J/MNRAS/382/279 XMM-LSS catalogue. Version I. (Pierre+, 2007)
The XMM-LSS catalogue:
X-ray sources and associated optical data. Version I.
Pierre M., Chiappetti L., Pacaud F., Gueguen A., Libbrecht C., Altieri B.,
Aussel H., Gandhi P., Garcet O., Gosset E., Paioro L., Ponman T.J.,
Read A.M., Refregier A., Starck J.-L., Surdej J., Valtchanov I., Adami C.,
Alloin D., Alshino A., Andreon S., Birkinshaw M., Bremer M., Detal A.,
Duc P.-A., Galaz G., Jones L., Le Fevre J.-P., Le Fevre O., Maccagni D.,
Mazure A., Quintana H., Rottgering H.J.A., Sprimont P.-G., Tasse C.,
Trinchieri G., Willis J.P.
<Mon. Not. R. Astron. Soc. 382, 279 (2007)>
=2007MNRAS.382..279P 2007MNRAS.382..279P
ADC_Keywords: Surveys ; Clusters, galaxy ; X-ray sources
Mission_Name: XMM
Keywords: catalogues - surveys - X-ray: general
Description:
We provide the source list for the first 5.5 surveyed square degrees
of the XMM-LSS, with a total of 3385 point-like or extended sources
above a detection likelihood of 15 in either 0.5-2 or 2-10keV bands.
The table at CDS contains the main parameters, while further
parameters and data products (X-ray images and optical thumbnails) are
available in the Milan XMM-LSS database site.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
xlss.dat 291 3385 The catalogue
--------------------------------------------------------------------------------
See also:
B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002)
J/ApJ/591/640 : XMM-LSS low-frequency radio counterparts (Cohen+, 2003)
J/A+A/439/413 : XMDS/VVDS 4σ catalogue (Chiappetti+, 2005)
J/A+A/456/791 : XMM-LSS field at 74 and 325MHz (Tasse+, 2006)
J/A+A/471/1105 : XMM-LSS at 240MHz and 610MHz (Tasse+, 2007)
J/A+A/474/473 : XMM-LSS survey: AGN classifications (Garcet+, 2007)
Byte-by-byte Description of file: xlss.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- XSeq *Internal sequence identifier
7- 10 A4 --- --- [XLSS]
12- 28 A17 --- XLSS *Catalog name of the object
(JHHMMSS.s+DDMMSSa)
30- 31 I2 h RAh X-ray Right ascension (J2000)
33- 34 I2 min RAm X-ray Right ascension (J2000)
36- 39 F4.1 s RAs X-ray Right ascension (J2000)
41 A1 --- DE- X-ray Declination sign (J2000)
42- 43 I2 deg DEd X-ray Declination (J2000)
45- 46 I2 arcmin DEm X-ray Declination (J2000)
48- 51 F4.1 arcsec DEs X-ray Declination (J2000)
53- 56 I4 --- BSeq *? Identifier in 0.5-2keV band
58- 62 A5 --- --- [XLSSB]
64- 79 A16 --- XLSSB ? Alternate name in 0.5-2keV band
(JHHMMSS.s+DDMMSS)
81 I1 --- Bc1c2 *? [0-2] 0.5-2keV extended source class
83- 88 F6.2 arcsec Bcorerad ? 0.5-2keV Core radius for extended sources
90-101 F12.5 --- Bextlike *? 0.5-2keV Extension likelihood
103-114 F12.5 --- Bdetlike ? 0.5-2keV Detection likelihood
116-120 F5.2 arcmin Boffaxis ? 0.5-2keV Off-axis angle
122-123 I2 h BRAh *? 0.5-2keV Right ascension (J2000)
125-126 I2 min BRAm ? 0.5-2keV Right ascension (J2000)
128-131 F4.1 s BRAs ? 0.5-2keV Right ascension (J2000)
133 A1 --- BDE- 0.5-2keV Declination sign (J2000)
134-135 I2 deg BDEd ? 0.5-2keV Declination (J2000)
137-138 I2 arcmin BDEm ? 0.5-2keV Declination (J2000)
140-143 F4.1 arcsec BDEs ? 0.5-2keV Declination (J2000)
145-147 F3.1 arcsec eBpos *? Position error in 0.5-2keV band
149-155 F7.4 ct/s Bratemos ? 0.5-2keV MOS count rate
157-163 F7.4 ct/s Bratepn ? 0.5-2keV pn count rate
165-169 F5.1 aW/m2 Bflux *? 0.5-2keV Flux in 0.5-2keV band
171 I1 --- f_Bflux *[0-2]? 0.5-2keV Flux difference flag
174-177 I4 --- CDSeq *? Identifier in 2-10keV band
179-184 A6 --- --- [XLSSCD]
186-201 A16 --- XLSSCD ? Alternate name in 2-10keV band
(JHHMMSS.s+DDMMSS)
203-208 F6.2 arcsec CDcorerad *? 2-10keV Core radius for extended sources
210-221 F12.5 --- CDextlike *? 2-10keV Extension likelihood
223-234 F12.5 --- CDdetlike *? 2-10keV Detection likelihood
236-240 F5.2 arcmin CDoffaxis ? 2-10keV Off-axis angle
242-243 I2 h CDRAh *? 2-10keV Right ascension (J2000)
245-246 I2 min CDRAm ? 2-10keV Right ascension (J2000)
248-251 F4.1 s CDRAs ? 2-10keV Right ascension (J2000)
253 A1 --- CDDE- 2-10keV Declination sign (J2000)
254-255 I2 deg CDDEd ? 2-10keV Declination (J2000)
257-258 I2 arcmin CDDEm ? 2-10keV Declination (J2000)
260-263 F4.1 arcsec CDDEs ? 2-10keV Declination (J2000)
265-267 F3.1 arcsec eCDpos *? Position error in 2-10keV band
269-275 F7.4 ct/s CDratemos ? 2-10keV MOS count rate
277-283 F7.4 ct/s CDratepn ? 2-10keV pn count rate
285-289 F5.1 aW/m2 CDflux *? 2-10keV Flux in 2-10keV band
291 I1 --- f_CDflux *[0-2]? 2-10keV Flux difference flag
--------------------------------------------------------------------------------
Note on XSeq:
This note applies to all merged band columns from XSeq to DEs. Columns
whose label begins with X refer to band-merged X-ray properties and
are always present for all records.
Note on XLSS:
In a very few cases the IAU standard catalogue name has an a/b suffix
after the coordinate designation. This occurs when the band merging is
ambiguous and one 0.5-2keV band source may have two different hard
band counterparts, or viceversa.
Note on BSeq, CDSeq:
If a source was not detected in the band, all these columns are blank.
Note on Bc1c2:
The C1/C2 classification flag is set for candidate clusters according
to Pacaud et al. (2006MNRAS.372..578P 2006MNRAS.372..578P) and assumes the following values:
1 = object classified as C1 cluster candidate in the 0.5-2keV band
2 = object classified as C2 cluster candidate in the 0.5-2keV band
0 = undefined in any other case
Note on Bextlike, CDextlike:
The extension likelihood has value -99999.00000 for pointlike sources
Note on BRAh, CDRAh:
This note applies to all 0.5-2keV and 2-10keV band columns. The
coordinates and count rates, and associated position error and flux
in a band are relevant to the pointlike or extended fit according to
the classification of the source
Note on eBpos, eCDpos:
The position error is computed from the count rate and off axis angle
according to prescriptions given in the paper.
For extended sources it is set to 0.0
Note on Bflux, CDflux: in 10-15erg/cm2/s.
The flux is set to -1.0 when undefined for any reason (in particular
it is set to undefined for all C1 clusters)
Note on f_Bflux, f_CDflux:
The flux flag indicates how the fluxes computed from MOS or pn rates
alone differ from the mean flux, with the following coding:
0 = difference < 20%
1 = difference between 20 and 50%
2 = difference > 50%
Note on CDcorerad:
The hard band core radius can assume value -1 when the extended source
fit fails in the hard band.
Note on CDdetlike:
The hard band detection likelihood can assume value -99999.00000 when
the source is not considered extended in the hard band.
--------------------------------------------------------------------------------
Acknowledgements:
Lucio Chiappetti, lucio(at)lambrate.inaf.it
References:
Pacaud et al., 2006MNRAS.372..578P 2006MNRAS.372..578P XMM-LSS survey
(End) Lucio Chiappetti [IASF Milano], Patricia Vannier [DS] 26-Oct-2007