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J/MNRAS/441/2891    ALHAMBRA Survey                          (Molino+, 2014)

The ALHAMBRA Survey: Bayesian photometric redshifts with 23 bands for 3 deg2. Molino A., Benitez N., Moles M., Fernandez-Soto A., Cristobal-Hornillos D., Ascaso B., Jimenez-Teja Y., Schoenell W., Arnalte-Mur P., Povic M., Coe D., Lopez-Sanjuan C., Diaz-Garcia L.A., Varela J., Stefanon M., Cenarro J., Matute I., Masegosa J., Marquez I., Perea J., Del Olmo A., Husillos C., Alfaro E., Aparicio-Villegas T., Cervino M., Huertas-Company M., Aguerri J.A.L., Broadhurst T., Cabrera-Cano J., Cepa J., Gonzalez R.M., Infante L., Martinez V.J., Prada F., Quintana J.M. <Mon. Not. R. Astron. Soc., 441, 2891-2922 (2014)> =2014MNRAS.441.2891M (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Galaxies, photometry Keywords: methods: data analysis - techniques: photometric - catalogues - surveys - galaxies: distances and redshifts - galaxies: evolution - galaxies: photometry Abstract: The Advance Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey has observed eight different regions of the sky, including sections of the Cosmic Evolution Survey (COSMOS), DEEP2, European Large-Area Infrared Space Observatory Survey (ELAIS), Great Observatories Origins Deep Survey North (GOODS-N), Sloan Digital Sky Survey (SDSS) and Groth fields using a new photometric system with 20 optical, contiguous ∼300Å filters plus the JHKs bands. The filter system is designed to optimize the effective photometric redshift depth of the survey, while having enough wavelength resolution for the identification of faint emission lines. The observations, carried out with the Calar Alto 3.5-m telescope using the wide-field optical camera Large Area Imager for Calar Alto (LAICA) and the near-infrared (NIR) instrument Omega-2000, represent a total of ∼700h of on-target science images. Here we present multicolour point-spread function (PSF) corrected photometry and photometric redshifts for ∼438000 galaxies, detected in synthetic F814W images. The catalogues are complete down to a magnitude I∼24.5AB and cover an effective area of 2.79deg2. Photometric zero-points were calibrated using stellar transformation equations and refined internally, using a new technique based on the highly robust photometric redshifts measured for emission-line galaxies. We calculate Bayesian photometric redshifts with the Bayesian Photometric Redshift (bpz)2.0 code, obtaining a precision of δz/(1+zs)=1 per cent for I<22.5 and δz/(1+zs)=1.4 per cent for 22.5<I<24.5. The global n(z) distribution shows a mean redshift <z≥0.56 for I<22.5AB and <z≥0.86 for I<24.5AB. Given its depth and small cosmic variance, ALHAMBRA is a unique data set for galaxy evolution studies. Description: Reddening [E(B-V) = 0.031] (Schlegel et al., 1998ApJ...500..525S) Area: 15'x15' Telescope: 3.5m on Calar Alto (www.caha.es) Epoch Observation Dates: 2005-2012 Based on images produced by the ALHAMBRA-survey: Cristobal-Hornillos et al., 2009ApJ...696.1554C Photometric ZP based on Spectro-photometric stars: Cristobal-Hornillos et al., 2013 (in prep.) PSF-corrected Photometry using ColorPro software: Coe et al. 2006AJ....132..926C Detection-Image: Synthetic F814W HST/ACS Kept detections with S/N>3 (on detection image) mag, magerr = 99, 1-sigma limit: non-detection (flux<0) Photometric Redshifts performed using PSF-corrected photometry + BPZ: Molino et al., 2014MNRAS.441.2891M ZP-corrections derived with BPZA LREADY applied to the current photometry. These proprietary files where created by the ALHAMBRA-survey: Moles et al., 2008AJ....136.1325M Any further information, please contact with: Alberto Molino: amb(at)iaa.es Txitxo Benitez: benitez(at)iaa.es Filters characteristics: ---------------------------------------------------------- FILTER ZP ZPCorr GalExt mlim(3",5-sig) FWHM ["] ---------------------------------------------------------- F365W 30.965 -0.354 0.155 23.95 1.15 F396W 31.061 -0.051 0.146 24.16 1.00 F427W 31.147 -0.148 0.136 23.20 0.82 F458W 31.542 -0.184 0.127 24.09 0.99 F489W 31.568 -0.070 0.118 24.28 1.05 F520W 31.467 0.026 0.110 24.10 0.94 F551W 31.487 -0.004 0.101 23.83 0.93 F582W 31.562 0.031 0.095 23.64 0.94 F613W 31.411 0.080 0.088 23.97 0.91 F644W 31.566 0.093 0.084 23.76 0.98 F675W 31.598 0.111 0.079 23.20 1.03 F706W 31.356 0.091 0.076 23.52 1.08 F737W 31.268 0.111 0.071 23.45 1.09 F768W 31.085 0.133 0.065 23.34 0.99 F799W 30.882 0.103 0.062 23.05 1.02 F830W 30.563 0.105 0.057 23.22 0.97 F861W 30.672 0.161 0.053 22.66 0.82 F892W 29.989 0.211 0.050 22.37 0.96 F923W 29.592 0.149 0.046 21.96 0.99 F954W 28.629 0.262 0.043 21.57 1.16 J 29.106 0.115 0.029 22.39 1.16 H 28.950 0.243 0.017 21.83 0.96 Ks 28.441 0.230 0.011 21.49 1.19 F814W 30.640 0.000 0.060 23.55 0.97 F814W3 30.640 0.000 0.060 23.55 0.97 F814W3c 30.640 0.000 0.060 23.55 0.97 ---------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 148 9957 List of the close pair systems found in each ALHAMBRA sub-field photom.dat 756 441303 ALHAMBRA Gold Catalogue
See also: http://cosmo.iaa.es/content/alhambra-gold-catalog : ALHAMBRA Gold Catalogue Home Page Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 9 A9 --- HField ALHAMBRA sub-field designation fNNpNNcNN, f for field, p for pointing, c for chip 11- 13 I3 --- PID Identification number of the pair within the field 15- 25 I11 --- ID1 ALHAMBRA ID of principal galaxy 27- 37 I11 --- ID2 ALHAMBRA ID of companion galaxy 39- 46 F8.4 deg RA1deg Right ascension of principal galaxy (J2000) 48- 54 F7.4 deg DE1deg Declination of principal galaxy (J2000) 56- 63 F8.4 deg RA2deg Right ascension of companion galaxy (J2000) 65- 71 F7.4 deg DE2deg Declination of companion galaxy (J2000) 73- 78 F6.3 arcsec theta Separation 80- 84 F5.3 --- z1 Best photometric redshift of principal galaxy 86- 90 F5.3 --- z2 Best photometric redshift of companion galaxy 92- 97 F6.4 --- PPF Integrated pair probability function 99-104 F6.4 --- PPFw Integrated PPF corrected by selection effects 106-110 F5.2 mag Imag1 F814W magnitude of principal galaxy 112-116 F5.2 mag Imag2 F814W magnitude of companion galaxy 118-122 F5.3 --- wosr1 Odds weight of principal galaxy 124-128 F5.3 --- wosr2 Odds weight of companion galaxy 130-134 F5.3 --- warea Average area weight of the pair 136-141 F6.2 mag BMAG1 Absolute B magnitude of principal galaxy at z1 143-148 F6.2 mag BMAG2 Absolute B magnitude of companion galaxy at z2
Byte-by-byte Description of file: photom.dat
Bytes Format Units Label Explanations
1- 9 A9 --- HField ALHAMBRA sub-field designation fNNpNNcNN f for field, p for pointing, c for chip 11- 21 I11 --- ID Object ID Number [814+Field+Pointing+CCD+ColorProindex] (ID) 23 I1 --- Field ALHAMBRA field (Field) 25 I1 --- Pointing Pointing within the field (Pointing) 27 I1 --- CCD Detector within the pointing (CCD) 29- 36 F8.4 deg RAdeg Right Ascension (J2000) (RA) 38- 44 F7.4 deg DEdeg Declination (J2000) (Dec) 46- 53 F8.3 pix xpos X-pixel coordinate (x) 55- 62 F8.3 pix ypos Y-pixel coordinate (y) 64- 68 I5 pix Area Isophotal aperture area (area) 70- 75 F6.2 arcsec FWHM Full width at half maximum for detection image (fwhm) 77- 80 F4.2 --- Stell [0/1] SExtractor 'stellarity' (1 = star; 0 = galaxy) (stell) 82- 87 F6.4 --- ell Ellipticity = 1-b/a (ell) 89- 95 F7.3 pix amaj Profile RMS along major axis (a) 97-102 F6.3 pix bmin Profile RMS along minor axis (b) 104-108 F5.1 deg theta Position Angle (CCW/x) (theta) 110-114 F5.2 pix rk Kron apertures in units of A or B (rk) 116-124 F9.3 pix rf Fraction-of-light radii (pixels) (rf) 126-133 F8.2 --- S/N Signal to Noise (SExtFLUXAUTO/SExtFLUXERRAUTO) (s2n) 135-136 I2 --- PhotFlag SExtractor Photometric Flag (photoflag) 137 A1 --- l_F365W Limit flag on F365W 138-144 F7.3 mag F365W ?=-99 Isophotal magnitude [AB] (F365W) 146-151 F6.3 mag e_F365W ? Isophotal magnitude uncertainty [AB] (dF365W) 152 A1 --- l_F396W Limit flag on F396W 153-159 F7.3 mag F396W ?=-99 Isophotal magnitude [AB] (F396W) 161-166 F6.3 mag e_F396W ? Isophotal magnitude uncertainty [AB] (dF396W) 167 A1 --- l_F427W Limit flag on F427W 168-174 F7.3 mag F427W ?=-99 Isophotal magnitude [AB] (F427W) 176-181 F6.3 mag e_F427W ? Isophotal magnitude uncertainty [AB] (dF427W) 182 A1 --- l_F458W Limit flag on F458W 183-189 F7.3 mag F458W ?=-99 Isophotal magnitude [AB] (F458W) 191-196 F6.3 mag e_F458W ? Isophotal magnitude uncertainty [AB] (dF458W) 197 A1 --- l_F489W Limit flag on F489W 198-204 F7.3 mag F489W ?=-99 Isophotal magnitude [AB] (F489W) 206-211 F6.3 mag e_F489W ? Isophotal magnitude uncertainty [AB] (dF489W) 212 A1 --- l_F520W Limit flag on F520W 213-219 F7.3 mag F520W ?=-99 Isophotal magnitude [AB] (F520W) 221-226 F6.3 mag e_F520W ? Isophotal magnitude uncertainty [AB] (dF520W) 227 A1 --- l_F551W Limit flag on F551W 228-234 F7.3 mag F551W ?=-99 Isophotal magnitude [AB] (F551W) 236-241 F6.3 mag e_F551W ? Isophotal magnitude uncertainty [AB] (dF551W) 242 A1 --- l_F582W Limit flag on F582W 243-249 F7.3 mag F582W ?=-99 Isophotal magnitude [AB] (F582W) 251-256 F6.3 mag e_F582W ? Isophotal magnitude uncertainty [AB] (dF582W) 257 A1 --- l_F613W Limit flag on F613W 258-264 F7.3 mag F613W ?=-99 Isophotal magnitude [AB] (F613W) 266-271 F6.3 mag e_F613W ? Isophotal magnitude uncertainty [AB] (dF613W) 272 A1 --- l_F644W Limit flag on F644W 273-279 F7.3 mag F644W ?=-99 Isophotal magnitude [AB] (F644W) 281-286 F6.3 mag e_F644W ? Isophotal magnitude uncertainty [AB] (dF644W) 287 A1 --- l_F675W Limit flag on F675W 288-294 F7.3 mag F675W ?=-99 Isophotal magnitude [AB] (F675W) 296-301 F6.3 mag e_F675W ? Isophotal magnitude uncertainty [AB] (dF675W) 302 A1 --- l_F706W Limit flag on F706W 303-309 F7.3 mag F706W ?=-99 Isophotal magnitude [AB] (F706W) 311-316 F6.3 mag e_F706W ? Isophotal magnitude uncertainty [AB] (dF706W) 317 A1 --- l_F737W Limit flag on F737W 318-324 F7.3 mag F737W ?=-99 Isophotal magnitude [AB] (F737W) 326-331 F6.3 mag e_F737W ? Isophotal magnitude uncertainty [AB] (dF737W) 332 A1 --- l_F768W Limit flag on F768W 333-339 F7.3 mag F768W ?=-99 Isophotal magnitude [AB] (F768W) 341-346 F6.3 mag e_F768W ? Isophotal magnitude uncertainty [AB] (dF768W) 347 A1 --- l_F799W Limit flag on F799W 348-354 F7.3 mag F799W ?=-99 Isophotal magnitude [AB] (F799W) 356-361 F6.3 mag e_F799W ? Isophotal magnitude uncertainty [AB] (dF799W) 362 A1 --- l_F830W Limit flag on F830W 363-369 F7.3 mag F830W ?=-99 Isophotal magnitude [AB] (F830W) 371-376 F6.3 mag e_F830W ? Isophotal magnitude uncertainty [AB] (dF830W) 377 A1 --- l_F861W Limit flag on F861W 378-384 F7.3 mag F861W ?=-99 Isophotal magnitude [AB] (F861W) 386-391 F6.3 mag e_F861W ? Isophotal magnitude uncertainty [AB] (dF861W) 392 A1 --- l_F892W Limit flag on F892W 393-399 F7.3 mag F892W ?=-99 Isophotal magnitude [AB] (F892W) 401-406 F6.3 mag e_F892W ? Isophotal magnitude uncertainty [AB] (dF892W) 407 A1 --- l_F923W Limit flag on F923W 408-414 F7.3 mag F923W ?=-99 Isophotal magnitude [AB] (F923W) 416-421 F6.3 mag e_F923W ? Isophotal magnitude uncertainty [AB] (dF923W) 422 A1 --- l_F954W Limit flag on F954W 423-428 F6.3 mag F954W Isophotal magnitude [AB] (F954W) 430-435 F6.3 mag e_F954W ? Isophotal magnitude uncertainty [AB] (dF954W) 436 A1 --- l_Jmag Limit flag on Jmag 437-443 F7.3 mag Jmag ?=-99 Isophotal magnitude [AB] (J) 445-450 F6.3 mag e_Jmag ? Isophotal magnitude uncertainty [AB] (dJ) 451 A1 --- l_Hmag Limit flag on Hmag 452-458 F7.3 mag Hmag ?=-99 Isophotal magnitude [AB] (H) 460-465 F6.3 mag e_Hmag ? Isophotal magnitude uncertainty [AB] (dH) 466 A1 --- l_Ksmag Limit flag on Ksmag 467-473 F7.3 mag Ksmag ?=-99 Isophotal magnitude [AB] (KS) 475-480 F6.3 mag e_Ksmag ? Isophotal magnitude uncertainty [AB] (dKS) 482-487 F6.3 mag F814W Isophotal magnitude [AB] (F814W) 489-493 F5.3 mag e_F814W Isophotal magnitude uncertainty [AB] (dF814W) 494 A1 --- l_F814W3 Limit flag on F814W3 495-500 F6.3 mag F814W3 3arcsec Circular Aperture magnitude [AB] (F814W_3arcs) 502-507 F6.3 mag e_F814W3 ? 3arcsec Circular Aperture magnitude uncertainty [AB] (dF814W_3arcs) 508-514 F7.3 mag F814W3c ?=-99 Corrected 3arcsec Circular Aperture Magnitude [AB] (F814W3arcscorr) 516-517 I2 --- nfobs Number Filters Detected (out of 24) (nfobs) 519 I1 --- xray [0/1] X-Ray Source [0:NO,1:YES] (2XMM; Watson et al., 2009, J/A+A/493/339) (xray) 521-525 F5.3 % PercW Percentual Photometric Weight (on detection image) (PercW) 527 I1 --- FSatur [0/1] Photometric Saturation-Flag (Satur_Flag) (1) 529-532 F4.2 --- FStellar [0/1] Statistical STAR/GALAXY Discriminator (Stellar_Flag) (2) 534 I1 --- FDupDet [0/1] Duplicated Detection Flag (DupliDet_Flag) (3) 536-540 F5.3 --- zb1 BPZ most likely redshift for the First Peak (zb_1) 542-546 F5.3 --- zb1l Lower limit (95p confidence) for the First Peak (zbmin1) 548-552 F5.3 --- zb1u Upper limit (95p confidence) for the First Peak (zbmax1) 554-559 F6.3 --- tb1 BPZ most likely spectral type for the First Peak (tb_1) 561-565 F5.3 --- Odds1 P(z) contained within zb ± 2*0.01*(1+z) for the First Peak (Odds_1) 567-571 F5.3 --- zml Maximum Likelihood most likely redshift (z_ml) 573-578 F6.3 --- tml Maximum Likelihood most likely spectral type (t_ml) 580-585 F6.3 --- Chi2 ?=99 Poorness of BPZ fit: observed vs. model fluxes (Chi2) 587-592 F6.3 [Msun] logM*1 Stellar Mass for the First Peak (log10(M_sun)) (StellMass1) 594-600 F7.3 mag BMAG1 Absolute Magnitude [AB] (B_JOHNSON) for the First Peak (MABS1) 602-607 F6.3 mag BMAGPrior Magnitude Used for the Prior (F814W) (MagPrior) 609-613 F5.3 % irmsF365W Percentual Weight on F365W 1/RMS image (within ISOphotal Area) (irms_F365W) 615-619 F5.3 % irmsF396W Percentual Weight on F396W 1/RMS image (within ISOphotal Area) (irms_F396W) 621-625 F5.3 % irmsF427W Percentual Weight on F427W 1/RMS image (within ISOphotal Area) (irms_F427W) 627-631 F5.3 % irmsF458W Percentual Weight on F458W 1/RMS image (within ISOphotal Area) (irms_F458W) 633-637 F5.3 % irmsF489W Percentual Weight on F489W 1/RMS image (within ISOphotal Area) (irms_F489W) 639-643 F5.3 % irmsF520W Percentual Weight on F520W 1/RMS image (within ISOphotal Area) (irms_F520W) 645-649 F5.3 % irmsF551W Percentual Weight on F551W 1/RMS image (within ISOphotal Area) (irms_F551W) 651-655 F5.3 % irmsF582W Percentual Weight on F582W 1/RMS image (within ISOphotal Area) (irms_F582W) 657-661 F5.3 % irmsF613W Percentual Weight on F613W 1/RMS image (within ISOphotal Area) (irms_F613W) 663-667 F5.3 % irmsF644W Percentual Weight on F644W 1/RMS image (within ISOphotal Area) (irms_F644W) 669-673 F5.3 % irmsF675W Percentual Weight on F675W 1/RMS image (within ISOphotal Area) (irms_F675W) 675-679 F5.3 % irmsF706W Percentual Weight on F706W 1/RMS image (within ISOphotal Area) (irms_F706W) 681-685 F5.3 % irmsF737W Percentual Weight on F737W 1/RMS image (within ISOphotal Area) (irms_F737W) 687-691 F5.3 % irmsF768W Percentual Weight on F768W 1/RMS image (within ISOphotal Area) (irms_F768W) 693-697 F5.3 % irmsF799W Percentual Weight on F799W 1/RMS image (within ISOphotal Area) (irms_F799W) 699-703 F5.3 % irmsF830W Percentual Weight on F830W 1/RMS image (within ISOphotal Area) (irms_F830W) 705-709 F5.3 % irmsF861W Percentual Weight on F861W 1/RMS image (within ISOphotal Area) (irms_F861W) 711-715 F5.3 % irmsF892W Percentual Weight on F892W 1/RMS image (within ISOphotal Area) (irms_F892W) 717-721 F5.3 % irmsF923W Percentual Weight on F923W 1/RMS image (within ISOphotal Area) (irms_F923W) 723-727 F5.3 % irmsF954W Percentual Weight on F954W 1/RMS image (within ISOphotal Area) (irms_F954W) 729-733 F5.3 % irmsJ Percentual Weight on J 1/RMS image (within ISOphotal Area) (irms_J) 735-739 F5.3 % irmsH Percentual Weight on H 1/RMS image (within ISOphotal Area) (irms_H) 741-745 F5.3 % irmsKs Percentual Weight on Ks 1/RMS image (within ISOphotal Area) (irms_KS) 747-751 F5.3 % irmsF814W Percentual Weight on F814W 1/RMS image (within ISOphotal Area). (irms_F814W) 753-754 I2 --- OPTFlag Optical-Quality-Flag. Number of Optical Filters with PercW<0.8 (irmsOPTFlag) 756 I1 --- NIRFlag NIR-Quality-Flag. Number of NIR Filters with PercW<0.8 (irmsNIRFlag)
Note (1): Photometric Saturation-Flag as follows: 0 = Good Detection 1 = Saturated Detection Note (2): Statistical STAR/GALAXY Discriminator: 0 = Pure-Galaxy 0.5 = Unknown 1 = Pure-Star Note (3): Duplicated Detection Flag as follows: 0 = Non duplicated 1 = Duplicated
History: Copied at http://cosmo.iaa.es/content/alhambra-gold-catalog
(End) Patricia Vannier [CDS] 18-Jan-2016
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