X-ray sky survey of bright, serendipitous sources with 2XMMi at the AIP Speaker: Alexander Kolodzig Origin: Humboldt-Uni Berlin, Germany Institute:AIP (Astronomical Institute Potsdam), Potsdam, Germany Tutor: Axel Schwope ESAC Summer Alumni Trainee Meeting 2009

The 2XMMi-Catalog 2XMMi = The incremental second XMM-Newton serendipitous source catalogue –largest X-ray source catalogue (2009) 4117XMM-Newton observations (2000 – 2008) – each field is visually screened ~1.0%sky area covered independently rows of X-ray detections unique X-ray sources 300columns of information per detection XMMi-Survey of bright sources at AIP - Alexander Kolodzig2

selection conditions (among others): –inspired by Della Ceca et al. (2004) –bright sources: SOFT-Band [ keV] –Rate> 0.01 counts/secLikelihood> 18 HARD-Band [ keV] –Rate> counts/secLikelihood> 12 –serendipitous sources just point sources off axis angle ≥ 3 arcmin  no center of the observation field just certain Observation Field Classifications XMMi-Survey of bright sources at AIP - Alexander Kolodzig3 source selection

matching with the catalogs: 1. SDSS (Sloan Digital Sky Survey) Data Release 6 2. BSS (XMM-Newton Bright Source Sample, Della Ceca et al. (2004)) –similar survey but of the BSS with 400 sources identified 3. NED (NASA/IPAC Extragalactic Database) 4. SIMBAD –identify possible optical counterparts add information of: –optical magnitude –red shift –source type XMMi-Survey of bright sources at AIP - Alexander Kolodzig4 source matching

XMMi-Survey of bright sources at AIP - Alexander Kolodzig5 SOFT-Band selection

XMMi-Survey of bright sources at AIP - Alexander Kolodzig6 SOFT-Band selection

XMMi-Survey of bright sources at AIP - Alexander Kolodzig7 HARD-Band selection

2XMMi-Catalog (in ecliptic coordinates) XMMi-Survey of bright sources at AIP - Alexander Kolodzig8 X-ray sky map

SOFT-Band (in ecliptic coordinates) XMMi-Survey of bright sources at AIP - Alexander Kolodzig9 sky map of identified sources

HARD-Band (in ecliptic coordinates) XMMi-Survey of bright sources at AIP - Alexander Kolodzig10 sky map of identified sources

XMMi-Survey of bright sources at AIP - Alexander Kolodzig11 distribution of known source types

XMMi-Survey of bright sources at AIP - Alexander Kolodzig12 distribution of known source types

SOFT-Band (in ecliptic coordinates) XMMi-Survey of bright sources at AIP - Alexander Kolodzig13 sky map of known source types

HARD-Band (in ecliptic coordinates) XMMi-Survey of bright sources at AIP - Alexander Kolodzig14 sky map of known source types

ratio: X-ray flux / optical flux SOFT-Band HARD-Band XMMi-Survey of bright sources at AIP - Alexander Kolodzig15 comparison of stars, galaxies & QSO’s

optical flux [mag] vs. galactic latitude [deg] XMMi-Survey of bright sources at AIP - Alexander Kolodzig16 comparison of stars, galaxies & QSO’s

optical flux [mag] vs. galactic latitude [deg] XMMi-Survey of bright sources at AIP - Alexander Kolodzig17 comparison of stars, galaxies & QSO’s

optical flux [mag] vs. red shift [log(z)] XMMi-Survey of bright sources at AIP - Alexander Kolodzig18 comparison of stars, galaxies & QSO’s

optical flux [mag] vs. red shift [log(z)] XMMi-Survey of bright sources at AIP - Alexander Kolodzig19 comparison of stars, galaxies & QSO’s

–compare optical type and X-ray source identify of additional or wrong optical counterparts –development of automatic type-identifying method for X-ray bright sources –new list of unknown, maybe interesting X-ray sources  characterisation of the X-ray sky XMMi-Survey of bright sources at AIP - Alexander Kolodzig20 further applications

Thank You For Your Attention! Contributions or Questions?

Backup - Slides

The 2XMMi-Catalog 2XMMi-Catalog: –constructed by SSC (XMM-Newton Survey Science Centre) –serendipitous: found by coincidence XMMi-Survey of bright sources at AIP - Alexander Kolodzig23

XMMi-Survey of bright sources at AIP - Alexander Kolodzig24 XMM-Newton Observatory

factsheet : –ESA Satellite, launched 1999 –most sensitive X-ray telescope (so far) –3 independent X-ray cameras (PN, MOS1, MOS2) energy range: keV field of view:0.5 degree –2 X-ray reflection grating spectrometers (RGS) –1 independent optical/UV monitor (OM) simultaneous longtime observations in x-ray and optical XMMi-Survey of bright sources at AIP - Alexander Kolodzig25 XMM-Newton Observatory

XMMi-Survey of bright sources at AIP - Alexander Kolodzig26 XMM-Newton Observatory

my tasks: 1. selecting the “bright, serendipitous sources” 2. matching with other catalogs 3. statistics XMMi-Survey of bright sources at AIP - Alexander Kolodzig27 Task - Overview

selection-conditions (among others): –serendipitous sources: just point sources Offaxis Angel ≥ 3 arcmin –no detection from the center of the observation field Observation Field Classification: –f = all detections are potential target –n = the target was not detected or in the field XMMi-Survey of bright sources at AIP - Alexander Kolodzig28 1. Selecting

Selection-Conditions: –OBS_CLASS < 4 Quality classification of the whole observation, <10% has been flagged –EP_EXTENT < 6 arsec extent radius of a source detected, < 6" = point-source –M1,M2,PN_SubMode= “FullWindow/ExtentedWindow” –TSERIES = True(has Light-Curve) –SPECTRA = True(has Spectra) –SUM_FLAG = 0 summary flag of the source is derived from the EPIC flag, 0 = “none of the flags was set” –M2_OFFAX ≥ 3 arcmin, ≤ 13 arcmin  just serendipitous sources –RATE and Likelihood for each BAND of the M2-Camera SOFT: >0.01 counts/sec,Likelihood >18 HARD: >0.002 counts/sec,Likelihood >12 –FIELD_CLASS: n,f  just serendipitous sources f - 'field', that is, all detections are potential target n - the target was not detected or in the field, whole field is serendipitous XMMi-Survey of bright sources at AIP - Alexander Kolodzig29

1. Selecting Data mainly from EPIC MOS2-Camera: –explained by the paper: –detector pattern simplifies the analysis of the field e.g. object source target is fully contained in the central chip –it has the best PSF –gaps between the EPIC MOS chips are narrower –sensitivity with the bright sources isn’t important XMMi-Survey of bright sources at AIP - Alexander Kolodzig30

Matching: –matching with coordinates (RA & DEC) –error-radius: 3 arcsec possible identification of wrong optical counterparts –Matching-Tool: “STILTS” (script-version of TOPCAT) –purpose: identify possible optical counterparts add Information of: –optical magnitude –red shift –source type XMMi-Survey of bright sources at AIP - Alexander Kolodzig31 2. Matching

matched with the following catalogs: 1. SDSS (Sloan Digital Sky Survey) Data Release 6 – sources (with known & unknown source types) –pre-matched catalog with 2XMMi 2. BSS (XMM-Newton Bright Source Sample, from SSC) – 400 sources –similar but smaller survey of 2XMMi 3. NED (NASA/IPAC Extragalactic Database) – 163 million sources (with known & unknown source types) –Data-Extraction difficult 4. SIMBAD – 4.6 million sources XMMi-Survey of bright sources at AIP - Alexander Kolodzig32 2. Matching

Plot: normalized with the circle area XMMi-Survey of bright sources at AIP - Alexander Kolodzig33 3. Statistics offaxis angel distribution

3. Statistics Results: Number of Sources SOFTHARD*Description 933 (0,4%) 217 (0,1%) serendipitous bright sources 468 (50%) 121 (56%) identify sources and known type 128 (14%) 23 (11%) identify sources but unknown type 337 (36%) 73 (34%) unknown sources (so far) *Hard-Band without “detections” which appear as well in the Soft-Band XMMi-Survey of bright sources at AIP - Alexander Kolodzig34

3. Statistics Results: Number of Det./Src. SOFTHARDStage Det.: without Field-Class /234*Det.: total Selection /217*Src.: total Selection 0.42%0.21%/0.10*%from now just source-numbers ??*identify with SDSS ?(?)?*(?*)identify with BSS (additional) ?(?)?*(?*)identify with NED (additional) ? (?%) ?* (?%) identify sources (known & unknown type) ? (?%) ?* (?%) unknown sources (so far) *Hard-Band without “detections” which appear as well in the Soft-Band XMMi-Survey of bright sources at AIP - Alexander Kolodzig35

2XMMi-Catalog (in ecliptic coordinates) XMMi-Survey of bright sources at AIP - Alexander Kolodzig36 X-ray sky map

X-ray flux [log(erg/(cm²  s))] vs. red shift [log(z)] XMMi-Survey of bright sources at AIP - Alexander Kolodzig37 comparison of stars, galaxies & QSO’s

red shift [log(z)] vs. galactic latitude [deg] XMMi-Survey of bright sources at AIP - Alexander Kolodzig38 comparison of stars, galaxies & QSO’s

Overview 1.? 2.? 3.? XMMi-Survey of bright sources at AIP - Alexander Kolodzig39