Chandra Orion Ultradeep Project: Observations and Source Lists

Konstantin V. Getman, The Pennsylvania State University
Ettore Flaccomio, INAF, Osservatorio Astronomico di Palermo G.S. Vaiana
Patrick S. Broos, The Pennsylvania State University
Joel H. Kastner, Rochester Institute of Technology
J. Li, Rochester Institute of Technology

© 2005 The American Astronomical Society

We thank George Chartas (Penn State) for providing the ARF correction tool xpsf and acknowledge the unusual efforts of the Chandra Mission Operations group in scheduling the COUP observations. We also thank the referee, M. Muno, for his time and many useful comments that improved this work. COUP is supported by Chandra guest observer grant SAO GO3-4009A ( PI: E. D. Feigelson). This work was also supported by the ACIS Team contract NAS8-38252, and the HRC Team contract NAS8-39073. E. F., F. D., G. M., and S. S. acknowledge financial contribution from Italian MIUR (COFIN-PRIN 2001) and from INAF. M. J. M. and G. M. acknowledge support from the European Commission Research Training Network ‘‘The Formation and Evolution of Young Stellar Clusters’’ (HPRN-CT-2000-00155). This publication makes use of data products from the Two Micron All Sky Survey (2MASS),which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. Facilities: CXO (ACIS), HST (IRS)

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We present a description of the data reduction methods and the derived catalog of more than 1600 X-ray point sources from the exceptionally deep 2003 January Chandra X-Ray Observatory (Chandra) observation of the Orion Nebula Cluster and embedded populations around OMC-1. The observation was obtained with Chandra’s Advanced CCD Imaging Spectrometer (ACIS) and has been nicknamed the Chandra Orion Ultradeep Project (COUP).With an 838 ks exposure made over a continuous period of 13.2 days, the COUP observation provides the most uniform and comprehensive data set on the X-ray emission of normal stars ever obtained in the history of X-ray astronomy.