J/ApJ/871/233 Photometric redshifts in the EGOODS-North field (Hsu+, 2019)
Near-infrared survey and photometric redshifts in the extended GOODS-North
field.
Hsu L.-T., Lin L., Dickinson M., Yan H., Bau-Ching H., Wang W.-H.,
Lee C.-H., Yan C.-H., Scott D., Willner S.P., Ouchi M., Ashby M.L.N.,
Chen Y.-W., Daddi E., Elbaz D., Fazio G.G., Foucaud S., Huang J., Koo D.C.,
Morrison G., Owen F., Pannella M., Pope A., Simard L., Wang S.-Y.
<Astrophys. J., 871, 233 (2019)>
=2019ApJ...871..233H 2019ApJ...871..233H
ADC_Keywords: Active gal. nuclei; Infrared sources; Redshifts;
Photometry, ultraviolet; Photometry, ugriz; Cross identifications
Keywords: galaxies: active; galaxies: distances and redshifts;
galaxies: photometry; X-rays: galaxies
Abstract:
We present deep J- and H-band images in the extended Great
Observatories Origins Deep Survey-North field covering an area of
0.22deg2. The observations were taken using WIRCam on the 3.6m
Canada-France-Hawaii Telescope. Together with the reprocessed Ks-band
image, the 5σ limiting AB magnitudes (in 2" diameter apertures)
are 24.7, 24.2, and 24.4 AB mag in the J, H, and Ks bands,
respectively. We also release a multiband photometry and photometric
redshift catalog containing 93598 sources. For non-X-ray sources, we
obtained a photometric redshift accuracy σNMAD=0.036 with an
outlier fraction η=7.3%. For X-ray sources, which are mainly
active galactic nuclei (AGNs), we cross-matched our catalog with the
updated 2M-CDFN X-ray catalog from Xue+ (2016, J/ApJS/224/15) and
found that 658 out of 683 X-ray sources have counterparts. GALEX UV
data are included in the photometric redshift computation for the
X-ray sources to give σNMAD=0.040 with η=10.5%. Our
approach yields more accurate photometric redshift estimates compared
to previous works in this field. In particular, by adopting AGN-galaxy
hybrid templates, our approach delivers photometric redshifts for the
X-ray counterparts with fewer outliers compared to the 3D-Hubble Space
Telescope catalog, which fit these sources with galaxy-only templates.
Description:
This work presents new J-band and H-band observations (PI: L. Lin) in
the extended GOODS-N region (Figure 1) together with Ks-band data
obtained through Hawaiian (PI: L. Cowie) and Canadian (PI: L. Simard)
programs using WIRCam on the CFHT.
All observations were carried out during 2006-2015, and the images
cover the extended GOODS-N region with area of 28'x28'.
Taking advantage of our deep homogeneous NIR images in the wide field,
we assembled publicly released data covering wavelengths from
ultraviolet (UV) to midinfrared (MIR) to compute photometric redshifts.
In all, 14 bands were used for X-ray counterparts and 12 bands for all
other sources.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
photz.dat 612 93598 *Photometric redshift (photo-z) catalog
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Note on photz.dat: Photometric data used to calculate the photometric redshifts:
-------------------------------------------------------------------------------
Filt lambda FWHM 5sig Depth Inst Ref
Å Å (AB mag)
(2" ap.)
-------------------------------------------------------------------------------
FUV 1539 228 25.0^a GALEX General Release 6/7
NUV 2316 796 25.0^a GALEX General Release 6/7
U 3584 616 27.03 KPNO Mayall 4m/MOSAIC Capak+ 2004, J/AJ/127/180
B 4374 1083 27.01 Subaru/Suprime-Cam Capak+ 2004, J/AJ/127/180
V 5448 994 26.40 Subaru/Suprime-Cam Capak+ 2004, J/AJ/127/180
R 6509 1176 26.96 Subaru/Suprime-Cam Capak+ 2004, J/AJ/127/180
I 7973 1405 25.85 Subaru/Suprime-Cam Capak+ 2004, J/AJ/127/180
z 9195 1403 25.54 Subaru/Suprime-Cam Capak+ 2004, J/AJ/127/180
y 9856 585 25.66 Subaru/Suprime-Cam Ouchi+ 2009ApJ...706.1136O 2009ApJ...706.1136O
J 12525 1568 24.7 CFHT/WIRCam This work
H 16335 2875 24.21 CFHT/WIRCam This work
K_s 21580 3270 24.41 CFHT/WIRCam Wang+ 2010, J/ApJS/187/251
3.6um 35634 7444 25.0^b Spitzer/IRAC Ashby+ 2013, J/ApJ/769/80
4.5um 45110 10119 25.0^b Spitzer/IRAC Ashby+ 2013, J/ApJ/769/80
-------------------------------------------------------------------------------
Notes:
a = Values given in Chepter 2 of the GALEX Technical Documentation
(http://www.galex.caltech.edu/researcher/techdoc-ch2.html#2).
b = Values are computed from the rms maps generated by IRACLEAN.
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See also:
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
II/261 : GOODS initial results (Giavalisco+, 2004)
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
II/318 : GOODS Source Catalogs release r2.0z (Giavalisco+ 2008)
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/335 : Revised cat. of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)
J/AJ/126/539 : The Chandra Deep Fields North and South (Alexander+, 2003)
J/ApJ/592/728 : Lyman break galaxies at redshift z∼3 (Steidel+, 2003)
J/AJ/127/180 : The Hawaii Hubble Deep Field North (Capak+, 2004)
J/AJ/127/3137 : Hawaii redshifts in the ACS-GOODS region (Cowie+, 2004)
J/ApJ/640/603 : Catalog of AGNs in the GOODS fields (Treister+, 2006)
J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007)
J/ApJ/689/687 : GOODS-N spectroscopic survey (Barger+, 2008)
J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)
J/ApJS/188/178 : VLA 1.4GHz observations of GOODS-North field (Morrison+, 2010)
J/ApJS/187/251 : Ultradeep Ks imaging in the GOODS-N (Wang+, 2010)
J/ApJS/193/14 : DEEP3 Galaxy Redshift Survey: GOODS-N field (Cooper+, 2011)
J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011)
J/PASJ/63/S379 : MOIRCS Deep Survey deep and wide catalogs (Kajisawa+, 2011)
J/ApJ/742/3 : Photometric catalogs for ECDF-S and CDF-N (Rafferty+, 2011)
J/ApJ/742/61 : Phot. redshift of AGNs from XMM- and C-COSMOS (Salvato+ 2011)
J/ApJ/738/69 : SEDs of galaxies at 3.8<z<5 in GOODS (Shim+, 2011)
J/AJ/141/1 : Spitzer observations of GOODS fields (Teplitz+, 2011)
J/ApJS/195/10 : The CDF-S survey: 4Ms source catalogs (Xue+, 2011)
J/A+A/544/A156 : UltraVISTA Catalogue Release DR1 (McCracken+, 2012)
J/ApJ/769/80 : Spitzer/IRAC observations of five deep fields (Ashby+, 2013)
J/A+A/556/A55 : Multi-color phot. of star-forming galaxies (Ilbert+, 2013)
J/ApJ/796/60 : ECDFS galaxies phot. redshifts & counterparts (Hsu+, 2014)
J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)
J/ApJS/215/27 : Photometric redshifts in the Hawaii-HDF-N (Yang+, 2014)
J/ApJS/218/33 : Spitzer-CANDELS catalog within 5 deep fields (Ashby+, 2015)
J/ApJ/803/34 : z∼4-10 galaxies from HST legacy fields (Bouwens+, 2015)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/ApJS/224/15 : Improved 2Ms and 250ks Chandra catalogs (Xue+, 2016)
Byte-by-byte Description of file: photz.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Seq [1/93598] Running sequence number
of zJHKs detections;
<[HLD2018] NNNNN> for Simbad
7- 17 F11.7 deg RAdeg [188.67/189.8] Right ascension (J2000)
19- 28 F10.7 deg DEdeg [61.98/62.5] Declination (J2000)
30- 37 F8.4 --- zspec [0/6.6]?=-99 Spectroscopic redshift (1)
39- 41 I3 --- q_zspec [-99/2] Spectroscopic redshift quality
(Qs; 1=good) (2)
43- 50 F8.4 --- zphot [0/7]?=-99 The best-fit photometric redshift
52- 59 F8.4 --- e_zphot [0/7]?=-99 Lower 1 sigma value of zphot
61- 66 E6.4 --- E_zphot [0.0001/7]?=-99 Upper 1 sigma value of zphot
68- 78 E11.8 --- bChi2 [2.6e-14/1e+10] χ2 for the best fit
of the SED fitting result
80- 90 E11.8 --- sChi2 [3.9e-12/1e+10] χ2 for the the stellar
SED fitting result
92- 98 F7.3 --- PDZ [0/117] Probability distribution function of
the best-fit zphot (high value
= higher probability of the given zphot)
100-102 I3 --- f_XID [-99/2] X-ray counterpart flag (3)
104-106 I3 --- XID [1/683]?=-99 Sequence number for the X-ray
source given from the 2Ms-CDFN X-ray catalog
(Xue+ 2016, J/ApJS/224/15 --
<[XLB2016] CDFN NNN> in Simbad)
108-112 F5.1 deg RAXdeg ?=-99 X-ray source right ascension (J2000)
114-121 F8.3 deg DEXdeg ?=-99 X-ray source declination (J2000)
123-137 F15.11 uJy Ffuv [0.07/57.85]?=-99 Total FUV flux density
from GALEX GR6/7
139-153 F15.11 uJy e_Ffuv [0.02/3.8]?=-99 Ffuv uncertainty
155-170 F16.11 uJy Fnuv [0.06/1147.553]?=-99 Total NUV flux density
from GALEX GR6/7
172-186 F15.11 uJy e_Fnuv [0.01/7.7]?=-99 Fnuv uncertainty
188-197 E10.5 uJy FUap [-0.13/1663]?=0 2" aperture U-band flux
density (4)
199-205 F7.5 uJy e_FUap [0.0017/0.02]?=0 FUap uncertainty (4)
207-215 E9.5 uJy FBap [-0.3/189.1]?=0 2" aperture B-band flux
density (4)
217-223 E7.5 uJy e_FBap [0.00038/0.013]?=0 FBap uncertainty (4)
225-233 E9.5 uJy FVap [-1.3/798.1]?=0 2" aperture V-band flux
density (4)
235-241 F7.5 uJy e_FVap [0.0024/0.15]?=0 FVap uncertainty (4)
243-251 E9.5 uJy FRap [-2/159.3]?=0 2" aperture R-band flux
density (4)
253-259 E7.5 uJy e_FRap [0.00049/0.06]?=0 FRap uncertainty (4)
261-269 E9.5 uJy FIap [-0.8/934.2]?=0 2" aperture I-band flux
density (4)
271-277 F7.5 uJy e_FIap [0.0018/0.2]?=0 FIap uncertainty (4)
279-288 E10.5 uJy Fzap [-2.1/3194]?=0 2" aperture z-band flux
density (4)
290-296 F7.5 uJy e_Fzap [0.0025/0.3]?=0 Fzap uncertainty (4)
298-307 E10.5 uJy Fyap [-2.7/2237]?=0 2" aperture y-band flux
density (4)
309-315 F7.5 uJy e_Fyap [0.002/0.3]?=0 Fyap uncertainty (4)
317-327 E11.5 uJy FJap [-7.6/10876]?=0 2" aperture J-band flux
density (4)
329-335 F7.5 uJy e_FJap [0.0046/0.6]?=0 FJap uncertainty (4)
337-347 E11.5 uJy FHap [-11/10006]?=0 2" aperture H-band flux
density (4)
349-355 F7.5 uJy e_FHap [0.0098/8.1]?=0 FHap uncertainty (4)
357-367 E11.5 uJy FKap [-5.3/15870]?=0 2" aperture K-band flux
density (4)
369-375 F7.5 uJy e_FKap [0.007/1.2]?=0 FKap uncertainty (4)
377-387 E11.5 uJy FU [-3/20002]?=0 Mayall/MOSAIC U-band flux
density (5)
389-395 F7.5 uJy e_FU [0.0017/1]?=0 FU uncertainty (5)
397-406 E10.5 uJy FB [-5.1/2969]?=0 Subaru/SuprimeCam B-band flux
density (5)
408-414 E7.5 uJy e_FB [0.0007/0.5]?=0 FB uncertainty (5)
416-425 E10.5 uJy FV [-8/4646]?=0 Subaru/SuprimeCam V-band flux
density (5)
427-433 F7.5 uJy e_FV [0.002/1.7]?=0 FV uncertainty (5)
435-444 E10.5 uJy FR [-10/4261]?=0 Subaru/SuprimeCam R-band flux
density (5)
446-452 F7.5 uJy e_FR [0.001/0.9]?=0 FR uncertainty (5)
454-463 E10.5 uJy FI [-5.3/15755]?=0 Subaru/SuprimeCam I-band flux
density (5)
465-471 F7.5 uJy e_FI [0.0018/1.4]?=0 FI uncertainty (5)
473-483 E11.5 uJy Fz [-12.2/45058]?=0 Subaru/SuprimeCam z-band flux
density (5)
485-491 F7.5 uJy e_Fz [0.0025/1.6]?=0 Fz uncertainty (5)
493-503 E11.5 uJy Fy [-52.8/63558]?=0 Subaru/SuprimeCam y-band flux
density (5)
505-511 F7.5 uJy e_Fy [0.002/1.7]?=0 Fy uncertainty (5)
513-523 E11.5 uJy FJ [-140.8/105390]?=0 CFHT/WIRCAM J-band flux
density (5)
525-531 F7.5 uJy e_FJ [0.004/3.7]?=0 FJ uncertainty (5)
533-543 E11.5 uJy FH [-183.2/35099]?=0 CFHT/WIRCAM H-band flux
density (5)
545-552 F8.5 uJy e_FH [0.009/11.5]?=0 FH uncertainty (5)
554-564 E11.5 uJy FKs [-14.3/93070]?=0 CFHT/WIRCAM Ks-band flux
density (5)
566-572 F7.5 uJy e_FKs [0.007/5.3]?=0 FKs uncertainty (5)
574-583 E10.5 uJy F3.6um [-47.8/3299]?=0 Total Spitzer/IRAC 3.6um
flux density
585-592 E8.5 uJy e_F3.6um [1e-5/46.3]?=0 F3.6um uncertainty
594-603 E10.5 uJy F4.5um [-48.1/1760]?=0 Total Spitzer/IRAC 4.5um
flux density
605-612 E8.5 uJy e_F4.5um [1e-5/50]?=0 F4.5um uncertainty
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Note (1): Spectroscopic redshifts were collected from a number of works, mainly
those of Barger+ (2008, J/ApJ/689/687), Cowie+ (2004, J/AJ/127/3137),
Wang+ (2010, J/ApJS/187/251), Cooper+ (2011, J/ApJS/193/14), and
Xue+ (2016, J/ApJS/224/15). See Section 2.4.
Note (2): Sectroscopic redshift quality as follows:
1 = good (3393 occurrences)
2 = uncertain (186 occurrences)
-99 = no zspec available (90,019 occurrences).
Note (3): X-ray counterpart flag as follows:
1 = a zJHKs detection separated from a X-ray counterpart less than 1";
2 = a zJHKs detections separated from a X-ray counterpart large than 1";
-99 = zJHKs detections not considered a counterpart of any X-ray source.
Note (4): The 2" diameter aperture flux densities and associated uncertainties
from SExtractor output parameters FLUX_APER and FLUXERR_APER.
Note (5): Flux densities and associated uncertainties from SExtractor output
parameters FLUX_AUTO and FLUXERR_AUTO.
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History:
Downloaded from http://idv.sinica.edu.tw/lthsu/ --Updated version on Aug 27
Acknowledgements:
Li-Ting Hsu [Academia Sinica, Taipei, Taiwan]
(End) Emmanuelle Perret [CDS] 10-Aug-2020