XMM-Newton Users Handbook



A..3.1 4XMM

New XMM-Newton catalogues are created on a regular basis. The latest 4XMM-DR10 was released in December 2020. 4XMM-DR10 contains 849991 detections or 575158 unique sources drawn from 11647 XMM-Newton observations that were public by December 19th 2019, and covers a unique sky area of 1192 square degrees. 4XMM-DR10 provides approximately ten extra months of data compared to 4XMM-DR9 . Typical sensitivities in the 4XMM-DR10 catalogue are 6$\times $10$^{-15}$ (0.2-12.0 keV) and 1$\times $10$^{-14}$ erg cm$^{-2}$ s$^{-1}$ (2.0-12.0 keV).

Since 4XMM-DR9, spectral energy distributions (SEDs) are provided for each of the unique 4XMM sources after cross-match with 26 archival catalogues selected to cover the largest sky coverage and widest span in wavelength from UV to radio.

The stacked catalogue (4XMM-DR10s) has been compiled from 1,396 groups, comprising 7,803 overlapping good-quality XMM-Newton observations. It contains 335,812 unique sources, 256,213 of them multiply observed ()

XMM-Newton observers may find the 4XMM-DR10 amd 4XMM-DR10s catalogues useful in planning new observation proposals. Further details of each XMM-Newton EPIC catalogue, including available formats, access methods and the Catalogue User Guides, are available through links from the Catalogues home page, at:
http://xmmssc.irap.omp.eu/.
The 4XMM catalogues are described in and been submitted to Astronomy & Astrophysics and is under revision at the time of delivering this UHB (). Previous major revisions of the catalogue are also useful to understand the full content of the catalogue and their associated source product (Rosen, Webb, Watson et al., 2016, A&A, 590, A1 and Watson et al., 2009, A&A, 493, 339).

The catalogue can be retrieved from the XMM-Newton Science Archive web page in FITS or CSV format and is fully accessible through XMM-Newton Science Archive user interface.

Other useful interfaces to the 4XMM-DR9 catalogue include

IRAP catalogue server http://xmm-catalog.irap.omp.eu/
LEDAS: http://www.ledas.ac.uk,
XCATDB: http://xcatdb.unistra.fr,
HEASARC interface: http://heasarc.gsfc.nasa.gov/W3Browse/xmm-newton/xmmssc.html

which are particularly useful for exploring correlations with other catalogues.

European Space Agency - XMM-Newton Science Operations Centre