J/ApJS/158/161 Photometric redshift catalog from the RCS (Hsieh+, 2005)
A photometric redshift galaxy catalog from the Red-Sequence Cluster Survey.
Hsieh B.C., Yee H.K.C., Lin H., Gladders M.D.
<Astrophys. J. Suppl. Ser., 158, 161-177 (2005)>
=2005ApJS..158..161H 2005ApJS..158..161H
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Redshifts
Keywords: catalogs - galaxies: distances and redshifts - galaxies: general -
galaxies: photometry - surveys - techniques: photometric
Abstract:
The Red-Sequence Cluster Survey (RCS, Cat. J/ApJS/157/1) provides a
large and deep photometric catalog of galaxies in the z' and Rc
bands for 90°2 of sky, and supplemental V and B data have been
obtained for 33.6°2. We compile a photometric redshift catalog
from these four-band data by utilizing the empirical quadratic
polynomial photometric redshift fitting technique in combination with
CNOC2 and GOODS/HDF-N redshift data. The training set includes 4924
spectral redshifts. The resulting catalog contains more than one
million galaxies with photometric redshifts <1.5 and Rc<24, giving
an rms scatter σ(Δz)<0.06 within the redshift range
0.2<z<0.5 and σ(Δz)<0.11 for galaxies at 0.0<z<1.5.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 53 10 CFHT RCS patches
table3.dat 134 1464939 Photometric redshift catalog for extended sources
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See also:
J/ApJS/157/1 : Red-Sequence Cluster Survey (Gladders+, 2005)
J/ApJS/129/475 : The CNOC2 survey. I. (Yee+, 2000)
II/261 : GOODS initial results (Giavalisco+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq Patch number
4- 10 A7 --- Name Patch name
12- 13 I2 h RAh Hour of right ascension (J2000)
15- 16 I2 min RAm Minute of right ascension (J2000)
18- 21 F4.1 s RAs Second of right ascension (J2000)
23 A1 --- DE- Sign of the declination (J2000)
24- 25 I2 deg DEd Degree of declination (J2000)
27- 28 I2 arcmin DEm Arcminute of declination (J2000)
30- 31 I2 arcsec DEs Arcsecond of declination (J2000)
33- 36 F4.2 deg2 Area1 Area with Rc and z'
38- 41 F4.2 deg2 Area2 Area with four filters
43- 53 A11 --- Note Note
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 11 I11 --- RCS Object RCS identification number (1)
15- 23 F9.6 h RAhour Hour of Right Ascension (J2000)
25- 34 F10.5 deg DEdeg Declination in decimal degrees (J2000)
37- 41 F5.2 mag z'mag Total z' band magnitude (2)
45- 48 F4.2 mag e_z'mag ?=9.99 Error in z'mag (3)
52- 55 F4.2 mag e-z'mag ?=9.00 Color aperture error in z'mag (4)
58- 62 F5.2 mag Rcmag Total Rc band magnitude (2)
66- 69 F4.2 mag e_Rcmag ?=9.99 Error in Rcmag (3)
73- 76 F4.2 mag e-Rcmag ?=9.00 Color aperture error in Rcmag (4)
79- 83 F5.2 mag Vmag ?=99.00 Total V band magnitude (2)
87- 90 F4.2 mag e_Vmag ?=9.99 Error in Vmag (3)
94- 97 F4.2 mag e-Vmag ?=9.00 Color aperture error in Vmag (4)
100-104 F5.2 mag Bmag ?=99.00 Total B band magnitude (2)
108-111 F4.2 mag e_Bmag ?=9.99 Error in Bmag (3)
115-118 F4.2 mag e-Bmag ?=9.00 Color aperture error in Bmag (4)
121-126 F6.3 --- z ?=99.000 Photometric redshift (5)
129-134 F6.3 --- e_z ?=99.000 Computed error in z (5)
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Note (1): The first two digits indicate the patch number, numbered 01 to 10
in the order of the patches in Table 1. The second two digits
indicate the pointing number within a patch. The third two digits
indicate the CCD chip number within the pointing. The remaining
five digits represent the object number within each CCD chip.
Note (2): Values of >90.00 in the total magnitude, 9.99 in the error,
and 9.00 in the color aperture error indicate unknown values for
that filter.
Note (3): Derived from the photon noise in the optimal aperture (on total
magnitude, see Yee 1991PASP..103..396Y 1991PASP..103..396Y, Gladders & Yee 2005, Cat.
J/ApJS/157/1) for each object.
Note (4): The sum in quadrature of the photon errors for each filter in
the color aperture.
Note (5): 99.000=Unknown.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 02-Nov-2005