Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.0401m&link_type=abstract
American Astronomical Society, HEAD meeting #10, #4.01
Astronomy and Astrophysics
Astronomy
Scientific paper
Stacking analysis is a strong tool to probe the average X-ray properties of X-ray faint objects as a class, each of which are fainter than the detection limit as an individual source. This is especially the case for deep/wide surveys with Chandra, with its superb spatial resolution and the existence of survey data on the fields with extensive multiwavelength coverages. We present an easy-to use web-based tool (http://saturn.phys.cmu.edu/cstack), which enables users to perform a stacking analysis on a number of Chandra survey fields.Currently supported are C-COSMOS, Extended Chandra Deep Field South (proprietary access, password protected), Chandra Deep Fields South, and North (Guest access user=password=guest). For an input list of positions (e.g. galaxies selected from an optical catalog), the WWW tool returns stacked Chandra images in soft and hard bands and statistical analysis results including bootstrap histograms. We present running examples on the C-COSMOS data. The next version will also include the use of off-axis dependent aperture size, automatic exclusions of resolved sources, and histograms of stacks on random positions.
C-COSMOS Team
Griffiths Richard E.
Miyaji Takamitsu
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