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The ROSAT international X-ray/Optical survey (RIXOS): Source catalogue

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posted on 08.10.2012, 13:45 by K.O. Mason, F.J. Carrera, G. Hasinger, H. Andernach, A. Aragon-Salamanca, X. Barcons, R. Bower, W.N. Brandt, G. Branduardi-Raymont, J. Burgos-Martin, F. Cabrera-Guerra, R. Carballo, F. Castander, R.S. Ellis, J.I. Gonzalez-Serrano, E. Martinez-Gonzalez, J.M. Martin-Mirones, R.G. McMahon, J.P.D. Mittaz, K.L. Nicholson, M.J. Page, I. Perez-Fournon, E.M. Puchnarewicz, E. Romero-Colmenero, A.D. Schwope, B. Vila, Michael G. Watson, D. Wonnacott
We describe the ROSAT International X-ray/Optical Survey (RIXOS), a medium-sensitivity survey and optical identification of X-ray sources discovered in ROSAT high Galactic latitude fields (|b|>28°) and observed with the Position Sensitive Proportional Counter (PSPC) detector. The survey made use of the central 17 arcmin of each ROSAT field. A flux limit of 3×10−14 erg cm−2 s−1 (0.5–2 keV) was adopted for the survey, and a minimum exposure time of 8000 s was required for qualifying ROSAT observations. X-ray sources in the survey are therefore substantially above the detection threshold of each field used, and many contain enough counts to allow the X-ray spectral slope to be estimated. Spectroscopic observations of potential counterparts were obtained of all sources down to the survey limit in 64 fields, totalling a sky area of 15.77 deg2. Positive optical identifications are made for 94 per cent of the 296 sources thus examined. A further 18 fields (4.44 deg2), containing 105 sources above the 3×10−14 erg cm−2 s−1 survey limit, are completely optically identified to a higher flux of 8×10−14 erg cm−2 s−1 (0.5–2 keV). Optical spectroscopic data are supplemented by deep CCD imaging of many sources to reveal the morphology of the optical counterparts, and objects too faint to register on Sky Survey plates. The faintest optical counterparts have R∼22. This paper describes the survey method, and presents a catalogue of the RIXOS sources and their optical identifications. Finding charts based on Sky Survey data are given for each source, supplemented by CCD imaging where necessary.

History

Citation

Monthly Notices of the Royal Astronomical Society, 2000, 311 (3), pp. 456-484 (29)

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy

Version

VoR (Version of Record)

Published in

Monthly Notices of the Royal Astronomical Society

Publisher

Blackwell Publishing on behalf of the Royal Astronomical Society

issn

0035-8711

eissn

1365-2966

Copyright date

2000

Available date

08/10/2012

Publisher version

http://onlinelibrary.wiley.com/doi/10.1046/j.1365-8711.2000.03026.x/abstract

Language

en