J/ApJS/179/19 CDFS survey: 2 Ms source catalogs (Luo+, 2008)
The Chandra Deep Field-South survey: 2 Ms source catalogs.
Luo B., Bauer F.E., Brandt W.N., Alexander D.M., Lehmer B.D.,
Schneider D.P., Brusa M., Comastri A., Fabian A.C., Finoguenov A.,
Gilli R., Hasinger G., Hornschemeier A.E., Koekemoer A., Mainieri V.,
Paolillo M., Rosati P., Shemmer O., Silverman J.D., Smail I., Steffen A.T.,
Vignali C.
<Astrophys. J. Suppl. Ser., 179, 19-36 (2008)>
=2008ApJS..179...19L 2008ApJS..179...19L
ADC_Keywords: Cross identifications ; X-ray sources ; Photometry
Active gal. nuclei ; Galaxies, optical ; Surveys
Keywords: cosmology: observations - diffuse radiation - galaxies: active
surveys - X-rays: galaxies
Abstract:
We present point-source catalogs for the ∼2Ms exposure of the Chandra
Deep Field-South (CDF-S) this is one of the two most sensitive X-ray
surveys ever performed. The survey covers an area of ∼436arcmin2
and reaches on-axis sensitivity limits of ∼1.9x10-17 and
∼1.3x10-16ergs/cm2/s for the 0.5-2.0 and 2-8keV bands,
respectively. Four hundred and sixty-two X-ray point sources are
detected in at least one of three X-ray bands that were searched;
135 of these sources are new compared to the previous ∼1Ms CDF-S
detections. Source positions are determined using centroid and
matched-filter techniques; the median positional uncertainty is
∼0.36". The X-ray-to-optical flux ratios of the newly detected sources
indicate a variety of source types; ∼55% of them appear to be active
galactic nuclei, while ∼45% appear to be starburst and normal
galaxies. In addition to the main Chandra catalog, we provide a
supplementary catalog of 86 X-ray sources in the ∼2Ms CDF-S footprint
that was created by merging the ∼250ks Extended Chandra Deep
Field-South with the CDF-S this approach provides additional
sensitivity in the outer portions of the CDF-S. A second supplementary
catalog that contains 30 X-ray sources was constructed by matching
lower significance X-ray sources to bright optical counterparts
(R<23.8) the majority of these sources appear to be starburst and
normal galaxies. The total number of sources in the main and
supplementary catalogs is 578. Optical R-band counterparts and basic
optical and infrared photometry are provided for the X-ray sources in
the main and supplementary catalogs. We also include existing
spectroscopic redshifts for 224 of the X-ray sources.
Description:
The CDF-S consists of 23 separate observations: The ∼1 Ms catalogs
for the first 11 observations taken between 1999 October 14 and 2000
December 23 were presented in Giacconi et al., 2002 (Cat. J/ApJS/139/369)
and Alexander et al., 2003 (Cat. J/AJ/126/539).The second ∼1 Ms
exposure consisted of 12 observations taken between 2007 September 20
and 2007 November 4.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 458 462 Main Chandra Catalog
table5.dat 458 86 Supplementary CDF-S plus E-CDF-S Chandra Catalog
table6.dat 340 30 Supplementary Optically Bright Chandra Catalog
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See also:
B/chandra : The Chandra Archive Log (CXC, 1999-)
J/ApJS/139/369 : Chandra Deep Field South. 1 Ms catalog (Giacconi+, 2002)
J/AJ/126/539 : The Chandra Deep Fields North and South (Alexander+, 2003)
J/A+A/428/1043 : Redshifts from VIMOS VLT Deep Survey (Le Fevre+, 2004)
J/ApJS/155/271 : Chandra Deep Field-South: Optical spectroscopy
(Szokoly+, 2004)
J/ApJS/161/21 : Extended Chandra Deep Field-South survey (Lehmer+, 2005)
J/A+A/437/883 : K20 survey: spectroscopic catalogue (Mignoli+, 2005)
J/A+A/465/1099 : Redshift catalog of 691 objects in CDFS (Ravikumar+, 2007)
J/A+A/478/83 : GOODS-South Field VLT/FORS2 redshifts. III. (Vanzella+, 2008)
Byte-by-byte Description of file: table[25].dat
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Bytes Format Units Label Explanations
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1 A1 --- S [S] for Supplement sources (table5)
2- 4 I3 --- [LBB2008] Source identification number (1)
6 I1 h RAh Right Ascension (J2000)
8- 9 I2 min RAm Right Ascension (J2000)
11- 15 F5.2 s RAs Right Ascension (J2000)
18 A1 --- DE- Declination Sign (J2000)
19- 20 I2 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 28 F4.1 arcsec DEs Declination (J2000)
30- 32 F3.1 arcsec e_pos Positional error
35- 39 F5.2 arcmin OffAng Off-axis angle
41- 48 F8.2 ct Fcts Full-band (0.5-8keV) counts
50- 55 F6.2 ct E_Fcts ?=-1 Full-band counts upper error (2)
57- 62 F6.2 ct e_Fcts ?=-1 Full-band counts lower error (2)
64- 71 F8.2 ct Scts Soft-band (0.5-2keV) counts
73- 78 F6.2 ct E_Scts ?=-1 Soft-band counts upper error (2)
80- 85 F6.2 ct e_Scts ?=-1 Soft-band counts lower error (2)
87- 94 F8.2 ct Hcts Hard-band (2-8keV) counts
96-101 F6.2 ct E_Hcts ?=-1 Hard-band counts upper error (2)
103-108 F6.2 ct e_Hcts ?=-1 Hard-band counts lower error (2)
110 I1 h RAOh ?=- Optical Right Ascension (J2000)
112-113 I2 min RAOm ?=- Optical Right Ascension (J2000)
115-119 F5.2 s RAOs ?=- Optical Right Ascension (J2000)
122 A1 --- DEO- Optical Declination Sign (J2000)
123-124 I2 deg DEOd ?=- Optical Declination (J2000)
126-127 I2 arcmin DEOm ?=- Optical Declination (J2000)
129-132 F4.1 arcsec DEOs ?=- Optical Declination (J2000)
134-138 F5.2 arcsec OXoff ?=-1 Offset between optical and X-ray
positions
141-145 F5.2 mag Rmag ?=-1 The R band magnitude (WFI)
148-152 I5 --- GOODS ?=-1 GOODS-S CDFS source identification (4)
155-159 F5.2 mag imag ?=-1 The i band magnitude (GOODS-S) (4)
162-184 A23 --- GEMS ?=-1 GEMS CDFS source identification (4)
187-191 F5.2 mag zmag ?=-1 The z band magnitude (GEMS) (4)
195-198 I4 --- SOFI ?=-1 SOFI CDFS source identification (4)
201-205 F5.2 mag Ksmag ?=-1 The K_s band magnitude (SOFI) (4)
208-212 I5 --- IRAC ?=-1 IRAC CDFS source identification (4)
215-222 F8.2 --- F5.8um ?=-1 The 5.8um flux density (IRAC) (4)(5)
225-230 F6.3 --- z ?=-1 Spectroscopic redshift (4)
236-237 I2 --- r_z ?=-1 Reference for the redshift (4)(6)
242-244 I3 --- L05 ? L05 ECDFS source identification (3)
248 I1 h RALh ? L05 ECDFS Right Ascension (J2000)
250-251 I2 min RALm ? L05 ECDFS Right Ascension (J2000)
253-257 F5.2 s RALs ? L05 ECDFS Right Ascension (J2000)
260 A1 --- DEL- ? L05 ECDFS Declination Sign (J2000)
261-262 I2 deg DELd ? L05 ECDFS Declination (J2000)
264-265 I2 arcmin DELm ? L05 ECDFS Declination (J2000)
267-270 F4.1 arcsec DELs ? L05 ECDFS Declination (J2000)
274-276 I3 --- A03 ?=-1 A03 CDFS source identification (3)
280 I1 h RAAh ?=- A03 CDFS Right Ascension (J2000)
282-283 I2 min RAAm ?=- A03 CDFS Right Ascension (J2000)
285-289 F5.2 s RAAs ?=- A03 CDFS Right Ascension (J2000)
292 A1 --- DEA- A03 CDFS Declination Sign (J2000)
293-294 I2 deg DEAd ?=- A03 CDFS Declination (J2000)
296-297 I2 arcmin DEAm ?=- A03 CDFS Declination (J2000)
299-302 F4.1 arcsec DEAs ?=- A03 CDFS Declination (J2000)
306-308 I3 --- G02 ?=-1 G02 CDFS Source identification (3)
312-314 I3 --- G02X ?=-1 G02 CDFS Source unique detection
identification (3)
318 I1 h RAGh ?=- G02 CDFS Right Ascension (J2000)
320-321 I2 min RAGm ?=- G02 CDFS Right Ascension (J2000)
323-327 F5.2 s RAGs ?=- G02 CDFS Right Ascension (J2000)
330 A1 --- DEG- G02 CDFS Declination Sign (J2000)
331-332 I2 deg DEGd ?=- G02 CDFS Declination (J2000)
334-335 I2 arcmin DEGm ?=- G02 CDFS Declination (J2000)
337-340 F4.1 arcsec DEGs ?=- G02 CDFS Declination (J2000)
342-351 F10.2 s FExp Full-band effective exposure time
353-362 F10.2 s SExp Soft-band effective exposure time
364-373 F10.2 s HExp Hard-band effective exposure time
378-382 F5.2 --- H/S ?=-1 Band ratio (Hard/Soft) (7)
385-389 F5.2 --- E_H/S ?=-1 Band ratio upper error (7)
392-396 F5.2 --- e_H/S ?=-1 Band ratio lower error (7)
398-402 F5.2 --- Gamma Photon index (8)
404-408 F5.2 --- E_Gamma ?=-1 Photon index upper error (8)
410-414 F5.2 --- e_Gamma ?=-1 Photon index lower error (8)
416-424 E9.2 mW/m2 FFlux Full-band flux (9)
426-434 E9.2 mW/m2 SFlux Soft-band flux (9)
436-444 E9.2 mW/m2 HFlux Hard-band flux (9)
448-449 I2 --- log(P) Logarithm of the minimum false-positive
probability
456-458 A3 --- Notes Additional notes (10)
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Note (1): [LBB2008] NNN in Simbad for table 2 and [LBB2008] S NN for table 5.
Note (2): Sources not detected in a given band have the errors set to
-1.00. The corresponding counts are upper limits.
Note (3): Catalog references as:
A03 = Alexander et al., 2003, Cat. J/AJ/126/539
G02 = Giacconi et al., 2002, Cat. J/ApJS/139/369
L05 = Lehmer et al., 2005, Cat. J/ApJS/161/21 (for table 5)
Sources with no counterparts have these values set to -1.
Note (4): These were matched to the R-band optical counterparts. Sources
with no matches have these values set to -1.
Note (5): The flux density was normalized to an AB magnitude zero point of 25.
Note (6): Redshift references as follows:
2 = 2004A&A...428.1043L 2004A&A...428.1043L - Le Fevre et al. (Cat. J/A+A/428/1043)
3 = 2004ApJS..155..271S 2004ApJS..155..271S - Szokoly et al. (Cat. J/ApJS/155/271)
4 = 2005A&A...437..883M 2005A&A...437..883M - Mignoli et al. (Cat. J/A+A/437/883)
5 = 2007A&A...465.1099R 2007A&A...465.1099R - Ravikumar et al. (Cat. J/A+A/465/1099)
6 = 2009A&A...494..443P 2009A&A...494..443P - Popesso et al.
7 = 2008A&A...478...83V 2008A&A...478...83V - Vanzella et al. (Cat. J/A+A/478/83)
Note (7): Sources only detected in the full band 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 (8): 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 (9): A negative value indicates an upper limit.
Note (10): Notes as follows:
E = sources at the edge that lie partially outside of the survey area.
S = close doubles or triples where manual separation was required.
B = sources with background counts estimated using the background maps.
L = sources with photometry data from L05 (for table 5)
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Byte-by-byte Description of file: table6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- --- [S0]
4- 5 I2 --- S0 Source identification number (1)
7 I1 h RAh Right Ascension (J2000)
9- 10 I2 min RAm Minute of Right Ascension (J2000)
12- 16 F5.2 s RAs Right Ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 29 F4.1 arcsec DEs Declination (J2000)
31- 33 F3.1 arcsec e_pos Positional error
36- 40 F5.2 arcmin OffAng Off-axis angle
42- 49 F8.2 ct Fcts Full-band counts
51- 56 F6.2 ct E_Fcts ?=-1 Full-band counts upper error (2)
58- 63 F6.2 ct e_Fcts ?=-1 Full-band counts lower error (2)
65- 72 F8.2 ct Scts Soft-band counts
74- 79 F6.2 ct E_Scts ?=-1 Soft-band counts upper error (2)
81- 86 F6.2 ct e_Scts ?=-1 Soft-band counts lower error (2)
88- 95 F8.2 ct Hcts Hard-band counts
97-102 F6.2 ct E_Hcts ?=-1 Hard-band counts upper error (2)
104-109 F6.2 ct e_Hcts ?=-1 Hard-band counts lower error (2)
111 I1 h RAOh Optical Right Ascension (J2000)
113-114 I2 min RAOm Optical Right Ascension (J2000)
116-120 F5.2 s RAOs Optical Right Ascension (J2000)
123 A1 --- DEO- Optical Declination Sign (J2000)
124-125 I2 deg DEOd Optical Declination (J2000)
127-128 I2 arcmin DEOm Optical Declination (J2000)
130-133 F4.1 arcsec DEOs Optical Declination (J2000)
135-139 F5.2 arcsec OXoff Offset between optical and X-ray positions
142-146 F5.2 mag Rmag The R band magnitude (WFI)
149-153 I5 --- GOODS ?=-1 GOODS-S CDFS source identification (3)
156-160 F5.2 mag imag ?=-1 The i band magnitude (GOODS-S) (3)
163-185 A23 --- GEMS ?=-1 GEMS CDFS source identification (3)
188-192 F5.2 mag zmag ?=-1 The z band magnitude (GEMS) (3)
196-199 I4 --- SOFI ?=-1 SOFI CDFS source identification (3)
202-206 F5.2 mag Ksmag ?=-1 The Ks band magnitude (SOFI) (3)
209-213 I5 --- IRAC ?=-1 IRAC CDFS source identification (3)
218-223 F6.2 --- F5.8um ?=-1 The 5.8um flux density (IRAC) (3)(4)
226-231 F6.3 --- z ?=-1 Spectroscopic redshift (3)
237-238 I2 --- r_z ?=-1 Reference for the redshift (3)(5)
243-245 I3 --- A03 ?=-1 A03 CDFS source identification (6)
249 I1 h RAAh ?=- A03 CDFS Right Ascension (J2000)
251-252 I2 min RAAm ?=- A03 CDFS Right Ascension (J2000)
254-258 F5.2 s RAAs ?=- A03 CDFS Right Ascension (J2000)
261 A1 --- DEA- A03 CDFS Declination Sign (J2000)
262-263 I2 deg DEAd ?=- A03 CDFS Declination (J2000)
265-266 I2 arcmin DEAm ?=- A03 CDFS Declination (J2000)
268-271 F4.1 arcsec DEAs ?=- A03 CDFS Declination (J2000)
273-282 F10.2 s FExp Full-band effective exposure time
284-293 F10.2 s SExp Soft-band effective exposure time
295-304 F10.2 s HExp Hard-band effective exposure time
307-310 F4.2 --- Gamma Photon index
312-320 E9.2 mW/m2 FFlux Full-band flux (7)
322-330 E9.2 mW/m2 SFlux Soft-band flux (7)
332-340 E9.2 mW/m2 HFlux Hard-band flux (7)
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Note (1): [LBB2008] SO NN in Simbad.
Note (2): Sources not detected in a given band have the errors set to
-1.00. The corresponding counts are upper limits.
Note (3): These were matched to the R-band optical counterparts.
Sources with no matches have these values set to -1.
Note (4): The flux density was normalized to an AB magnitude zero point of 25.
Note (5): Redshift references as follows:
2 = 2004A&A...428.1043L 2004A&A...428.1043L - Le Fevre et al. (Cat. J/A+A/428/1043)
3 = 2004ApJS..155..271S 2004ApJS..155..271S - Szokoly et al. (Cat. J/ApJS/155/271)
4 = 2005A&A...437..883M 2005A&A...437..883M - Mignoli et al. (Cat. J/A+A/437/883)
5 = 2007A&A...465.1099R 2007A&A...465.1099R - Ravikumar et al. (Cat. J/A+A/465/1099)
6 = 2009A&A...494..443P 2009A&A...494..443P - Popesso et al.
7 = 2008A&A...478...83V 2008A&A...478...83V - Vanzella et al. (Cat. J/A+A/478/83)
Note (6): A03 = Alexander et al., 2003, Cat. J/AJ/126/539
Sources with no counterparts have these values set to -1.
Note (7): A negative value indicates an upper limit.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Aug-2009