An XMM-Newton International Survey (AXIS): A progress report
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Transcript of An XMM-Newton International Survey (AXIS): A progress report
An XMM-Newton An XMM-Newton International Survey International Survey
(AXIS): (AXIS): A progress reportA progress report
Xavier Barcons & Francisco CarreraXavier Barcons & Francisco Carrera
Instituto de Física de Cantabria Instituto de Física de Cantabria (CSIC-UC)(CSIC-UC)
on behalf of the AXIS consortium and the on behalf of the AXIS consortium and the
XMM Survey Science Centre XID wgXMM Survey Science Centre XID wg
The AXIS teamThe AXIS teamhttp://www.ifca.unican.es/~xray/AXIhttp://www.ifca.unican.es/~xray/AXI
SS
•Astrophysikalisches Institut Potsdam (Germany): Y. Hashimoto, G. Hasinger, G. Lamer, G. Szokoly, A. Schwope•Centre d'Etude Spatiale des Rayonnements (France): N. Webb• Institute of Astronomy, Cambridge (UK): R.G. McMahon, 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 • Laboratorio de Astrofísica Espacial y Física Fundamental, Madrid (Spain): J.M. Mas-Hesse• Max-Planck-Institut fuer extraterrestriche Physik (Germany): T. Boller • Mullard Space Science Laboratory, UCL (UK): M.S. Cropper, K.O. Mason, J.P.D. Mittaz, M.J. Page, S. R. Rosen• Observatoire Astronomique de Strasbourg (France): C. Motch, P. Guillout, L. Mirioni, I. Negueruela• 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, G.C. Stewart, T. Roberts, J.P. Osborne, N. Schurch, P.J. Wheatley, M.J. Ward, R.S. Warwick • XMM Science Operations Centre, (Spain): N. Schartel
The XMM Survey Science The XMM Survey Science Centre XID programmeCentre XID programme
Expect 50,000 new X-ray sources/yearExpect 50,000 new X-ray sources/year Core programmeCore programme (1000 sources/sample): (1000 sources/sample):
– High b High b faint samplefaint sample (10 (10-15-15 erg cm erg cm-2-2 s s-1-1) ) – High b High b medium samplemedium sample (10 (10-14-14 erg cm erg cm-2-2 s s-1-1))– High b High b bright samplebright sample (10 (10-13-13 erg cm erg cm-2-2 s s-1-1))– Galactic Plane SampleGalactic Plane Sample
Imaging programmeImaging programme (u,g’,r’,i’,Z,H) (u,g’,r’,i’,Z,H) Statistical identificationsStatistical identifications based on X-ray based on X-ray
properties & imaging programme.properties & imaging programme.
The Observatorio del The Observatorio del Roque de los MuchachosRoque de los Muchachos
JKT (1.0)
GTC (10)
TNG (3.5)
INT (2.5) WHT (4.2)
NOT (2.5)
AXIS:Breakdown of AXIS:Breakdown of observing nightsobserving nights
Telescope 2000 2001 TotalINT (2.5m) 10 8 18WHT (4.2m) 9 14 23TNG (3.5m) 7 14 21NOT(2.5m) 9 16 25Total 35 52 87Fraction 40% 60% 100%
We are here now!
AXIS instruments usedAXIS instruments used
Telescope Instrument CommentsINT 2.5m WFC WF optical imaging
CIRSI WF NIR imaging (H)WHT 4.2m WYFFOS Fibre (2.7”) spectroscopy
ISIS Long-slit spectroscopyNOT 2.5m ALFOSC Long-slit spectroscopyTNG 3.5m OIG Optical imaging
DOLORES Long-slit spectroscopy
AXIS wide-field imagingAXIS wide-field imaging
U(RGO)
g’(SDSS)
r’(SDSS)
i’(SDSS)
Z(Gunn)
H H Total
20 53 58 52 48 14 4 71
Optical: INT/WFCNear IR: INT/CIRSI
(includes M. Watson’s PATT Imaging proposal)
AXIS: Search for candidate AXIS: Search for candidate counterpartscounterparts
# counterparts 0 1 >1 TotalMed Sample field 2(10%) 18(78%) 3(12%) 23Galactic field 10(12%) 34(42%) 37(46%) 81
i’-band sources within either:5 (statistical) or5 arcsec
Clusters?Reddened sources?
AGNs beyond the Galaxy?
Candidate counterparts &Candidate counterparts &systematicssystematics
•Count rate > 0.005 ct s-1
•|b|>10º•Single candidate counterpart•108 sources66%
x1=2, 33%
P(x|x0)=|x-x0|*exp(-|x-x0|2/2)
Pobs(x)=f0*P(x|0)+f1*P(x|x1)
f0=0.67; x0=0 (fixed) f1=0.33; x1=2.0
AXIS identificationsAXIS identifications(as of March 1, 2001)(as of March 1, 2001)
Sources |b|>20 |b|<20 TotalBLAGN 55 5 60Act Coronae 10 14 24Stars 10 11 21NELGs 9 2 11Galaxies 11 - 11Acc binaries - 1 1Total 95 33 128
The AXIS medium sampleThe AXIS medium sample
35 sources brighter than 2 1035 sources brighter than 2 10-14-14 erg cm erg cm-2-2 s s-1 -1 in in the 0.5-4.5 keV band (2 XMM fields, the 0.5-4.5 keV band (2 XMM fields, excluding targets).excluding targets).
32/35 identified (>90%); remaining 3 have 32/35 identified (>90%); remaining 3 have i’>22.5i’>22.5
BLAGN 22 63%NELG 7 20%Gal 2 6%
AC 1 3%
Faint 3 8%
Medium sample: offsetsMedium sample: offsets
Medium sample: L-zMedium sample: L-z
Medium sample: z Medium sample: z distributiondistribution
0123456789
0.5
1.5
2.5
Redshift#
GalNELGBLAGN
Most objects at z~1-2 as expected from XRB
synthesis models
Medium sample: Medium sample: type 1 vs type 2 AGNtype 1 vs type 2 AGN
Expect ~60% of Expect ~60% of AGN to be AGN to be unabsorbed in the unabsorbed in the Comastri et al XRB Comastri et al XRB model model
We find 22/34 (65%) We find 22/34 (65%) BLAGN among the BLAGN among the extragalactic extragalactic sourcessources
Medium Sample: BAL Medium Sample: BAL QSOsQSOs
BAL QSOs in previous X-ray surveys:BAL QSOs in previous X-ray surveys:– 1 in Chandra deep survey (Giacconi et al 2001)1 in Chandra deep survey (Giacconi et al 2001)– 1 in hard X-ray selected ROSAT sample (Page et al 2001)1 in hard X-ray selected ROSAT sample (Page et al 2001)
– 1 in ISO/BeppoSAX survey (Alexander et al 2001)1 in ISO/BeppoSAX survey (Alexander et al 2001) In the medium sample we have 1 confirmed In the medium sample we have 1 confirmed
and 2 highly suggestive BAL QSOs (~5-10% and 2 highly suggestive BAL QSOs (~5-10% of BLAGN):of BLAGN):– Higher sensitivity of XMM-NewtonHigher sensitivity of XMM-Newton– Harder photon energies (even @ 4.5 keV)Harder photon energies (even @ 4.5 keV)
Medium sample: Medium sample: BAL QSO spectraBAL QSO spectra
Z=1.82
z=1.91
z=0.79?z=1.82
AXIS Galactic Plane AXIS Galactic Plane sample: sample:
the G21.5-09 field (b=-1º)the G21.5-09 field (b=-1º)
SS279
A Be+NS/WD? accreting A Be+NS/WD? accreting binarybinary
AXIS Galactic Plane AXIS Galactic Plane sample: sample:
Active CoronaeActive Coronae
Higher sensitivity highlights AC with very weak e.l.s
AXIS expectationsAXIS expectationsGoal AXIS-I AXIS-I + AXIS-IIIP (optical) 75 fields ~100 fieldsIP (infrared) 4 fields ~50 fieldsMS 100 sources 500 sourcesGP 50 sources 300 sourcesBS 50 sources 200 sources
We are here now!
ConclusionsConclusions Sensitivity & response to hard X-rays of XMM-Sensitivity & response to hard X-rays of XMM-
Newton make it sensitive to new classes of Newton make it sensitive to new classes of objectsobjects
Medium sample (> 2 10Medium sample (> 2 10-14-14 erg cm erg cm-2-2 s s-1-1): ): – 68% of sources are BLAGNs (consistency with unified XRB 68% of sources are BLAGNs (consistency with unified XRB
models)models)– z-distribution peaks at z~1-2z-distribution peaks at z~1-2– 5-10% of BLAGNS are BALs5-10% of BLAGNS are BALs
Galactic Plane:Galactic Plane:– Active Coronae with very weak emission linesActive Coronae with very weak emission lines– Accreting binariesAccreting binaries