2) facilitates analysis
of a wide range of statistical properties for classes of X-ray sources; and (3)
provides efficient access to calibrated observational data and ancillary data
products for individual X-ray sources, so that users can perform detailed
further analysis using existing tools. The catalog includes real X-ray sources
detected with flux estimates that are at least 3 times their estimated 1 sigma
uncertainties in at least one energy band, while maintaining the number of
spurious sources at a level of <~ 1 false source per field for a 100 ks
observation. For each detected source, the CSC provides commonly tabulated
quantities, including source position, extent, multi-band fluxes, hardness
ratios, and variability statistics, derived from the observations in which the
source is detected. In addition to these traditional catalog elements, for each
X-ray source the CSC includes an extensive set of file-based data products that
can be manipulated interactively. | | Source: | arXiv, 1005.4665 | | Services: | Forum | Review | PDF | Favorites | |
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