martin still, christopher brindle, mat page,

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nam08, belfast apr 1-4, 2008

• martin still, christopher brindle, mat page,
• vladimir yershov, alice breeveld, houri ziaeepour
  
• (ucl-mssl)
• simon rosen (leicester)
• antonio talavera (esa)

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comparison with GALEX source sample
content sources
Filter FOV (arcmin2) max(c/s) zero-pnt (mag) eff. area (cm2) bandpass (angstrom) PSF (arcsec)
XMM-OM UVW2 36 400 16.57 4 1805-2454 2.0
XMM-OM UVM2 23 400 17.41 9 1970-2675 1.8
XMM-OM UVW1 51 400 18.57 22 2410-3565 2.0
XMM-OM U 400 19.19 43 3030-3890 1.6
XMM-OM B 400 19.08 40 3815-4910 1.4
XMM-OM V 400 17.92 24 5020-5870 1.4
GALEX FUV 41 252 89 18.82 36 1344-1786 4.3
GALEX NUV 41 252 471 20.08 62 1771-2831 5.3

• galex has ?? sky coverage
• galex has bluer energy sensitivity
• simultaneous 2xmm source data
• less source confusion from om psf
• om is deeper than galex ais (mAB lt 20.5)
• three om colours in nuv passband
• om sensitivity within the galex-sdss energy gap
• variability on hour and year timescales

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all sources without quality flags
content source depth
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astrometric correction using usno-b1.0
content astrometry
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filtered xmm pointings included within catalogue
content sky coverage
Filter W (deg2) Nsrc (gt 3s) fqlty ()
UVW2 36.0 1.0 x 105 75
UVM2 23.2 1.3 x 105 77
UVW1 51.4 5.5 x 105 74
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number of quality issues decreases into the uv
quality flagging
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observed and computed tracks of galaxies and stars
colour-colour planes
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main sequence and galactic dust columns
colour-colour planes
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extra-galactic sources and redshift
colour-colour planes
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uv counterparts
2xmm variable sources
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summary
xmm-newton serendipitous uv source catalogue

• available through the esa xsa system and vo from
  july 2008. queries before then martin still
  mds_at_mssl.ucl.ac.uk
• 700,000 uv sources from 2,388 xmm-newton
  pointings.
• 3-colour data across the galex nuv band.
• simultaneous x-ray and optical data.
• source variability from multiple exposures and
  pointings.
• catalogue will go deeper still when individual
  exposures are mosaiced in the xmm sas pipeline.
• swift-uvot uv source archive to follow.