TheXMM-Newtonserendipitous survey

Abstract

Context. Thanks to the large collecting area (3 × ∼1500 cm 2 at 1.5 keV) and wide field of view (30 across in full field mode) of the X-ray cameras on board the European Space Agency X-ray observatory XMM-Newton, each individual pointing can result in the detection of up to several hundred X-ray sources, most of which are newly discovered objects. Since XMM-Newton has now been in orbit for more than 15 yr, hundreds of thousands of sources have been detected. Aims. Recently, many improvements in the XMM-Newton data reduction algorithms have been made. These include enhanced source characterisation and reduced spurious source detections, refined astrometric precision of sources, greater net sensitivity for source detection, and the extraction of spectra and time series for fainter sources, both with better signal-to-noise. Thanks to these enhancements, the quality of the catalogue products has been much improved over earlier catalogues. Furthermore, almost 50% more observations are in the public domain compared to 2XMMi-DR3, allowing the XMM-Newton Survey Science Centre to produce a much larger and better quality X-ray source catalogue. Methods. The XMM-Newton Survey Science Centre has developed a pipeline to reduce the XMM-Newton data automatically. Using the latest version of this pipeline, along with better calibration, a new version of the catalogue has been produced, using XMM-Newton X-ray observations made public on or before 2013 December 31. Manual screening of all of the X-ray detections ensures the highest data quality. This catalogue is known as 3XMM. Results. In the latest release of the 3XMM catalogue, 3XMM-DR5, there are 565 962 X-ray detections comprising 396 910 unique X-ray sources. Spectra and lightcurves are provided for the 133 000 brightest sources. For all detections, the positions on the sky, a measure of the quality of the detection, and an evaluation of the X-ray variability is provided, along with the fluxes and count rates in 7 X-ray energy bands, the total 0.2-12 keV band counts, and four hardness ratios. With the aim of identifying the detections, a cross correlation with 228 catalogues of sources detected in all wavebands is also provided for each X-ray detection. Conclusions. 3XMM-DR5 is the largest X-ray source catalogue ever produced. Thanks to the large array of data products associated with each detection and each source, it is an excellent resource for finding new and extreme objects.Key words. catalogs -astronomical databases: miscellaneous -surveys -X-rays: general Based on observations obtained with XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA Member States and NASA.The catalogue is available at http://cdsarc.u-strasbg.fr/ viz-bin/VizieR?-meta.foot&-source=IX/46

Second ROSAT all-sky survey (2RXS) source catalogue

“…Using simply the nearest neighbour to the X-ray position within 1 , we point out that these cross-correlations do not always provide the most likely identification of the X-ray source, but reveal only potential counterparts. For the crosscorrelations we included the following X-ray source catalogues: 1RXS (Voges et al 1999), 2RXP (ROSAT Collaboration 2000), 3XMM (Rosen et al 2016), XMMSL1 (Saxton et al 2008), 1SXPS (Evans et al 2014), and object lists for active galactic nuclei (Véron-Cetty & Véron 2010), for stars (Tycho2, Høg et al 2000), the bright star catalogue (BSC, Ochsenbein & Halbwachs 1999), a catalogue of low-and high-mass X-ray binaries (Liu et al 2001), a catalogue of high-mass X-ray binaries (Liu et al 2006), a pulsar catalogue (Hobbs et al 2004), and the catalogue of variable 1RXS sources (Fuhrmeister & Schmitt 2003). The nearest counterpart in the cross-matching catalogues to a 2RXS source is listed in our catalogue.…”

Results from DROXO

“…The Spitzer measurements obtained within the c2d (From Molecular Cores to PlanetForming Disk) program confirmed the presence of mid-IR excess ). The X-ray emission associated with ISO-Oph 85 was first reported in the 3XMM Catalogue (Rosen et al 2016), and recognised as transient emission within the framework of the project EXTraS (Exploring the X-ray Transient and variable Sky, De Luca et al 2015) 2 during a test of algorithms for the detection of transient phenomena.…”

Toward Binding Database Interfaces with Scientific Papers

“…On the other hand it must be rich enough to provide non-trivial information. We started with indexing different XMM-Newton user guides (PDF), the catalog Web pages (HTML) and the reference paper [2] (PDF). The indexation process being rather short, it remains easy to modify the corpus and to rebuild the database.…”

“…After this period, the data are made public. Every year or so, all data are compiled in a catalog [2] merging all source detections and linking them with other scientific products. The whole catalog is accessible through different interfaces, among those is the XCatDB [3] deployed in Strasbourg by the XMM-Newton Science Survey Consortium.…”