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J/ApJ/621/53        Multiple arc systems in A1689            (Broadhurst+, 2005)
Strong-lensing analysis of A1689 from deep Advanced Camera images.
    Broadhurst T., Benitez N., Coe D., Sharon K., Zekser K., White R., Ford H.,
    Bouwens R., Blakeslee J., Clampin M., Cross N., Franx M., Frye B.,
    Hartig G., Illingworth G., Infante L., Menanteau F., Meurer G., Postman M.,
    Ardila D.R., Bartko F., Brown R.A., Burrows C.J., Cheng E.S., Feldman P.D.,
    Golimowski D.A., Goto T., Gronwall C., Herranz D., Holden B., Homeier N.,
    Krist J.E., Lesser M.P., Martel A.R., Miley G.K., Rosati P., Sirianni M.,
    Sparks W.B., Steindling S., Tran H.D., Tsvetanov Z.I., Zheng W.
   <Astrophys. J., 621, 53-88 (2005)>
   =2005ApJ...621...53B
ADC_Keywords: Clusters, galaxy ; Gravitational lensing

Keywords: cosmological parameters - galaxies: clusters: individual (A1689) -
          gravitational lensing

Abstract:
    We analyze deep multicolor Advanced Camera images of the largest known
    gravitational lens, A1689. Radial and tangential arcs delineate the
    critical curves in unprecedented detail, and many small counterimages
    are found near the center of mass.

Description:
    A1689 was observed in 2002 June with the newly installed ACS on HST.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        74      105   Multiple arc systems in A1689


Byte-by-byte Description of file: table2.dat

   Bytes Format Units     Label      Explanations

   1-  4  F4.1  ---       [BBC2005]  Arc identification number
   6-  7  I2    h         RAh        Hour of Right Ascension (J2000.0)
   9- 10  I2    min       RAm        Minute of Right Ascension (J2000.0)
  12- 18  F7.4  s         RAs        Second of Right Ascension (J2000.0)
      20  A1    ---       DE-        Sign of the Declination (J2000.0)
      21  I1    deg       DEd        Degree of Declination (J2000.0)
  23- 24  I2    arcmin    DEm        Arcminute of Declination (J2000.0)
  26- 31  F6.3  arcsec    DEs        Arcsecond of Declination (J2000.0)
  33- 38  F6.2  arcsec    Xpos       X coordinate centered on the cluster cD
  40- 45  F6.2  arcsec    Ypos       Y coordinate centered on the cluster cD
  47- 51  F5.2  mag       imag       ? Observed i band magnitude (F775W)
  53- 56  F4.2  ---       zphot      ? Bayesian photometric redshift
  58- 61  F4.2  ---       zbest      Best combined photometric redshift for the
                                      system of arcs
  63- 66  F4.2  ---       zspec      ? Spectroscopic redshift
  68- 74  A7    ---       r_zspec    References on zspec (1)

Note (1): References on zspec, defined as follows:
    g = Fort et al. (1997A&A...321..353F)
    h = Frye et al. (2002ApJ...568..558F)
    i = Magellan (not defined)
    j = Duc et al. (2002, Cat. J/A+A/382/60)


History:
    From electronic version of the journal
(End)                                       Marianne Brouty [CDS]    31-Aug-2005