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. =2001ApJ...560L.131M II. Photometric redshifts, comparison with models and clustering evolution. =2002MNRAS.332..617F III. The H-band imaging survey and the near-infrared and optical photometric catalogs =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{deg}^2^ of sky in six separate fields. The average 5{sigma} 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 5{sigma} 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 {sigma} 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 arcmin^2^ 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: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- Byte-by-byte Description of file: hdfs.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- Byte-by-byte Description of file: obslog.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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 5{sigma} 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 -------------------------------------------------------------------------------- Note (1): The 5{sigma} 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. -------------------------------------------------------------------------------- Table 3: Summary of Optical Imaging Data -------------------------------------------------------------------------------- Field Telescope Detector Plate Scale FOV Bandpass (arcsec/pix) (arcmin^2^) -------------------------------------------------------------------------------- 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' -------------------------------------------------------------------------------- History: From electronic version of the journal References: McCarthy et al., Paper I 2001ApJ...560L.131M Firth et al., Paper II 2002MNRAS.332..617F Chen et al., Paper III 2002ApJ...570...54C ================================================================================ (End) Greg Schwarz [AAS], Patricia Bauer [CDS] 17-Jun-2002