The XMM-Newton Survey Science Centre identifdication (XID) programme Xavier Barcons Instituto de Física de Cantabria (CSIC-UC) Santander, Spain

Xavier Barcons, IFCA, Santander, Spain … on behalf of the SSCentre XID working group Astrophysikalisches Institut Potsdam (Germany): Y. Hashimoto, G. Lamer, G. Szokoly, A. Schwope Centre d'Etude Spatiale des Rayonnements (France): N. Webb Institute of Astronomy, Cambridge (UK): R.G. McMahon, W. Yuan, A.C. Fabian, C.S. Crawford Instituto de Astrofísica de Canarias, Tenerife (Spain):I. Pérez-Fournon Instituto de Física de Cantabria, Santander (Spain): X. Barcons, F.J. Carrera, M.T. Ceballos, S. Mateos Subaru Telescope: K. Sekiguchi Max-Planck-Institut fuer extraterrestriche Physik (Germany): T. Boller, G. Hasinger, W. Pietsch Mullard Space Science Laboratory, UCL (UK): M.S. Cropper, K.O. Mason, M.J. Page, S. R. Rosen Observatoire Astr de Strasbourg (France): C. Motch, P. Guillout, L. Mirioni, I. Negueruela, M. Pakull Osservatorio Astronomico di Brera, Milano (Italy): T. Maccacaro, R. Della Ceca, P. Severgnini University of Bristol (UK): D.M. Worrall, M. Bremer, M. Birkinshaw University of Central Lancashire (UK): G.E. Bromage, B.J.M. Hassall University of Leicester, (UK): M.G. Watson, J.P. Pye, D. Baskill, G.C. Stewart, T.P. Roberts, J.P. Osborne, N. Schurch, P.J. Wheatley, M.J. Ward, R.S. Warwick, J.A. Tedds XMM Science Operations Centre, (Spain): N. Schartel Harvard Smithsonian Astrophysical Observatory: M. Elvis

Xavier Barcons, IFCA, Santander, Spain Index n The XID programme: goals and strategy n The imaging programme n The extragalactic core programme: l The faint sample (almost nothing to report) l The medium sample l The bright sample (talk by R. Della Ceca) n The Galactic Plane sample (poster by C. Motch) n Other activities n Outlook

Xavier Barcons, IFCA, Santander, Spain The XMM-Newton serendipitous sky survey n Every new XMM-Newton pointing discovers ~ serendipitous X-ray sources. n About 50,000 new X-ray sources/year n Overall goal: build up a catalogue with all serendipitous X-ray sources and their likely identifications

Xavier Barcons, IFCA, Santander, Spain The XID strategy: statistical identifications X-ray properties Optical/IR photometric imaging + Probable identification = Need a large training sample with proper spectroscopic id’s: the core programme

Xavier Barcons, IFCA, Santander, Spain XID programme details n Core programme (1000 sources/sample): l High b faint sample (~ erg cm -2 s -1 ) l High b medium sample (~ erg cm -2 s -1 ) l High b bright sample (~ erg cm -2 s -1 ) l Galactic Plane Sample (~ erg cm -2 s -1) n Imaging programme (u,g’,r’,i’,Z,H): a large number of XMM-Newton observations

Xavier Barcons, IFCA, Santander, Spain XID ground-based resources   Optical/IR imaging:   INT 2.5m with WFC   ESO 2.2m with WFI   Subaru 8.3m with SuprimeCam & FOCAS   Optical spectroscopy   WHT 4.2m with ISIS   WHT 4.2m with WYFFOS/AUTOFIB2   TNG 3.5m with DOLORES   NOT 2.5m with ALFOSC   Subaru 8.3m with FOCAS

Xavier Barcons, IFCA, Santander, Spain XID observational strategy

Xavier Barcons, IFCA, Santander, Spain AXIS: An XMM-Newton International Survey n International Time Project (ITP) approved by the Comité Científico Internacional for years 2000 and 2001: total of 85 nights spread in 4 telescopes n Major boost to XID programme in: l Imaging programme l High galactic latitude medium sample l High galactic latitude bright sample l Galactic Plane survey

Xavier Barcons, IFCA, Santander, Spain Imaging programme Optical: INT2.5m/WFC + ESO2.2m/WFI Near IR: INT2.5m/CIRSI XMM-Newton imaged fields in various filters Last Updated: 28 October 2001

Xavier Barcons, IFCA, Santander, Spain Depth of images SDSS Galaxies Stars

Xavier Barcons, IFCA, Santander, Spain Seeing distribution

Xavier Barcons, IFCA, Santander, Spain Astrometric calibration n APM or USNO stars per CCD; each of 4 CCD chips is fit independently n Median rms 0.25”; believed due to internal errors in external catalogue and proper motions Chip-4

Xavier Barcons, IFCA, Santander, Spain Automated Photometric calibration The majority of the images have photometric calibration error < 0.1 mag Currently exploring systematics due to variations in zero-point and extinction constants

Xavier Barcons, IFCA, Santander, Spain Public release of XID optical images n Fully-reduced CCD mosaics covering almost entire EPIC FOV in various filters n Astrometrically and photometrically calibrated images and optical source catalogues n Release of optical images corresponding to public XMM-Newton data Release by end of January 2002

Xavier Barcons, IFCA, Santander, Spain Spectroscopic identifications Search for candidate counterparts i’-band sources within either: 5  (statistical) or 5 arcsec Bright Sample: >95% success with 1 single candidate Medium Sample: 90% success, 3/4 with single candidate Galactic Plane: |b|~10-20º, 85% success, 1/2 with single candidate |b|~0-10º, very large star density: no unique candidate

Xavier Barcons, IFCA, Santander, Spain High-b identifications 119 BLAGN 23 NELG 15 Galaxies 2 BLLAC 41 Stars

Xavier Barcons, IFCA, Santander, Spain The high-b medium sample n Flux limit 2  erg cm -2 s -1 ( KeV) n Source density ~110 sources deg -2 n 30 fields in the North: 498 X-ray sources l 122 identifications (25%) n By ~March 2002, expect a sample of 15 fields (212 X-ray sources) identified to ~90% n ~a few % of X-ray sources do not show optical counterpart within ~22.5 mag

Xavier Barcons, IFCA, Santander, Spain Medium Sample: preliminary results n 2 fields (Mkn205 and G Pos_2), 29 X-ray sources over 0.26 deg -2 : l 19 Broad Line AGN (incl 2 BAL QSOs) l 6 Narrow-Line AGN l 1 Abs line Galaxy (NGC 4291) l 1 Active Coronal Star l 2 Unidentified (1 unobserved, 1 very faint)

Xavier Barcons, IFCA, Santander, Spain MS: Hardness ratios HR 1 = keV  keV HR 2 = keV  keV Marginal evidence for NLAGN being absorbed BLAGN BLAGN have  ~2 at keV and  ~1.6 at keV

Xavier Barcons, IFCA, Santander, Spain MS: The X-ray source population ASCA 2-10 keV ROSAT keV

Xavier Barcons, IFCA, Santander, Spain °49 23h33 23h33ZAnd °0018h28 Ridge °2918h27 Ridge ° 34 18h33 G blDecRaField °04 08h36 08h36 GRB The Galactic Plane sample ~0.18 deg ksec Ridge 3 ~ 0.36 deg 2 30 ksec G Area Exposure time Field

Xavier Barcons, IFCA, Santander, Spain The Galactic plane at |b|=0º 01 Extragalac. sources 7 (33 %) 57 (74%) Unidentified 01 Accreting sources 14 (66%) 18 (23%) Stellar coronae 2177 Number of sources Ridge 3 G Field

Xavier Barcons, IFCA, Santander, Spain Me Stars H  flux versus X-ray flux for ROSAT and XMM Me stars G & Ridge 3 Rosat Cygnus Region (Motch et al. 1997)

Xavier Barcons, IFCA, Santander, Spain The Galactic Plane landscape Active coronae exhibit soft X-ray spectra (HR 2 < ~ 0) Most soft X-ray sources have active coronae counterparts The population of Me stars seen by XMM-Newtin is similar to that detected by ROSAT, just seen farther away…. The Me to K-A star ratio is ~ 30%, similar to that of ROSAT No Cataclysmic Variable has been yet detected down to an estimated R magnitude of ~ 19.

Xavier Barcons, IFCA, Santander, Spain The Be accreting binary SS397 SS397

Xavier Barcons, IFCA, Santander, Spain SS397: a Be+NS/WD accreting binary? n Too X-ray luminous to be an isolated Be0.5 star: binary n Hard X-ray spectrum (  =1.5 or kT= 9 keV) n L X ~10 32 erg s -1, very low for a NS accreting binary n A very good candidate to Be+WD binary

Xavier Barcons, IFCA, Santander, Spain Other on-going or planned XID activities n Pilot cluster survey n Pilot hard X-ray source survey n EPIC astrometry studies (poster by J. Tedds & Mike Watson) n X-ray spectral templates / X-ray colours of various populations n Bi-variate flux distributions

Xavier Barcons, IFCA, Santander, Spain Special thanks to... n Mike Watson, Jonathan Tedds: X-ray sources, overall managing n Mat Page: Fibre spectroscopy n Francisco Carrera: AXIS programme and much more n Richard McMahon: Imaging programme n Christian Motch: Galactic plane survey n Axel Schwope: Southern observations n Tommaso Maccacaro, Roberto Della Ceca: Bright sample