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GSFC XMM-Newton GOF Status Report #324: XMM-NEWTON NEWS #199


             XMM-NEWTON NEWS #199    ---    01-Jun-2017


            XMM-Newton Science Operations Centre at
             ESA's European Space Astronomy Centre,
            Villanueva de la Canada,  Madrid, Spain


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- XSA v9.5 release with access to the 3XMM (DR7) Catalogue

- Release of the new version of the XMM-Newton Serendipitous Source
  Catalogue: 3XMM (DR7)

XSA v9.5 release with access to the 3XMM (DR7) Catalogue

A new version of the XMM-Newton Science Archive (XSA v9.5) is available


It includes, among other improvements, access to the incremental version
of the 3XMM catalogue (DR7):

New version of the XMM-Newton Serendipitous Source Catalogue: 3XMM (DR7)

A  new version of  the XMM-Newton  EPIC Serendipitous  Source Catalogue,
3XMM-DR7, has  been released.  The  catalogue includes an extra  year of
data with  respect to 3XMM-DR6,  with 727790 detections which  relate to
499266 unique  sources from  9710 observations that  were public  by the
31st December 2016. 3XMM-DR7 covers a total sky area, with at least 1 ks
exposure, of  ~1032 square degrees  if overlaps are taken  into account,
where  some  regions  of  the  sky  have been  pointed  as  many  as  59
times. 3XMM-DR7 represents  an increase of approximately 7%  in terms of
unique  sources  compared  with  3XMM-DR6,  that was  released  in  July
2016. Around 12%  of all the detections are  classified as extended, and
spectra  and time  series  have been  extracted  for around  22% of  the
sources. The  median positional uncertainty of  the catalogue detections
is  1.7  arcseconds  (with  a   standard  deviation  of  1.39)  and  the
astrometric quality of 3XMM is  improved with respect to prior releases.
Median sensitivities in the catalogue are ~6E-15 and ~8E-15 erg/cm2/s in
the soft (0.2-2 keV) and hard (2-12 keV) X-ray bands, respectively.

The creation of the 3XMM catalogue is a joint venture carried out by the
XMM-Newton Survey Science Centre  Consortium. The catalogue is described
in the  paper Rosen, Webb, Watson et  al. 2016, A&A, 590,  1. Details of
the  catalogue, the  catalogue  files and  full  3XMM documentation  are
available at


FITS files containing summary information about the observations used in
the catalogue are also provided. FITS  and CSV versions of the full 3XMM
catalogue and a slimline version of the FITS file are also available for
download at


The slimline version has only one row per unique source (rather than per
detection as in the main catalogue) and a reduced number of columns that
essentially pertain to the unique source quantities.

Alongside the XSA user interface, 3XMM is also distributed through:

XCATDB .... http://xcatdb.unistra.fr/3xmmdr7
HEASARC ... http://heasarc.gsfc.nasa.gov/W3Browse/xmm-newton/xmmssc.html
IRAP ...... http://xmm-catalog.irap.omp.eu/
LEDAS ..... http://www.ledas.ac.uk

Yours sincerely,

XMM-Newton SOC

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