VII/228 Las Campanas Infrared Survey (Chen+, 2001-2002)
The Las Campanas Infrared Survey.
I. Early-type galaxy progenitors beyond z=1.
Chen H.-W., McCarthy P.J., Marzke R.O., Wilson J., Carlberg R.G.,
Firth A.E., Persson S.E., Sabbey C.N., Lewis J.R., McMahon R.G., Lahav O.,
Ellis R.S., Martini P., Abraham R.G., Oemler A., Murphy D.C.,
Somerville R.S., Beckett M.G., MacKay C.D.
<Astrophys. J. 560, L131 (2001)>
=2001ApJ...560L.131M 2001ApJ...560L.131M
II. Photometric redshifts, comparison with models and clustering evolution.
<Mon. Not. R. Astron. Soc. 332, 617 (2002)>
=2002MNRAS.332..617F 2002MNRAS.332..617F
III. The H-band imaging survey and the near-infrared and optical photometric
catalogs
<Astrophys. J. 570, 54 (2002)>
=2002ApJ...570...54C 2002ApJ...570...54C
ADC_Keywords: Surveys ; Galaxies, IR ; Photometry, UBVRI ; Photometry, infrared
Keywords: catalogs - cosmology: observations - galaxies: evolution -
galaxies: high-redshift - infrared: galaxies - surveys
Abstract:
The Las Campanas Infrared Survey, based on broadband optical and
near-infrared photometry, is designed to robustly identify a
statistically significant and representative sample of evolved
galaxies at redshifts z>1. We have completed an H-band imaging survey
over 1.1°2 of sky in six separate fields. The average 5σ
detection limit in a 4" diameter aperture is H∼20.8. Here we describe
the design of the survey, the observation strategies, data-reduction
techniques, and object identification procedures. We present sample
near-infrared and optical photometric catalogs for objects identified
in two survey fields. The optical images of the Hubble Deep Field-South
region obtained from the literature reach 5σ detection
thresholds in a 4" diameter aperture of U∼24.6, B∼26.1, V∼25.6,
R∼25.1, and I∼24.2mag. The optical images of the Chandra Deep
Field-South region obtained from our own observations reach 5 σ
detection thresholds in a 4" diameter aperture of V∼26.8, R∼26.2,
I∼25.3, and z'∼23.7mag. We perform object detection in all bandpasses
and identify≳54000 galaxies over 1408 arcmin2 of sky in the two
fields. Of these galaxies, ∼14000 are detected in the H band and ∼2000
have the colors of evolved galaxies, I-H ≳3, at z≳1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
cdfs.dat 335 32038 Complete near-infrared and optical photometric
CDFS Catalog (Table 6)
hdfs.dat 393 27246 Complete near-infrared and optical photometric
HDFS Catalog (Table 7)
obslog.dat 66 24 Journal of H-Band Imaging Observations (Table 2)
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See also:
VII/203 : Las Campanas Redshift Survey (Shectman+ 1996)
J/AJ/119/2598 : u'g'r'i'z' photometry of LCRS galaxies (Sowards-Emmerd+ 2000)
J/ApJS/123/41 : Radio galaxies in LCRS (Machalski+, 1999)
J/ApJS/130/237 : LCRS loose groups of galaxies (Tucker+, 2000)
J/ApJS/137/117 : Las Campanas Distant Cluster Survey (LCDCS) (Gonzales+, 2001)
J/MNRAS/327/588 : Las Campanas/AAT Rich Cluster Survey. I (Pimbblet+, 2001)
J/AN/321/101 : Compact groups of galaxies in LCRS (Allam+, 2000)
Byte-by-byte Description of file: cdfs.dat
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Bytes Format Units Label Explanations
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1 I1 --- Tile Tile number (G1)
4- 7 I4 --- ID ID number within each tile (G1)
10- 13 I4 pix Xpix X pixel position
16- 19 I4 pix Ypix Y pixel position
21- 22 I2 h RAh Hour of Right Ascension (J2000)
24- 25 I2 min RAm Minute of Right Ascension (J2000)
27- 31 F5.2 s RAs Second of Right Ascension (J2000)
33 A1 --- DE- Sign of the Declination (J2000)
34- 35 I2 deg DEd Degree of Declination (J2000)
37- 38 I2 arcmin DEm Arcminute of Declination (J2000)
40- 44 F5.2 arcsec DEs Arcsecond of Declination (J2000)
48- 52 F5.2 mag V2mag V band 2" diameter aperture magnitude
55- 59 F5.2 mag e_V2mag Photometric error in V2mag
62- 66 F5.2 mag V4mag V band 4" diameter aperture magnitude
69- 73 F5.2 mag e_V4mag Photometric error in V4mag
76- 80 F5.2 mag VSmag V band Sextractor "best" magnitude
83- 87 F5.2 mag e_VSmag Photometric error in VSmag
91- 95 F5.2 arcsec RadV V band Kron radius
99-103 F5.2 --- VClass V band "Class Star" Sextractor parameter (G2)
106-110 F5.2 mag R2mag R band 2" diameter aperture magnitude
113-117 F5.2 mag e_R2mag Photometric error in R2mag
120-124 F5.2 mag R4mag R band 4" diameter aperture magnitude
127-131 F5.2 mag e_R4mag Photometric error in R4mag
134-138 F5.2 mag RSmag R band Sextractor "best" magnitude
141-145 F5.2 mag e_RSmag Photometric error in RSmag
147-153 F7.2 arcsec RadR R band Kron radius
157-161 F5.2 --- RClass R band "Class Star" Sextractor parameter (G2)
164-168 F5.2 mag I2mag I band 2" diameter aperture magnitude
171-175 F5.2 mag e_I2mag Photometric error in I2mag
178-182 F5.2 mag I4mag I band 4" diameter aperture magnitude
185-189 F5.2 mag e_I4mag Photometric error in I4mag
192-196 F5.2 mag ISmag I band Sextractor "best" magnitude
199-203 F5.2 mag e_ISmag Photometric error in ISmag
205-211 F7.2 arcsec RadI I band Kron radius
215-219 F5.2 --- IClass I band "Class Star" Sextractor parameter (G2)
222-226 F5.2 mag z2mag z' band 2" diameter aperture magnitude
229-233 F5.2 mag e_z2mag Photometric error in z2mag
236-240 F5.2 mag z4mag z' band 4" diameter aperture magnitude
243-247 F5.2 mag e_z4mag Photometric error in z4mag
250-254 F5.2 mag zSmag z' band Sextractor "best" magnitude
257-261 F5.2 mag e_zSmag Photometric error in zSmag
264-269 F6.2 arcsec Radz z' band Kron radius
273-277 F5.2 --- zClass z' band "Class Star" Sextractor parameter (G2)
280-284 F5.2 mag H2mag H band 2" diameter aperture magnitude
287-291 F5.2 mag e_H2mag Photometric error in H2mag
294-298 F5.2 mag H4mag H band 4" diameter aperture magnitude
301-305 F5.2 mag e_H4mag Photometric error in H4mag
308-312 F5.2 mag HSmag H band Sextractor "best" magnitude
315-319 F5.2 mag e_HSmag Photometric error in HSmag
323-327 F5.2 arcsec RadH H band Kron radius
331-335 F5.2 --- HClass H band "Class Star" Sextractor parameter (G2)
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Byte-by-byte Description of file: hdfs.dat
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Bytes Format Units Label Explanations
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1 I1 --- Tile Tile number (G1)
4- 7 I4 --- ID ID number within each tile (G1)
10- 13 I4 pix Xpix X pixel position
16- 19 I4 pix Ypix Y pixel position
21- 22 I2 h RAh Hour of Right Ascension (J2000)
24- 25 I2 min RAm Minute of Right Ascension (J2000)
27- 31 F5.2 s RAs Second of Right Ascension (J2000)
33 A1 --- DE- Sign of the Declination (J2000)
34- 35 I2 deg DEd Degree of Declination (J2000)
37- 38 I2 arcmin DEm Arcminute of Declination (J2000)
40- 44 F5.2 arcsec DEs Arcsecond of Declination (J2000)
48- 52 F5.2 mag U2mag U band 2" diameter aperture magnitude
55- 59 F5.2 mag e_U2mag Photometric error in U2mag
62- 66 F5.2 mag U4mag U band 4" diameter aperture magnitude
69- 73 F5.2 mag e_U4mag Photometric error in U4mag
76- 80 F5.2 mag USmag U band Sextractor "best" magnitude
83- 87 F5.2 mag e_USmag Photometric error in USmag
91- 95 F5.2 arcsec RadU U band Kron radius
99-103 F5.2 --- UClass U band "Class Star" Sextractor parameter (G2)
106-110 F5.2 mag B2mag B band 2" diameter aperture magnitude
113-117 F5.2 mag e_B2mag Photometric error in B2mag
120-124 F5.2 mag B4mag B band 4" diameter aperture magnitude
127-131 F5.2 mag e_B4mag Photometric error in B4mag
134-138 F5.2 mag BSmag B band Sextractor "best" magnitude
141-145 F5.2 mag e_BSmag Photometric error in BSmag
147-153 F7.2 arcsec RadB B band Kron radius
157-161 F5.2 --- BClass B band "Class Star" Sextractor parameter (G2)
164-168 F5.2 mag V2mag V band 2" diameter aperture magnitude
171-175 F5.2 mag e_V2mag Photometric error in V2mag
178-182 F5.2 mag V4mag V band 4" diameter aperture magnitude
185-189 F5.2 mag e_V4mag Photometric error in V4mag
192-196 F5.2 mag VSmag V band Sextractor "best" magnitude
199-203 F5.2 mag e_VSmag Photometric error in VSmag
205-211 F7.2 arcsec RadV V band Kron radius
215-219 F5.2 --- VClass V band "Class Star" Sextractor parameter (G2)
222-226 F5.2 mag R2mag R band 2" diameter aperture magnitude
229-233 F5.2 mag e_R2mag Photometric error in R2mag
236-240 F5.2 mag R4mag R band 4" diameter aperture magnitude
243-247 F5.2 mag e_R4mag Photometric error in R4mag
250-254 F5.2 mag RSmag R band Sextractor "best" magnitude
257-261 F5.2 mag e_RSmag Photometric error in RSmag
264-269 F6.2 arcsec RadR R band Kron radius
273-277 F5.2 --- RClass R band "Class Star" Sextractor parameter (G2)
280-284 F5.2 mag I2mag I band 2" diameter aperture magnitude
287-291 F5.2 mag e_I2mag Photometric error in I2mag
294-298 F5.2 mag I4mag I band 4" diameter aperture magnitude
301-305 F5.2 mag e_I4mag Photometric error in I4mag
308-312 F5.2 mag ISmag I band Sextractor "best" magnitude
315-319 F5.2 mag e_ISmag Photometric error in ISmag
322-327 F6.2 arcsec RadI I band Kron radius
331-335 F5.2 --- IClass I band "Class Star" Sextractor parameter (G2)
338-342 F5.2 mag H2mag H band 2" diameter aperture magnitude
345-349 F5.2 mag e_H2mag Photometric error in H2mag
352-356 F5.2 mag H4mag H band 4" diameter aperture magnitude
359-363 F5.2 mag e_H4mag Photometric error in H4mag
366-370 F5.2 mag HSmag H band Sextractor "best" magnitude
373-377 F5.2 mag e_HSmag Photometric error in HSmag
381-385 F5.2 arcsec RadH H band Kron radius
389-393 F5.2 --- HClass H band "Class Star" Sextractor parameter (G2)
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Global notes:
Note (G1): Nomencleture:
Table 6: LCIR CDFS N-NNNN
Table 7: LCIR HDFS N-NNNN
Note (G2): "Class Star" Sextractor parameter:
0 for galaxy, 1 for star
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Byte-by-byte Description of file: obslog.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Field Field name
13 I1 --- Tile Tile number in the field
15- 16 I2 h RAh Tile center right ascension (J2000)
18- 19 I2 min RAm Tile center right ascension (J2000)
21- 24 F4.1 s RAs Tile center right ascension (J2000)
26 A1 --- DE- Tile center declination sign (J2000)
27- 28 I2 deg DEd Tile center declination (J2000)
30- 31 I2 arcmin DEm Tile center declination (J2000)
33- 36 F4.1 arcsec DEs Tile center declination (J2000)
38- 41 I4 s Exp Total exposure time
43- 46 F4.2 arcsec FWHM Full width at half-maximum of a typical
point-spread function (PSF)
48- 51 F4.1 mag H5sigma 5σ detection threshold of completed
tile (1)
53- 56 I4 yr Obs.Y Year of observation
58- 60 A3 "month" Obs.M Month of observation
62- 63 I2 d Obs.D First day of observation
64 A1 --- --- [-]
65- 66 I2 d Obs.end Last day of observation
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Note (1): The 5σ detection threshold was determined over a 4" diameter
aperture using a mean sky noise measured in each tile. The actual
depth may vary, depending on the PSF, in each tile.
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Table 3: Summary of Optical Imaging Data
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Field Telescope Detector Plate Scale FOV Bandpass
(arcsec/pix) (arcmin2)
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NOAO-Cetus CTIO 4 m Mosaic II 0.27 36 x 36 V
CFHT CFH 12k 0.20 40 x 40 R, I, z'
CDF-S CTIO 4 m Mosaic II 0.27 36 x 36 B, V, R, I, z'
NTT Deep CTIO 4 m BTC 0.43 29 x 29 V, R, I
CTIO 4 m Mosaic II 0.27 36 x 36 B, z'
1511 CTIO 4 m BTC 0.43 29 x 29 V, R, I
CTIO 4 m Mosaic II 0.27 36 x 36 B, z'
SA22 CTIO 4 m Mosaic 0.26 36 x 36 B, V, R, z'
CFHT CFH 12k 0.20 40 x 40 I
HDF-S CTIO 4 m BTC 0.43 29 x 29 U, B, V, R, I
CTIO/4 m Mosaic II 0.27 36 x 36 z'
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History:
From electronic version of the journal
References:
McCarthy et al., Paper I 2001ApJ...560L.131M 2001ApJ...560L.131M
Firth et al., Paper II 2002MNRAS.332..617F 2002MNRAS.332..617F
Chen et al., Paper III 2002ApJ...570...54C 2002ApJ...570...54C
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 17-Jun-2002