J/ApJS/195/10 The CDF-S survey: 4Ms source catalogs (Xue+, 2011)
The Chandra Deep Field-South survey: 4 Ms source catalogs.
Xue Y.Q., Luo B., Brandt W.N., Bauer F.E., Lehmer B.D., Broos P.S.,
Schneider D.P., Alexander D.M., Brusa M., Comastri A., Fabian A.C.,
Gilli R., Hasinger G., Hornschemeier A.E., Koekemoer A., Liu T.,
Mainieri V., Paolillo M., Rafferty D.A., Rosati P., Shemmer O.,
Silverman J.D., Smail I., Tozzi P., Vignali C.
<Astrophys. J. Suppl. Ser., 195, 10 (2011)>
=2011ApJS..195...10X 2011ApJS..195...10X
ADC_Keywords: Cross identifications ; X-ray sources ; Surveys ; Redshifts ;
Magnitudes
Keywords: cosmology: observations - diffuse radiation - galaxies: active -
surveys - X-rays: galaxies
Abstract:
We present source catalogs for the 4Ms Chandra Deep Field-South
(CDF-S), which is the deepest Chandra survey to date and covers an
area of 464.5arcmin2. We provide a main Chandra source catalog,
which contains 740 X-ray sources that are detected with wavdetect at a
false-positive probability threshold of 10-5 in at least one of
three X-ray bands (0.5-8keV, full band; 0.5-2keV, soft band; and
2-8keV, hard band) and also satisfy a binomial-probability
source-selection criterion of P<0.004 (i.e., the probability of
sources not being real is less than 0.004); this approach is designed
to maximize the number of reliable sources detected. A total of 300
main-catalog sources are new compared to the previous 2Ms CDF-S
main-catalog sources. We determine X-ray source positions using
centroid and matched-filter techniques and obtain a median positional
uncertainty of ∼0.42". We also provide a supplementary catalog, which
consists of 36 sources that are detected with wavdetect at a
false-positive probability threshold of 10-5, satisfy the condition
of 0.004<P<0.1, and have an optical counterpart with R<24.
Multiwavelength identifications, basic optical/infrared/radio
photometry, and spectroscopic/photometric redshifts are provided for
the X-ray sources in the main and supplementary catalogs. Seven
hundred sixteen (∼97%) of the 740 main-catalog sources have
multiwavelength counterparts, with 673 (∼94% of 716) having either
spectroscopic or photometric redshifts. Basic analyses of the X-ray
and multiwavelength properties of the sources indicate that >75% of
the main-catalog sources are active galactic nuclei (AGNs); of the 300
new main-catalog sources, about 35% are likely normal and starburst
galaxies, reflecting the rise of normal and starburst galaxies at the
very faint flux levels uniquely accessible to the 4Ms CDF-S.
Description:
The 4Ms CDF-S consists of 54 observations, with the first 2Ms
exposure composed of 23 observations (taken between 1999 October 14
and 2000 December 23 and detailed in Luo et al., 2008, Cat.
J/ApJS/179/19) and the second 2Ms exposure composed of 31
observations (taken between 2010 March 18 and 2010 July 22).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 640 740 Main Chandra catalog
table6.dat 640 36 Supplementary Chandra catalog
--------------------------------------------------------------------------------
See also:
B/chandra : The Chandra Archive Log (CXC, 1999-)
II/261 : GOODS initial results (Giavalisco+, 2004)
J/ApJ/727/1 : IRAC/MUSYC SIMPLE survey (Damen+, 2011)
J/ApJS/187/560 : Photometric redshifts of the 2Ms CDF-S (Luo+, 2010)
J/A+A/512/A12 : VLT/VIMOS spectroscopy in GOODS-South field (Balestra+, 2010)
J/ApJS/191/124 : Optical spectroscopy of ECDS-S X-ray sources (Silverman+,
2010)
J/A+A/511/A50 : JHks of GOODS-South field (Retzlaff+, 2010)
J/A+A/504/751 : GOODS-MUSIC catalog updated version (Santini+, 2009)
J/ApJ/693/1713 : Spectroscopy of X-ray sources in ECDF-S (Treister+, 2009)
J/ApJS/183/295 : A K-selected catalog of the ECDFS from MUSYC (Taylor+, 2009)
J/ApJ/681/1163 : Late-type galaxies in Chandra deep fields (Lehmer+, 2008)
J/A+A/478/83 : GOODS-South Field VLT/FORS2 redshifts. III. (Vanzella+, 2008)
J/ApJS/179/19 : CDFS survey: 2 Ms source catalogs (Luo+, 2008)
J/ApJS/179/114 : VLA 1.4GHz survey of E-CDF-S (Miller+, 2008)
J/A+A/465/1099 : Redshift catalog of 691 objects in CDFS (Ravikumar+, 2007)
J/A+A/449/951 : GOODS-MUSIC sample: multicolour catalog (Grazian+, 2006)
J/A+A/441/905 : UBVRI from the Garching-Bonn Deep Survey (Hildebrandt+, 2005)
J/A+A/437/883 : K20 survey: spectroscopic catalogue (Mignoli+, 2005)
J/ApJS/161/21 : Extended Chandra Deep Field-South survey (Lehmer+, 2005)
J/ApJS/155/73 : Photometric redshifts of X-ray sources in CDF-S (Zheng+, 2004)
J/ApJS/155/271 : Chandra Deep Field-South: Optical spectroscopy (Szokoly+,
2004)
J/A+A/428/1043 : Redshifts from VIMOS VLT Deep Survey (Le Fevre+, 2004)
http://cxc.harvard.edu/cda/Contrib/CDFS.html : Chandra X-ray Center (CXC)
CDFS dataset page
Byte-by-byte Description of file: table[36].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- ID Source identification
(<[XLB2011] JHHMMSS.ss+DDMMSS.s> in Simbad)
5 I1 h RAh Hour of Right Ascension (J2000)
7- 8 I2 min RAm Minute of Right Ascension (J2000)
10- 14 F5.2 s RAs Second of Right Ascension (J2000)
16 A1 --- DE- Sign of the Declination (J2000)
17- 18 I2 deg DEd Degree of Declination (J2000)
20- 21 I2 arcmin DEm Arcminute of Declination (J2000)
23- 26 F4.1 arcsec DEs Arcsecond of Declination (J2000)
28- 32 F5.1 [-] log(P) ?=-99 Logarithm of binomial no-source
probability (1)
34- 35 I2 [-] log(Pm) Logarithm of minimum false-positive probability
37- 39 F3.1 arcsec ePos Positional error
41- 45 F5.2 arcmin OffAng Off-axis angle
47- 54 F8.2 ct Fcts Full-band counts at 0.5-8keV (2)
56- 61 F6.2 ct E_Fcts ?=-1 Upper error in Fcts (2)
63- 68 F6.2 ct e_Fcts ?=-1 Lower error in Fcts (2)
70- 77 F8.2 ct Scts Soft-band counts at 0.5-2keV (2)
79- 84 F6.2 ct E_Scts ?=-1 Upper error in Scts (2)
86- 91 F6.2 ct e_Scts ?=-1 Lower error in Scts (2)
93-100 F8.2 ct Hcts Hard-band counts at 2-8keV (2)
102-107 F6.2 ct E_Hcts ?=-1 Upper error in Hcts (2)
109-114 F6.2 ct e_Hcts ?=-1 Lower error in Hcts (2)
116 I1 --- Fext [0/2] flag for evidence for spatial extent (3)
118 I1 h RACh ?=- Optical/NIR/radio (ONIR) counterpart hour of
Right Ascension (J2000)
120-121 I2 min RACm ?=- ONIR counterpart minute of RA (J2000)
123-127 F5.2 s RACs ?=- ONIR counterpart second of RA (J2000)
129 A1 --- DEC- Sign of the Optical/NIR/radio counterpart
Declination (J2000)
130-131 I2 deg DECd ?=- ONIR counterpart degree of DE (J2000)
133-134 I2 arcmin DECm ?=- ONIR counterpart arcminute of DE (J2000)
136-139 F4.1 arcsec DECs ?=- ONIR counterpart arcsecond of DE (J2000)
141-145 F5.2 arcsec C-off ?=-1 Offset between optical/NIR/radio
and X-ray positions
147-151 F5.2 mag Cmag ?=-1 AB magnitude of ONIR counterpart
153-159 A7 --- Ccat Catalog id of optical/NIR/radio counterpart (4)
161 I1 h RAWh ?=- WFI R-band Hour of Right Ascension (J2000)
163-164 I2 min RAWm ?=- WFI R-band Minute of Right Ascension (J2000)
166-170 F5.2 s RAWs ?=- WFI R-band Second of Right Ascension (J2000)
172 A1 --- DEW- Sign of WFI R-band Declination (J2000)
173-174 I2 deg DEWd ?=- WFI R-band Degree of Declination (J2000)
176-177 I2 arcmin DEWm ?=- WFI R-band Arcminute of Declination (J2000)
179-182 F4.1 arcsec DEWs ?=- WFI R-band Arcsecond of Declination (J2000)
184-188 F5.2 mag Wmag ?=-1 AB magnitude of WFI R-band counterpart
190 I1 h RAGDh ?=- GOODS-S z-band Hour of Right Ascension
(J2000)
192-193 I2 min RAGDm ?=- GOODS-S z-band Minute of RA (J2000)
195-199 F5.2 s RAGDs ?=- GOODS-S z-band Second of RA (J2000)
201 A1 --- DEGD- Sign of GOODS-S z-band Declination (J2000)
202-203 I2 deg DEGDd ?=- GOODS-S z-band Degree of Declination (J2000)
205-206 I2 arcmin DEGDm ?=- GOODS-S z-band Arcminute of DE (J2000)
208-211 F4.1 arcsec DEGDs ?=- GOODS-S z-band Arcsecond of DE (J2000)
213-217 F5.2 mag GDmag ?=-1 AB magnitude of GOODS-S z-band counterpart
219 I1 h RAGh ?=- GEMS z-band Hour of Right Ascension (J2000)
221-222 I2 min RAGm ?=- GEMS z-band Minute of RA (J2000)
224-228 F5.2 s RAGs ?=- GEMS z-band Second of RA (J2000)
230 A1 --- DEG- Sign of GEMS z-band Declination (J2000)
231-232 I2 deg DEGd ?=- GEMS z-band Degree of Declination (J2000)
234-235 I2 arcmin DEGm ?=- GEMS z-band Arcminute of Declination (J2000)
237-240 F4.1 arcsec DEGs ?=- GEMS z-band Arcsecond of Declination (J2000)
242-246 F5.2 mag Gmag ?=-1 AB magnitude of GEMS z-band counterpart
248 I1 h RAMh ?=- MUSIC K-band Hour of Right Ascension (J2000)
250-251 I2 min RAMm ?=- MUSIC K-band Minute of RA (J2000)
253-257 F5.2 s RAMs ?=- MUSIC K-band Second of RA (J2000)
259 A1 --- DEM- Sign of MUSIC K-band Declination (J2000)
260-261 I2 deg DEMd ?=- MUSIC K-band Degree of Declination (J2000)
263-264 I2 arcmin DEMm ?=- MUSIC K-band Arcminute of DE (J2000)
266-269 F4.1 arcsec DEMs ?=- MUSIC K-band Arcsecond of DE (J2000)
271-275 F5.2 mag Mmag ?=-1 AB magnitude of MUSIC K-band counterpart
277 I1 h RAMYh ?=- MUSYC K-band Hour of Right Ascension (J2000)
279-280 I2 min RAMYm ?=- MUSYC K-band Minute of RA (J2000)
282-286 F5.2 s RAMYs ?=- MUSYC K-band Second of RA (J2000)
288 A1 --- DEMY- Sign of MUSYC K-band Declination (J2000)
289-290 I2 deg DEMYd ?=- MUSYC K-band Degree of Declination (J2000)
292-293 I2 arcmin DEMYm ?=- MUSYC K-band Arcminute of DE (J2000)
295-298 F4.1 arcsec DEMYs ?=- MUSYC K-band Arcsecond of DE (J2000)
300-304 F5.2 mag MYmag ?=-1 AB magnitude of MUSYC K-band counterpart
306 I1 h RASh ?=- SIMPLE 3.6 micron Hour of
Right Ascension (J2000)
308-309 I2 min RASm ?=- SIMPLE 3.6 micron Minute of RA (J2000)
311-315 F5.2 s RASs ?=- SIMPLE 3.6 micron Second of RA (J2000)
317 A1 --- DES- Sign of SIMPLE 3.6 micron Declination (J2000)
318-319 I2 deg DESd ?=- SIMPLE 3.6 micron Degree of DE (J2000)
321-322 I2 arcmin DESm ?=- SIMPLE 3.6 micron Arcminute of DE (J2000)
324-327 F4.1 arcsec DESs ?=- SIMPLE 3.6 micron Arcsecond of DE (J2000)
329-333 F5.2 mag Smag ?=-1 AB magnitude of SIMPLE 3.6 micron
counterpart
335 I1 h RAVh ?=- VLA 1.4GHz Hour of Right Ascension (J2000)
337-338 I2 min RAVm ?=- VLA 1.4GHz Minute of Right Ascension (J2000)
340-344 F5.2 s RAVs ?=- VLA 1.4GHz Second of Right Ascension (J2000)
346 A1 --- DEV- Sign of VLA 1.4GHz Declination (J2000)
347-348 I2 deg DEVd ?=- VLA 1.4GHz Degree of Declination (J2000)
350-351 I2 arcmin DEVm ?=- VLA 1.4GHz Arcminute of Declination (J2000)
353-356 F4.1 arcsec DEVs ?=- VLA 1.4GHz Arcsecond of Declination (J2000)
358-362 F5.2 mag Vmag ?=-1 AB magnitude of VLA 1.4GHz counterpart
364-369 F6.3 --- zsp ?=-1 Spectroscopic redshift
371-378 A8 --- q_zsp Quality flag on zsp (secure, insecure, none) (5)
380-381 I2 --- r_zsp ?=-1 Reference of spectroscopic redshift (6)
383-388 F6.3 --- zphl ?=-1 Luo et al. 2010, Cat. J/ApJS/187/560
photometric redshift
390-395 F6.3 --- b_zphl ?=-1 Lower limit on zphl
397-402 F6.3 --- B_zphl ?=-1 Upper limit on zphl
404-409 F6.3 --- zphla ?=-1 Alternative Luo et al. 2010 photometric
redshift
411-416 F6.3 --- zphc ?=-1 Cardamone et al. 2010ApJS..189..270C 2010ApJS..189..270C
photometric redshift
418-423 F6.3 --- b_zphc ?=-1 Lower limit on zphc
425-430 F6.3 --- B_zphc ?=-1 Upper limit on zphc
432-437 F6.3 --- q_zphc Quality flag on zphc
439-444 F6.3 --- zphr ?=-1 Rafferty et al. 2011 (ApJ, submitted)
photometric redshift
446-451 F6.3 --- b_zphr ?=-1 Lower limit on zphr
453-458 F6.3 --- B_zphr ?=-1 Upper limit on zphr
460-465 F6.3 --- zadopt ?=-1 Preferred redshift adopted in this paper
467-472 A6 --- L8 L08 CDFS source identification (7)
474 I1 h RAL8h ?=- L08 CDFS Hour of Right Ascension (J2000)
476-477 I2 min RAL8m ?=- L08 CDFS Minute of Right Ascension (J2000)
479-483 F5.2 s RAL8s ?=- L08 CDFS Second of Right Ascension (J2000)
485 A1 --- DEL8- Sign of the L08 CDFS Declination (J2000)
486-487 I2 deg DEL8d ?=- L08 CDFS Degree of Declination (J2000)
489-490 I2 arcmin DEL8m ?=- L08 CDFS Arcminute of Declination (J2000)
492-495 F4.1 arcsec DEL8s ?=- L08 CDFS Arcsecond of Declination (J2000)
497-502 A6 --- L5 L05 ECDFS source identification (8)
504 I1 h RAL5h ?=- L05 ECDFS Hour of Right Ascension (J2000)
506-507 I2 min RAL5m ?=- L05 ECDFS Minute of Right Ascension (J2000)
509-513 F5.2 s RAL5s ?=- L05 ECDFS Second of Right Ascension (J2000)
515 A1 --- DEL5- Sign of the L05 ECDFS Declination (J2000)
516-517 I2 deg DEL5d ?=- L05 ECDFS Degree of Declination (J2000)
519-520 I2 arcmin DEL5m ?=- L05 ECDFS Arcminute of Declination (J2000)
522-525 F4.1 arcsec DEL5s ?=- L05 ECDFS Arcsecond of Declination (J2000)
527-535 F9.1 s FExp Full-band effective exposure time
537-545 F9.1 s SExp Soft-band effective exposure time
547-555 F9.1 s HExp Hard-band effective exposure time
557-561 F5.2 --- BRat ?=-1 Band ratio (HB/SB) (9)
563-567 F5.2 --- E_BRat ?=-1 Upper error on BRat (9)
569-573 F5.2 --- e_BRat ?=-1 Lower error on BRat (9)
575-579 F5.2 --- PInd Photon index Γ (10)
581-585 F5.2 --- EPInd Upper error on PInd (10)
587-591 F5.2 --- ePInd Lower error on PInd (10)
593-601 E9.2 mW/m2 FFlux Full-band flux in units of erg/s/cm^2 (11)
603-611 E9.2 mW/m2 SFlux Soft-band flux in units of erg/s/cm^2 (11)
613-621 E9.2 mW/m2 HFlux Hard-band flux in units of erg/s/cm^2 (11)
623-631 E9.2 10-7W Lx ?=-1 Absorption-corrected, rest-frame 0.5-8keV
luminosity; erg/s (12)
633-638 A6 --- OType Object type (AGN, Star or Galaxy)
640 A1 --- Notes Additional notes (13)
--------------------------------------------------------------------------------
Note (1): Sources with P=0 have log(P) values set to -99.0.
Note (2): Sources not detected in a given band have the errors set to
-1.00. The corresponding counts are upper limits.
Note (3): Sources with Fext=2 have probKS≤0.01.
Sources with Fext=1 have 0.01<probKS≤0.05.
Sources with Fext=0 have probKS>0.05.
probKS is the probability that the source and PSF images
are consistent.
Note (4): We used seven ONIR catalogs for identification purposes as follows:
VLA = The VLA 1.4GHz radio catalog (Miller et al. 2008,
Cat. J/ApJS/179/114), with a 5σ limiting flux density of
∼40uJy.
WFI = The ESO 2.2m WFI R-band catalog (Giavalisco et al. 2004,
Cat. II/261), with a 5σ limiting AB magnitude (Oke & Gunn,
1983ApJ...266..713O 1983ApJ...266..713O) of 27.3.
GEMS = The GEMS HST z-band catalog (Caldwell et al. 2008ApJS..174..136C 2008ApJS..174..136C),
with a 5σ limiting AB magnitude of 27.3.
MUSIC = The GOODS-S MUSIC catalog (Grazian et al. 2006, Cat. J/A+A/449/951;
we used the K-selected sources in the V2 catalog that was presented
in Santini et al. 2009, Cat. J/A+A/504/751) based on the Retzlaff et
al. (2010, Cat. J/A+A/511/A50) Very Large Telescope/ISAAC data, with
a limiting K-band AB magnitude of 23.8 (at 90% completeness).
MUSYC = The MUSYC K-band catalog (Taylor et al. 2009, Cat. J/ApJS/183/295),
with a 5σ limiting AB magnitude of 22.4.
SIMPLE = The SIMPLE Spitzer/IRAC 3.6um catalog (Damen et al. 2011,
Cat. J/ApJ/727/1), with a 5σ limiting AB magnitude of 23.8.
GOODS-S = The GOODS-S Hubble Space Telescope (HST) version r2.0z z-band
catalog (Giavalisco et al. 2004, Cat. II/261), with a 5σ
limiting AB magnitude of 28.2.
Note (5): Sources with no spectroscopic redshifts have these values set
to 'None'.
Note (6): Reference as follows:
1 = Le Fevre et al. (2004, Cat. J/A+A/428/1043);
2 = Szokoly et al. (2004, Cat. J/ApJS/155/271);
3 = Zheng et al. (2004, Cat. J/ApJS/155/73);
4 = Mignoli et al. (2005, Cat. J/A+A/437/883);
5 = Ravikumar et al. (2007, Cat. J/A+A/465/1099);
6 = Vanzella et al. (2008, Cat. J/A+A/478/83);
7 = Popesso et al. (2009A&A...494..443P 2009A&A...494..443P);
8 = Treister et al. (2009, Cat. J/ApJ/693/1713);
9 = Balestra et al. (2010, Cat. J/A+A/512/A12);
10 = Silverman et al. (2010, Cat. J/ApJS/191/124);
Note (7): Sources that were not previously detected in the L08 (Lehmer+, 2008,
Cat. J/ApJ/681/1163) catalogs have these values set to "0" or "-1".
Note (8): Sources that were not previously detected in the L05 (Lehmer+, 2005,
Cat. J/ApJS/161/21) catalogs have these values set to "0".
Note (9): Sources only detected in the full band (0.5-8keV) have these values
set to -1.00. Sources with only limits on the band ratio have the
errors set to the computed band ratio.
Note (10): Sources with low numbers of counts have photon indices set to
1.40 and errors set to 0.00. Sources with only limits on the photon
index have the errors set to the computed photon index.
Note (11): A negative value indicates an upper limit.
Note (12): Sources with no redshift estimates have these values set to -1.000;
Negative luminosity values other than -1.000 indicate upper limits.
Note (13): Flag as follows:
E = sources at the edge that lie partially outside of the survey area.
C = close doubles or triples.
- = no special notes.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 19-Sep-2011