The OM team, under the auspices of the SSC, produces a catalogue of sources
detected by the Optical Monitor. The OM catalogue derives from a reprocessing of
publicly available OM data using a dedicated pipeline, which includes some
additional data that is excluded from the routine XMM data-processing pipeline.
The fourth version of the XMM-Newton OM Serendipitous Ultraviolet Source Survey
Catalogue (XMM-SUSS4) was released in December 2018. It includes public data up to
July 2017, plus 30 public ToO and calibration observations up to
the end of May 2018.
The catalogue embraces 9749 XMM-Newton observations and contains 8,176,156 detections of 5,503,765 sources, of which 1,035,453 have been observed more than once, thus allowing variability studies.
The XMM-SUSS4 catalogue can be accessed through the XSA search interface. Further, either the complete catalogue or a reduced version of it (the SLIM version) can be downloaded from the XSA.