A two-dimensional Kolmogorov-Smirnov test for crowded field source detection: ROSAT sources in NGC 6397 Export

@misc{citeulike:712819, abstract = {We present a two-dimensional version of the classical one-dimensional Kolmogorov-Smirnov (K-S) test, extending an earlier idea due to Peacock (1983) and an implementation proposed by Fasano \& Franceschini (1987). The two-dimensional K-S test is used to optimise the goodness of fit in an iterative source-detection scheme for astronomical images. The method is applied to a ROSAT/HRI x-ray image of the post core-collapse globular cluster NGC 6397 to determine the most probable source distribution in the cluster core. Comparisons to other widely-used source detection methods, and to a Chandra image of the same field, show that our iteration scheme is superior in measuring statistics-limited sources in severely crowded fields.}, archivePrefix = {arXiv}, author = {Metchev, Stanimir A. and Grindlay, Jonathan E.}, citeulike-article-id = {712819}, citeulike-linkout-0 = {http://arxiv.org/abs/astro-ph/0204391}, citeulike-linkout-1 = {http://arxiv.org/pdf/astro-ph/0204391}, day = {23}, eprint = {astro-ph/0204391}, keywords = {2d, 3d, correlation, independence, kstest, statistics}, month = {Apr}, posted-at = {2006-06-27 18:56:20}, priority = {2}, title = {A two-dimensional Kolmogorov-Smirnov test for crowded field source detection: ROSAT sources in NGC 6397}, url = {http://arxiv.org/abs/astro-ph/0204391}, year = {2002} }

TY - ELEC ID - citeulike:712819 L3 - citeulike-article-id:712819 N2 - We present a two-dimensional version of the classical one-dimensional Kolmogorov-Smirnov (K-S) test, extending an earlier idea due to Peacock (1983) and an implementation proposed by Fasano & Franceschini (1987). The two-dimensional K-S test is used to optimise the goodness of fit in an iterative source-detection scheme for astronomical images. The method is applied to a ROSAT/HRI x-ray image of the post core-collapse globular cluster NGC 6397 to determine the most probable source distribution in the cluster core. Comparisons to other widely-used source detection methods, and to a Chandra image of the same field, show that our iteration scheme is superior in measuring statistics-limited sources in severely crowded fields. TI - A two-dimensional Kolmogorov-Smirnov test for crowded field source detection: ROSAT sources in NGC 6397 KW - 2d KW - 3d KW - correlation KW - independence KW - kstest KW - statistics AU - Metchev, Stanimir AU - Grindlay, Jonathan PY - 2002/Apr/23/ UR - http://arxiv.org/abs/astro-ph/0204391 ER -