IX/44 XMM-Newton Serendipitous Source Catalogue 3XMM-DR4 (XMM-SSC, 2013)
XMM-Newton Serendipitous Source Catalogue 3XMM-DR4
XMM-Newton Survey Science Centre Consortium
<XMM-SSC, Leicester, UK (2013)>
=2013yCat.9044....0X 2013yCat.9044....0X
ADC_Keywords: X-ray sources ; Surveys
Mission_Name: XMM
Description:
The 3XMM-DR4 catalogue is the third generation catalog of
serendipitous X-ray sources from the European Space Agency's (ESA)
XMM-Newton observatory, and has been created by the XMM-Newton Survey
Science Centre (SSC) on behalf of ESA. The catalog has 2474 more
observations and about 178,000 (50%) more detections than the
preceding 2XMMi-DR3 catalog, which was made public in April 2010.
The history of the versions can be summarized as:
----------------------------------------------------
Name DR# Designation Year Cat. #Sources
----------------------------------------------------
2XMMp 0 2XMMp-DR0 2006
2XMM 1 2XMM-DR1 2007 IX/39 191870
2XMMi 2 2XMMi-DR2 2008 IX/40 221012
2XMMi-DR3 3 2XMMi-DR3 2010 IX/41 262902
3XMM-DR4 4 3XMM 2013 IX/44 372728
----------------------------------------------------
The production and content of the 3XMM catalogue is described in the
the 3XMM-DR4 User Guide at
http://xmmssc-www.star.le.ac.uk/Catalogue/3XMM-DR4/UserGuide_xmmcat.html
The "slim" version of the catalogue (file "xmm3r4s.dat") contains one
row per unique source, while the the main catalogue has one row per
detection. This slim version includes 44 columns, essentially those
containing information about the unique sources, while the full
catalogue (file "xmm3r4.fit") describes all detections with
318 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.
A separate file "summary.dat" contains the key details about the
observations used in the construction of the 3XMM-DR4 catalogue.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
xmm3r4s.dat 485 372728 The 3XMM-DR4 Catalog, "slim" version
summary.dat 137 7427 List of observations
xmm3r4.fit 2880 265840 Full 3XMM-DR4 Catalog (531261 detections)
--------------------------------------------------------------------------------
See also:
http://xmmssc-www.star.le.ac.uk/Catalogue : XMM-Newton Home Page
http://xmmssc-www.star.le.ac.uk/Catalogue/xcat_public_3XMM-DR4.html :
3XMM Home Page
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)
B/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center)
Byte-by-byte Description of file: xmm3r4s.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- Source [1/372728] (SRCID) Unique source index
8- 11 A4 --- --- [3XMM]
13- 28 A16 --- 3XMM (IAUNAME) Unique source name (JHHMMSS.s+DDMMSS)
30- 38 F9.5 deg RAdeg (SC_RA) Mean source right ascension (ICRS)
40- 48 F9.5 deg DEdeg (SC_DEC) Mean source declination (ICRS)
50- 54 F5.2 arcsec ePos [0.03/20] (SC_POSERR) Mean error on position
56- 64 E9.3 --- srcML (SCDETML) Source detection likelihood (2)
66- 76 E11.5 mW/m2 Flux1 (SCEP1_FLUX) Mean flux in 0.2-0.5keV band
78- 86 E9.3 mW/m2 e_Flux1 (SCEP1FLUXERR) Mean error on Flux1
88- 98 E11.5 mW/m2 Flux2 (SCEP2_FLUX) Mean flux in 0.5-1.0keV band
100-108 E9.3 mW/m2 e_Flux2 (SCEP2FLUXERR) Mean error on Flux2
110-120 E11.5 mW/m2 Flux3 (SCEP3_FLUX) Mean flux in 1.0-2.0keV band
122-130 E9.3 mW/m2 e_Flux3 (SCEP3FLUXERR) Mean error on Flux3
132-142 E11.5 mW/m2 Flux4 (SCEP4_FLUX) Mean flux in 2.0-4.5keV band
144-152 E9.3 mW/m2 e_Flux4 (SCEP4FLUXERR) Mean error on Flux4
154-164 E11.5 mW/m2 Flux5 (SCEP5_FLUX) Mean flux in 4.5-12keV band
166-174 E9.3 mW/m2 e_Flux5 (SCEP5FLUXERR) Mean error on Flux5
176-186 E11.5 mW/m2 Flux8 (SCEP8_FLUX) Mean flux in 0.2-12keV band
188-196 E9.3 mW/m2 e_Flux8 (SCEP8FLUXERR) Mean error on Flux8
198-208 E11.5 mW/m2 Flux9 ? (SCEP9_FLUX) Mean flux in 0.5-4.5keV band
210-218 E9.3 mW/m2 e_Flux9 ? (SCEP9FLUXERR) Mean error on Flux9
220-230 E11.5 mW/m2 F8min (SCEP8_FMIN) Minimum flux in 0.5-4.5keV band
232-240 E9.3 mW/m2 e_F8min (SCEP8FMINERR) Mean error on F8min
242-252 E11.5 mW/m2 F8max (SCEP8_FMAX) Maximum flux in 0.5-4.5keV band
254-262 E9.3 mW/m2 e_F8max (SCEP8FMAXERR) Mean error on F8max
264-269 F6.3 --- HR1 [-1/1]? (SC_HR1) Hardness ratio, bands 1,2 (1)
271-276 F6.3 --- e_HR1 ? (SCHR1ERR) Mean error on HR1
278-283 F6.3 --- HR2 [-1/1]? (SC_HR2) Hardness ratio, bands 2,3 (1)
285-290 F6.3 --- e_HR2 ? (SCHR2ERR) Mean error on HR2
292-297 F6.3 --- HR3 [-1/1]? (SC_HR3) Hardness ratio, bands 3,4 (1)
299-304 F6.3 --- e_HR3 ? (SCHR3ERR) Mean error on HR3
306-311 F6.3 --- HR4 [-1/1]? (SC_HR4) Hardness ratio, bands 4,5 (1)
313-318 F6.3 --- e_HR4 ? (SCHR4ERR) Mean error on HR4
320-324 F5.1 arcsec ext (SC_EXTENT) Total band extent
326-334 E9.3 --- extML (SCEXTML) Detection likelihood of the
extended source (3)
336-341 F6.3 --- Cst [0/1]? (SC_CHI2PROB) Constant probability (4)
343 I1 --- V [0/1] (SCVARFLAG) Variability flag (V=1)
345 I1 --- S [0/4] (SCSUMFLAG) summary flag, 0=best (5)
347-356 F10.4 d MJD0 [51577/56269] (MJD_FIRST) Date of first
observation (MJD)
358-367 F10.4 d MJD1 [51577/56270] (MJD_LAST) Date of last
observation (MJD)
369-377 E9.3 --- Fvar ? (SC_FVAR) fractional excess variance of
the unique source (6)
379-386 E8.2 --- e_Fvar ? (SC_FVARERR) Mean error on Fvar
388-389 I2 --- Nd [1/44] (N_DETECTIONS) Number of detections
391 I1 --- c [0/1] (CONFUSED) Confusion flag (7)
393-485 A93 --- 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:
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): The fractional excess variance of the unique source. It is the
value corresponding to the exposure and instrument that shows the
lowest probability of being constant.
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.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: summary.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I04 --- Rev [28/2380] (REVOLUT) Satellite revolution number
6- 15 I010 --- ObsID (OBS_ID) XMM Observation number (Cat. B/xmm)
17- 19 I03 --- iODF [1/10] (ODF_VERS) Data File (ODF) number
21- 29 F9.5 deg RAdeg (RA) field Right Ascension (J2000)
31- 39 F9.5 deg DEdeg (DEC) field Declination (J2000)
41- 59 A19 --- Target (TARGET) name
61 I1 --- Q [0/5] (OBS_CLASS) Observations quality (1)
63- 65 I3 --- Nd [2/731] (NDET) Number of detections in field
67- 69 I3 --- Ng [0/391] (NDETGOOD) Number of good detections
in field
71- 73 A3 --- --- [[PN]]
74 I1 --- Np [1/3]? (PN_NEXP) Number of PN exposures merged
75 A1 --- --- []]
77- 79 A3 --- f.PN (PN_FILT) Filter of the PN exposure(s) (2)
81- 84 A4 --- m.PN (PN_MODE) Mode of the PN exposure(s) (3)
86- 91 I6 s t.PN ?=--- (PN_TEXP) Total PN exposure time
93- 95 A3 --- --- [[M1]]
96 I1 --- N1 [1/5]? (M1_NEXP) Number of M1 exposures merged
97 A1 --- --- []]
99-101 A3 --- f.M1 (M1_FILT) Filter of the M1 exposure(s) (2)
103-107 A5 --- m.M1 (M1_MODE) Mode of the M1 exposures (3)
109-114 I6 s t.M1 ?=--- (M1_TEXP) Total M1 exposure time
116-118 A3 --- --- [[M2]]
119 I1 --- N2 [1/5]? (M2_NEXP) Number of M2 exposures merged
120 A1 --- --- []]
122-124 A3 --- f.M2 (M2_FILT) Filter of the M2 exposure(s) (2)
126-130 A5 --- m.M2 (M2_MODE) Mode of the M2 exposures (3)
132-137 I6 s t.M2 ?=--- (M2_TEXP) Total M2 exposure time
--------------------------------------------------------------------------------
Note (1): Quality classification of the whole observation based on the area
flagged as bad in the manual flagging process
Note (2): EPIC camera filters of catalogue observations:
Med=MEDIUM, Tn1=THIN1, Tn2=THIN2, Tck=THICK, Opn=OPEN,
Note (3): MOS modes:
PFW = Prime Full Window
PPW2 = Prime Partial W2
PPW3 = Prime Partial W3
PPW4 = Prime Partial W4
PPW5 = Prime Partial W5
FU = Fast Uncompressed
FC = Fast Compressed
PPRFS = Prime Partial Refreshed Frame Store
--------------------------------------------------------------------------------
History:
From http://xmmssc-www.star.le.ac.uk/Catalogue/xcat_public_3XMM-DR4.html
(End) Francois Ochsenbein [CDS] 10-Oct-2013