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http://hdl.handle.net/20.500.12386/27068
Titolo: | C3, a command-line catalog cross-match tool for large astrophysical catalogs | Autori: | RICCIO, GIUSEPPE BRESCIA, Massimo CAVUOTI, STEFANO MERCURIO, AMATA DI GIORGIO, Anna Maria MOLINARI, Sergio |
Data pubblicazione: | 2017 | Rivista: | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | Numero: | 129 | Fascicolo: | 972 | Da pagina:: | 024005 | Abstract: | Modern Astrophysics is based on multi-wavelength data organized into large and heterogeneous catalogs. Hence, the need for efficient, reliable and scalable catalog cross-matching methods plays a crucial role in the era of the petabyte scale. Furthermore, multi-band data have often very different angular resolution, requiring the highest generality of cross-matching features, mainly in terms of region shape and resolution. In this work we present C <SUP>3</SUP> (Command-line Catalog Cross-match), a multi-platform application designed to efficiently cross-match massive catalogs. It is based on a multi-core parallel processing paradigm and conceived to be executed as a stand-alone command-line process or integrated within any generic data reduction/analysis pipeline, providing the maximum flexibility to the end-user, in terms of portability, parameter configuration, catalog formats, angular resolution, region shapes, coordinate units and cross-matching types. Using real data, extracted from public surveys, we discuss the cross-matching capabilities and computing time efficiency also through a direct comparison with some publicly available tools, chosen among the most used within the community, and representative of different interface paradigms. We verified that the C <SUP>3</SUP> tool has excellent capabilities to perform an efficient and reliable cross-matching between large data sets. Although the elliptical cross-match and the parametric handling of angular orientation and offset are known concepts in the astrophysical context, their availability in the presented command-line tool makes C <SUP>3</SUP> competitive in the context of public astronomical tools. | URI: | http://hdl.handle.net/20.500.12386/27068 | URL: | https://iopscience.iop.org/article/10.1088/1538-3873/129/972/024005/meta | ISSN: | 0004-6280 | DOI: | 10.1088/1538-3873/129/972/024005 | Bibcode ADS: | 2017PASP..129b4005R | Fulltext: | open |
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