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 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 114 Multiply imaged systems considered in this work
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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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 1997ApJ...490..493N
67- 70 F4.2 arcsec Srms ?=- Source plane rms (2)
72- 76 F5.2 arcsec Irms ?=- Image plane rms (2)
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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.
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History:
From electronic version of the journal
References:
Navarro et al., Paper I 1997ApJ...490..493N 1997ApJ...490..493N
(End) Patricia Vannier [CDS] 29-Nov-2009