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J/ApJ/668/643       Multiply imaged gravitational lens systems (Limousin+, 2007)
Combining strong and weak gravitational lensing in Abell 1689.
    Limousin M., Richard J., Jullo E., Kneib J.-P., Fort B., Soucail G.,
    Eliasdottir A., Natarajan P., Ellis R.S., Smail I., Czoske O., Smith G.P.,
    Hudelot P., Bardeau S., Ebeling H., Egami E., Knudsen K.K.
   <Astrophys. J., 668, 643-666 (2007)>
   =2007ApJ...668..643L
ADC_Keywords: Clusters, galaxy ; Redshifts

Keywords: cosmology: observations - galaxies: clusters: individual (A1689) -
          gravitational lensing

Abstract:
    We present a reconstruction of the mass distribution of galaxy cluster
    Abell 1689 at z=0.18 using detected strong lensing features from
    deep ACS observations and extensive ground based spectroscopy. Earlier
    analyses have reported up to 32 multiply imaged systems in this
    cluster, of which only 3 were spectroscopically confirmed. In this
    work, we present a parametric strong lensing mass reconstruction using
    34 multiply imaged systems of which 24 have newly determined
    spectroscopic redshifts, which is a major step forward in building a
    robust mass model. In turn, the new spectroscopic data allows a more
    secure identification of multiply imaged systems.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        76      114   Multiply imaged systems considered in this work


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  4  F4.1  ---    [BBC2005]  Sequential number
   6-  7  I2    h       RAh       Right ascension (J2000)
   9- 10  I2    min     RAm       Right ascension (J2000)
  12- 17  F6.3  s       RAs       Right ascension (J2000)
      19  A1    ---     DE-       Declination sign (J2000)
  20- 21  I2    deg     DEd       Declination (J2000)
  23- 24  I2    arcmin  DEm       Declination (J2000)
  26- 30  F5.2  arcsec  DEs       Declination (J2000)
  32- 36  F5.2  mag     F775W     ?=- F775W magnitude
  38- 41  F4.2  ---     zph       ?=- Photometric redshift (from Broadhurst et
                                      al., 2005, Cat. J/ApJ/621/53)
  43- 46  F4.2  ---     E_zph     ?=- Error on zph (upper limit)
  48- 51  F4.2  ---     e_zph     ?=- Error on zph (lower limit)
  53- 56  F4.2  ---     zmod      ?=- Model redshift (1)
  58- 61  F4.2  ---     e_zmod    ?=- rms uncertainty on zmod
  63- 65  F3.1  ---     zsp       ?=- Spectroscopic redshift, from Paper I,
                                      Navarro et al., 1997ApJ...490..493N
  67- 70  F4.2  arcsec  Srms      ?=- Source plane rms (2)
  72- 76  F5.2  arcsec  Irms      ?=- Image plane rms (2)

Note (1): Redshift estimation inferred from the mass model when all
     spectroscopically confirmed multiply imaged systems have been included
     in the optimization. Error bars quote 3σ confidence level.
Note (2): The mean scatter is given for the whole system, not for each
     individual image composing a system.


History:
    From electronic version of the journal

References:
    Navarro et al., Paper I     1997ApJ...490..493N
(End)                                      Patricia Vannier [CDS]    29-Nov-2009