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J/ApJS/104/185 A deep multicolor survey. I. (Hall+ 1996)
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A deep multicolor survey. I. Imaging observations and catalog of
stellar objects.
Hall P.B., Osmer P.S., Green R.F., Porter A.C., Warren S.J.
<Astrophys. J. Suppl. Ser. 104, 185 (1996)>
=1996ApJS..104..185H (SIMBAD/NED BibCode)
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ADC_Keywords: QSOs ; Galaxies, photometry; Surveys
Keywords: catalogs - galaxies: photometry - quasars: general - surveys
Abstract:
We have used the Kitt Peak National Observatory 4m Mayall telescope to
image 0.83 square degrees of sky in six fields at high Galactic
latitude in six filters spanning 3000-10000A to magnitude limits
ranging from 22.1 to 23.8. We have assembled a catalog of 21375
stellar objects detected in the fields for use primilary in conducting
a multicolor search for quasars. This paper describes the data
reduction techniques used on the CCD data, the methods used to
construct the stellar object catalog, and the simulations performed to
understand its completeness and contamination.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 53 11 Deep multicolor survey fields
table2 47 125 Observations
tables.tex 142 432 LaTeX version of the tables
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See also:
J/ApJ/462/614 : A deep multicolor survey. II. (Hall+ 1996)
J/AJ/114/2269 : A deep multicolor survey. III (Kennefick+ 1997)
J/ApJS/119/189 : A deep multicolor Survey. IV. (Osmer+ 1998)
Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 3 A3 --- Field Field designation
5- 6 I2 h RAh Right ascension (1950.0)
8- 9 I2 min RAm Right ascension (1950.0)
11- 12 I2 s RAs Right ascension (1950.0)
14 A1 --- DE- Declination sign
15- 16 I2 deg DEd Declination (1950.0)
18- 19 I2 arcmin DEm Declination (1950.0)
21- 22 I2 arcsec DEs Declination (1950.0)
24- 31 F8.4 deg GLON Galactic longitude
33- 40 F8.4 deg GLAT Galactic latitude
42- 46 F5.1 arcmin2 Area Area
48- 53 F6.4 mag E(B-V) B-V colour excess (1)
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Note (1): Calculated with a program supplied by D. Burstein,
using data given in:
Burstein & Heiles (1978ApJ...225...40B) and
Burstein & Heiles (1982AJ.....87.1165B).
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 3 A3 --- Field Field designation
5- 7 A3 --- Filt Filter
9 I1 --- Frame Frame
11- 14 I4 s Exp Esposure
16- 23 A8 "DD/MM/YY" OBSdate UT date
25- 26 I2 h OBSh UT time (hour)
28- 29 I2 min OBSm UT time (min)
31- 35 F5.3 --- Airmass Airmass
37- 40 F4.2 arcsec Seeing Seeing
42- 47 F6.2 --- Zeropoint Final zero points for each CCD fields in both
runs (See 5.3)
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Table3: Average magnitude limits
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Filter magT mag5 mag3 magU misG
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U 21.0 22.8 23.45 16.0 25.2
B 21.5 23.8 24.30 16.5 22.2
V 21.0 23.5 24.00 16.5 27.8
R 20.0 23.0 23.50 16.5 33.0
I75 20.0 22.4 23.05 16.0 19.5
I86 19.5 22.1 22.70 16.0 21.5
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Notes: magT: Threshold magnitude
mag5: 5-sigma limiting magnitude (also 90% completeness magnitude)
mag3: 3-sigma limiting magnitude (also 50% completeness magnitude)
magU: Upper limit magnitude
misG: Percentage of misclassified galaxies in the stellar object catalog
at the 5{sigma} limiting magnitude
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Table4: Photometric calibration parameters
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Filter CTerm Ext ZP1 ZP1a ZP0 ZP0a
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U -0.043+/-0.011 0.530+/-0.023 -20.64 -20.69 -20.78 -20.71
B -0.063+/-0.016 0.275+/-0.015 -21.71 -21.75 -21.80 -21.74
V -0.092+/-0.018 0.113+/-0.007 -22.45 -22.50 -22.51 -22.46
R -0.098+/-0.020 0.087+/-0.017 -22.06 -22.06 -22.16 -22.03
I75 0.078+/-0.014 -22.03 -22.05 -22.08 -21.99
I86 0.039+/-0.008 -21.48 -21.48 -21.53 -21.45
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Notes: CTerm: Color term
Ext: Extincition coefficient
ZP1: 1991 base zero point
ZP1a: 1991 average zero point
ZP0: 1990 base zero point
ZP0a: 1990 average zero point
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Acknowledgements: Pat Hall <pathall@as.arizona.edu>
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(End) Patricia Bauer [CDS] 03-Oct-1996