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IX/41   XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3    (XMM-SSC, 2010)

XMM-Newton Serendipitous Source Catalogue: 2XMMi-DR3 XMM-Newton Survey Science Centre Consortium <XMM-SSC, Leicester, UK (2010)>
ADC_Keywords: X-ray sources ; Surveys ; Mission_Name: XMM Description: The 2XMMi-DR3 catalogue is the fifth publicly released XMM X-ray source catalogue produced by the XMM Survey Science Centre (SSC) consortium on behalf of ESA. It follows the 1XMM (Cat. IX/37, released in April 2003), 2XMMp (July 2006), 2XMM (Cat. IX/39, August 2007) and 2XMMi (Cat. IX/40, August 2008) catalogues: 2XMMp was a preliminary version of 2XMM. 2XMMi and 2XMMi-DR3 are incremental versions of the 2XMM catalogue. In summary, the versions are: -------------------------------------------- Name DR# Designation Year Cat. -------------------------------------------- 2XMMp 0 2XMMp-DR0 2006 2XMM 1 2XMM-DR1 2007 IX/39 2XMMi 2 2XMMi-DR2 2008 IX/40 2XMMi-DR3 3 2XMMi-DR3 2010 IX/41 -------------------------------------------- The production and content of the 2XMM catalogue is described in detail in "The XMM-Newton serendipitous survey. V. The second XMM-Newton serendipitous source catalogue", M.G. Watson et al., 2009A&A...493..339W; there are no significant differences in the processing between the 2XMM, 2XMMi and 2XMMi-DR3 observations The "slim" version of the catalogue (file "xmm2r3s.dat") contains one row per unique source, while the the main catalogue has one row per detection. This slim version includes 38 columns, essentially those containing information about the unique sources, while the full catalogue (file "xmm2r3.fit") describes the 353191 detections with 299 columns. The slim version also contains a column with links to the LEDAS summary pages. In the case of sources with multiple detections the summary page of the best detection is selected (i.e., the detection with the largest exposure time, summed over all cameras), and the summary page gives cross-links to the other detections. Nomenclature Notes: Sources that originated in the 2XMM catalogue or were new in the 2XMMi catalogue will retain their IAU name nomenclature in 2XMMi-DR3, i.e. their IAU names start with a '2XMM' or '2XMMi' designator, respectively. Sources appearing for the first time in 2XMMi-DR3 are assigned an IAU name also starting with a '2XMMi' designator; this IAU name is provided in the catalogue. The correct, full nomenclature for a specific detection from these catalogues is the IAU name, followed by a colon and the detection identification number, that is: "2XMM Jhhmmss.s+ddmmss:detid" or "2XMMi Jhhmmss.s+ddmmss:detid". File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file xmm2ir3s.dat 405 262902 The 2XMMi-DR3 Catalog, "slim" version 2XMMiDR3v1.fits 2880 162394 The 2XMMi-DR3 Catalog (299 columns for 353191 detections), FITS format
See also: http://xmmssc-www.star.le.ac.uk/Catalogue/2XMMi-DR3/ : 2XMMi-DR3 Home Page http://xmmssc-www.star.le.ac.uk/Catalogue : XMM-Newton Home Page B/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center) http://xmmssc-www.star.le.ac.uk/ : XMM-Newton Survey Science Centre, University of Leicester http://xmm.vilspa.esa.es/ : XMM-Newton Science Operations Centre http://xcatdb.u-strasbg.fr/xcat-db/ : XCAT-DB at SSC institute, Strasbourg J/A+A/493/339 : XMM-Newton serendipitous Survey V. (Watson+, 2009) Byte-by-byte Description of file: xmm2ir3s.dat
Bytes Format Units Label Explanations
1- 6 I6 --- Source [1,263230] (SRCID) Unique source index 8- 29 A22 --- 2XMMi (IAUNAME) Unique source name (8) 31- 38 F8.4 deg RAdeg (SC_RA) Mean source right ascension (ICRS) 40- 47 F8.4 deg DEdeg (SC_DEC) Mean source declination (ICRS) 49- 52 F4.1 arcsec ePos (SC_POSERR) Mean error on position 54- 62 E9.3 --- srcML (SC_DET_ML) Source detection likelihood (2) 64- 74 E11.5 mW/m2 Flux1 (SCEP1_FLUX) Mean flux in 0.2-0.5keV band 76- 84 E9.3 mW/m2 e_Flux1 (SCEP1FLUXERR) Mean error on Flux1 86- 96 E11.5 mW/m2 Flux2 (SCEP2_FLUX) Mean flux in 0.5-1.0keV band 98-106 E9.3 mW/m2 e_Flux2 (SCEP2FLUXERR) Mean error on Flux2 108-118 E11.5 mW/m2 Flux3 (SCEP3_FLUX) Mean flux in 1.0-2.0keV band 120-128 E9.3 mW/m2 e_Flux3 (SCEP3FLUXERR) Mean error on Flux3 130-140 E11.5 mW/m2 Flux4 (SCEP4_FLUX) Mean flux in 2.0-4.5keV band 142-150 E9.3 mW/m2 e_Flux4 (SCEP4FLUXERR) Mean error on Flux4 152-162 E11.5 mW/m2 Flux5 (SCEP5_FLUX) Mean flux in 4.5-12keV band 164-172 E9.3 mW/m2 e_Flux5 (SCEP5FLUXERR) Mean error on Flux5 174-184 E11.5 mW/m2 Flux8 (SCEP8_FLUX) Mean flux in 0.2-12keV band 186-194 E9.3 mW/m2 e_Flux8 (SCEP8FLUXERR) Mean error on Flux 196-206 E11.5 mW/m2 Flux9 ? (SCEP9_FLUX) Mean flux in 0.5-4.5keV band 208-216 E9.3 mW/m2 e_Flux9 ? (SCEP9FLUXERR) Mean error on Flux14 218-223 F6.3 --- HR1 ? (SC_HR1) Hardness ratio of bands 1 and 2 (1) 225-230 F6.3 --- e_HR1 ? (SCHR1ERR) Mean error on HR1 232-237 F6.3 --- HR2 ? (SC_HR2) Hardness ratio of bands 2 and 3 (1) 239-244 F6.3 --- e_HR2 ? (SCHR2ERR) Mean error on HR2 246-251 F6.3 --- HR3 ? (SC_HR3) Hardness ratio of bands 3 and 4 (1) 253-258 F6.3 --- e_HR3 ? (SCHR3ERR) Mean error on HR3 260-265 F6.3 --- HR4 ? (SC_HR4) Hardness ratio of bands 4 and 5 (1) 267-272 F6.3 --- e_HR4 ? (SCHR4ERR) Mean error on HR4 274-278 F5.1 arcsec ext (SC_EXTENT) Total band extent 280-288 E9.3 --- extML (SC_EXT_ML) Detection likelihood of the extended source (3) 290-294 F5.3 --- Cst [0,1]? (SC_CHI2PROB) Constant probability (4) 296 I1 --- V [0,1] (SCVARFLAG) Variability flag (V=1) 298 I1 --- S [0,4] (SC_SUM_FLAG) summary flag (5) 300-301 I2 --- Nd (N_DETECTIONS) Number of detections 303 I1 --- c [0,1] (CONFUSED) Confusion flag (7) 305 I1 --- f1 [0,3] (SC_DR_FIRST) Release source added (6) 307 I1 --- fu [0,3] (SC_DR_LAST) Release source modified (6) 309-405 A97 --- uLEDAS (LEDAS_URL) URL for details at LEDAS
Note (1): The hardness ratio is defined as (F2-F1)/(F2+F1) if F2 is the flux in the harder band (the hardness ratio is therefore -1 for softest sources and +1 for hardest sources). The energy bands are (note they differ from catalog 1XMM): 1 = 0.2 - 0.5 keV (narrow band) 2 = 0.5 - 1.0 keV (narrow band) 3 = 1.0 - 2.0 keV (narrow band) 4 = 2.0 - 4.5 keV (narrow band) 5 = 4.5 - 12.0 keV (narrow band) 6 = 0.2 - 2.0 keV = soft broad band, no images made 7 = 2.0 - 12.0 keV = hard broad band, no images made 8 = 0.2 - 12.0 keV = total band 9 = 0.5 - 4.5 keV = XID band Note (2): defined as the maximum of the likelihoods of all detections of this source. Note (3): defined as the average of the extent likelihoods of all detections of this source. Note (4): χ2 probability that the unique source as detected by any of the observations is constant, that is, the minimum value of the EPIC probabilities in each detection. Note (5): The summary flag of the source is derived from the EPIC flag, and is assigned the following values: 0 = good: none of the EPIC flags was set. 1 = source parameters may be affected: at least one of the EPIC warning flags was set, but no possible-spurious detection flag is set. 2 = possibly spurious source: at least one of the possible-spurious detection flags was set but not the manual flag 3 = source located in a area where spurious detection may occur. 4 = source located in a area where spurious detection may occur and is possibly spurious. Note (6): addition and last modification of source: the flags indicate in which catalogue in the 2XMM catalogue series (starting from 2XMM) this unique source first appeared (f1) or was last modified (fu). The flag is 1 for 2XMM (IX/39), 2 for 2XMMi (IX/40) and 3 for the present 2XMMi-DR3 catalogue (IX/41). Note (7): This flag (1=true, 0=false) signifies that the 3-σ error circle of a detection within this unique source overlaps the 3-σ error circle of a nearby unique source. As such, it is an indicator of possible confusion (uncertainty) about the assignment of detections between sources. Note (8): The IAU identification, defined from the average corrected position, is of the form "2XMM JHHMMSS.s+DDMMSS" or "2XMMi JHHMMSS.s+DDMMSS"; see the "Nomenclature Notes" section above.
History: From http://xmmssc-www.star.le.ac.uk/Catalogue/xcat_public_2XMMi-DR3.html
(End) Francois Ochsenbein [CDS] 04-May-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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