J/ApJS/215/27 Photometric redshifts in the Hawaii-HDF-N (Yang+, 2014)
Photometric redshifts in the Hawaii-Hubble Deep Field-North (H-HDF-N).
Yang G., Xue Y.Q., Luo B., Brandt W.N., Alexander D.M., Bauer F.E., Cui W.,
Kong X., Lehmer B.D., Wang J.-X., Wu X.-B., Yuan F., Yuan Y.-F., Zhou H.Y.
<Astrophys. J. Suppl. Ser., 215, 27 (2014)>
=2014ApJS..215...27Y 2014ApJS..215...27Y
ADC_Keywords: Redshifts ; Photometry, UBVRI ; Photometry, infrared ; Surveys
Keywords: catalogs; cosmology: observations; galaxies: distances and redshifts;
galaxies: evolution; galaxies: formation; surveys
Abstract:
We derive photometric redshifts (zphot) for sources in the entire
(∼0.4deg2) Hawaii-Hubble Deep Field-North (H-HDF-N) field with the
EAzY code, based on point-spread-function-matched photometry of 15
broad bands from the ultraviolet (U band) to mid-infrared (IRAC
4.5µm). Our catalog consists of a total of 131678 sources. We
evaluate the zphot quality by comparing zphotwith spectroscopic
redshifts (zspec) when available, and find a value of normalized
median absolute deviation σNMAD=0.029 and an outlier fraction
of 5.5% (outliers are defined as sources having
|zphot-zspec|/(1+zspec)>0.15) for non-X-ray sources. More
specifically, we obtain σNMAD=0.024 with 2.7% outliers for
sources brighter than R=23mag, σNMAD=0.035 with 7.4% outliers
for sources fainter than R=23mag, σNMAD=0.026 with 3.9%
outliers for sources having z<1, and σNMAD=0.034 with 9.0%
outliers for sources having z>1. Our zphot quality shows an overall
improvement over an earlier zphot work that focused only on the
central H-HDF-N area. We also classify each object as a star or galaxy
through template spectral energy distribution fitting and
complementary morphological parameterization, resulting in 4959 stars
and 126719 galaxies. Furthermore, we match our catalog with the 2Ms
Chandra Deep Field-North main X-ray catalog. For the 462 matched
non-stellar X-ray sources (281 having zspec), we improve their
zphot quality by adding three additional active galactic nucleus
templates, achieving σNMAD=0.035 and an outlier fraction of
12.5%.
Description:
We collect the U-, B-, V-, R-, I-, z'-, and HK'-band images from
Capak+, 2004, J/AJ/127/180, the J- and H-band images from Keenan et
al. (2010ApJS..186...94K 2010ApJS..186...94K), and the Ks-band image from Wang et al.
(2010, J/ApJS/187/251), respectively. We also make use of an
independently observed z'-band image from Ouchi et al.
(2009ApJ...706.1136O 2009ApJ...706.1136O). The IRAC 3.6, 4.5, 5.8, and 8.0um images were
obtained from the Spitzer Heritage Archive, while another set of IRAC
3.6 and 4.5um images were taken from the Spitzer Extended Deep Survey
(SEDS) presented in Ashby et al. (2013, J/ApJ/769/80).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 475 131678 H-HDF-N photometric catalog
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See also:
II/261 : GOODS initial results (Giavalisco+, 2004)
J/ApJ/769/80 : Spitzer/IRAC observations of five deep fields (Ashby+, 2013)
J/ApJ/742/3 : Photometric catalogs for ECDF-S and CDF-N (Rafferty+, 2011)
J/ApJS/195/10 : The CDF-S survey: 4Ms source catalogs (Xue+, 2011)
J/ApJS/193/14 : DEEP3 Galaxy Redshift Survey: GOODS-N field (Cooper+, 2011)
J/ApJS/189/270 : MUSYC optical imaging in ECDF-S (Cardamone+, 2010)
J/ApJS/188/178 : VLA 1.4GHz observations of GOODS-North field (Morrison+, 2010)
J/ApJS/187/560 : Photometric redshifts of the 2Ms CDF-S (Luo+, 2010)
J/ApJS/187/251 : Ultradeep Ks imaging in the GOODS-N (Wang+, 2010)
J/ApJ/689/687 : GOODS-N spectroscopic survey (Barger+, 2008)
J/ApJS/179/19 : CDFS survey: 2 Ms source catalogs (Luo+, 2008)
J/ApJ/663/81 : SED of hard X-ray selected AGN in XMDS (Polletta+, 2007)
J/ApJ/653/1004 : Galaxies at 1.4≲z≲3.0 in GOODS-North Field (Reddy+, 2006)
J/ApJ/640/579 : Near-infrared spectra of 27 SDSS quasars (Glikman+, 2006)
J/A+A/449/951 : GOODS-MUSIC sample: multicolour catalog (Grazian+, 2006)
J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005)
J/AJ/127/3137 : Hawaii redshifts in the ACS-GOODS region (Cowie+, 2004)
J/AJ/127/3121 : TKRS catalog of GOODS-North Field (Wirth+, 2004)
J/AJ/127/180 : The Hawaii Hubble Deep Field North (Capak+, 2004)
J/AJ/126/632 : UBVRIz'HK' phot. of 2Ms CDFN X-ray sources (Barger+, 2003)
J/AJ/126/539 : The Chandra Deep Fields North and South (Alexander+, 2003)
J/ApJ/596/748 : IR Observations in HDF-North (Thompson+, 2003)
J/AJ/122/2810 : Chandra Deep Field North Survey. V. (Brandt+, 2001)
J/ApJ/538/29 : HDF-N Caltech faint galaxy redshift survey. X. (Cohen+, 2000)
http://irsa.ipac.caltech.edu/applications/DUST/ : IRSA Galactic dust reddening
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- Seq [1/131678] Source identification number
<[YXL2014] NNNNNN> in Simbad
8- 16 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
18- 26 F9.6 deg DEdeg Declination in decimal degrees (J2000)
28- 32 F5.3 --- zph [0/8] Photometric redshift (1)
34- 39 F6.3 --- zalt [0/8]?=-1 Alternative photometric redshift (1)
41- 45 F5.3 --- l68 Lower limit of 1*σ confidence (1)
47- 51 F5.3 --- u68 Upper limit of 1*σ confidence (1)
53- 57 F5.3 --- l95 Lower limit of 2*σ confidence (1)
59- 63 F5.3 --- u95 Upper limit of 2*σ confidence (1)
65- 69 F5.3 --- l99 Lower limit of 3*σ confidence (1)
71- 75 F5.3 --- u99 Upper limit of 3*σ confidence (1)
77- 78 I2 --- Type [-2/1]? Source type, 1=non-stellar (2)
80- 88 E9.3 --- Qz [0/1060]?=-1 Redshift quality parameter Qz (3)
90- 98 E9.3 --- S/N [0/65700] Signal-to-Noise ratio
100-102 A3 --- det [RKZ ] Detection Band(s) (4)
104-109 F6.3 --- zsp [/5.5]?=-1 Spectroscopic Redshift
111-112 I2 --- r_zsp [1/8]?=-1 Reference of Spectroscopic Redshift (5)
114-116 I3 --- Xid [1/503]?=-1 X-ray sources in catalog (6)
118 I1 --- cr [0/1] in central region? (1=yes) (7)
120 A1 --- l_Umag Upper limit flag on Umag
121-129 F9.5 mag Umag [4/35]?=-99 C04 U band AB magnitude (8)
131-139 F9.5 mag e_Umag [0/1.1]?=-99 Umag error (8)
141 A1 --- l_Bmag Upper limit flag on Bmag
142-150 F9.5 mag Bmag ?=-99 C04 B band photometry in AB magnitude (8)
152-160 F9.5 mag e_Bmag ?=-99 Bmag error (8)
162 A1 --- l_Vmag Upper limit flag on Vmag
163-171 F9.5 mag Vmag ?=-99 C04 V band photometry in AB magnitude (8)
173-181 F9.5 mag e_Vmag ?=-99 Vmag error (8)
183 A1 --- l_Rmag Upper limit flag on Rmag
184-192 F9.5 mag Rmag ?=-99 C04 R band photometry in AB magnitude (8)
194-202 F9.5 mag e_Rmag ?=-99 Rmag error (8)
204 A1 --- l_Imag Upper limit flag on Imag
205-213 F9.5 mag Imag ?=-99 C04 I band photometry in AB magnitude (8)
215-223 F9.5 mag e_Imag ?=-99 Imag error (8)
225 A1 --- l_zcmag Upper limit flag on zcmag
226-234 F9.5 mag zcmag ?=-99 C04 z' band AB magnitude (8)
236-244 F9.5 mag e_zcmag ?=-99 zcmag error (8)
246 A1 --- l_zomag Upper limit flag on zomag
247-255 F9.5 mag zomag ?=-99 O09 z' band AB magnitude (8)
257-265 F9.5 mag e_zomag ?=-99 zomag error (8)
267 A1 --- l_Jmag Upper limit flag on Jmag
268-276 F9.5 mag Jmag ?=-99 K10 J band photometry in AB magnitude (8)
278-286 F9.5 mag e_Jmag ?=-99 Jmag error (8)
288 A1 --- l_Hmag Upper limit flag on Hmag
289-297 F9.5 mag Hmag [2/31.3]?=-99 K10 H band AB magnitude (8)
299-307 F9.5 mag e_Hmag [0/1.1]?=-99 Hmag error (8)
309 A1 --- l_Ksmag Upper limit flag on Ksmag
310-318 F9.5 mag Ksmag [2/32.1]?=-99 W10 Ks band AB magnitude (8)
320-328 F9.5 mag e_Ksmag [0/1.1]?=-99 Ksmag error (8)
330 A1 --- l_HKmag Upper limit flag on HKmag
331-339 F9.5 mag HKmag ?=-99 C04 HK' band photometry in AB magnitude (8)
341-349 F9.5 mag e_HKmag ?=-99 HKmag error (8)
351 A1 --- l_A1mag Upper limit flag on A1mag
352-360 F9.5 mag A1mag ?=-99 A13 3.6um band AB magnitude (8)
362-370 F9.5 mag e_A1mag ?=-99 A1mag error (8)
372 A1 --- l_A2mag Upper limit flag on A2mag
373-381 F9.5 mag A2mag ?=-99 A13 4.5um band AB magnitude (8)
383-391 F9.5 mag e_A2mag ?=-99 A2mag error (8)
393 A1 --- l_S1mag Upper limit flag on S1mag
394-402 F9.5 mag S1mag ?=-99 Spitzer/IRAC 3.6um band AB magnitude (8)
404-412 F9.5 mag e_S1mag ?=-99 S1mag error (8)
414 A1 --- l_S2mag Upper limit flag on S2mag
415-423 F9.5 mag S2mag ?=-99 Spitzer/IRAC 4.5um band AB magnitude (8)
425-433 F9.5 mag e_S2mag ?=-99 S2mag error (8)
435 A1 --- l_S3mag Upper limit flag on S3mag
436-444 F9.5 mag S3mag ?=-99 Spitzer/IRAC 5.8um band AB magnitude (8)
446-454 F9.5 mag e_S3mag ?=-99 S3mag error (8)
456 A1 --- l_S4mag Upper limit flag on S4mag
457-465 F9.5 mag S4mag ?=-99 Spitzer/IRAC 8um band AB magnitude (8)
467-475 F9.5 mag e_S4mag ?=-99 S4mag error (8)
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Note (1): For stars, these values are set to 0.000.
Note (2): Code is:
-2 = white dwarf (25 sources);
-1 = other star (4934 sources);
0 = non-X-ray source (126257 sources);
1 = non stellar X-ray source (462 sources; see section 7.4. AGNs).
Note (3): For stars, Qz is set to -1.00E+00.
See equation (8) in section 6.3.
Typically, a value of Qz≲1 indicates reliable zph quality
(i.e., |Δz|/(1+zsp)≲0.05).
Note (4): if one source is detected in more than one band, the first letter
indicates the corresponding catalog where its data come from.
Letters and corresponding catalogs are:
K = Ks band from Wang et al. (2010, J/ApJS/187/251;
<[WCB2010] NNNNN> in Simbad),
Z = z' band from Capak et al. (2004, J/AJ/127/180;
<[CCH2004] z' NNNN> in Simbad),
R = R band from Capak et al. (2004, J/AJ/127/180;
<[CCH2004] R NNNNN> in Simbad); if
Note (5): Reference as follows:
1 = Barger et al. (2008, J/ApJ/689/687;
<[BCW2008] DDD.dddddd+DD.ddddd> in Simbad);
2 = Cowie et al. (2004, J/AJ/127/3137;
<[CBH2004] DDD.dddddd+DD.ddddd> in Simbad);
3 = Reddy et al. (2006, J/ApJ/653/1004; <[RSE2006] AANNNN> in Simbad);
4 = Wirth et al. (2004, J/AJ/127/3121; in Simbad);
5 = Cooper et al. (2011, J/ApJS/193/14);
6 = Cohen et al. (2000, J/ApJ/538/29; <[CHB2000] FMMSS.ss-MMSS.s> in Simbad);
7 = Chapman et al. (2005, J/ApJ/622/772;
<[CBS2005] SMM JHHMMSS.ss+DDMMSS.s> in Simbad);
8 = Barger et al. (2003, J/AJ/126/632; <[ABB2003] CDFN NNN> in Simbad);
-1 = Sources with no spectroscopic redshifts.
Note (6): From Alexander et al. (A03, 2Ms CDF-N main catalog; 2003,
Cat. J/AJ/126/539; <[ABB2003] CDFN NNN> in Simbad). For those not
matched to A03, idxray is set to -1. The number of sources matched to
A03 is 475, including 462 non-stellar X-ray sources & 13 X-ray stars.
Note (7): Code as follows:
0 = outside of the central region of Capak et al. (2004, J/AJ/127/180);
1 = in the central region of Capak et al. (2004, J/AJ/127/180).
Note (8): Abbreviations are:
C04 = Capak et al. (2004, J/AJ/127/180), UBVRI (2001-2002), z' (2000-2001)
et HK' (1999-2002) from KPNO, Subaru and UH telescopes.
O09 = Ouchi et al. (2009ApJ...706.1136O 2009ApJ...706.1136O), z' from Subaru (2001-2007)
K10 = Keenan et al. (2010ApJS..186...94K 2010ApJS..186...94K), JH from CFHT or UH (2006, 2008)
W10 = Wang et al. (2010, J/ApJS/187/251), ultradeep Ks imaging with CFHT
(2006-2008)
A13 = Ashby et al. (2013, J/ApJ/769/80), Spitzer/IRAC in the Spitzer
Extended Deep Survey (2004-2011)
See section 2.1 for photometry details and references and
section "Description" above.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 10-Feb-2015