J/MNRAS/444/268 HST Frontier Fields clusters (Richard+, 2014)
Mass and magnification maps for the Hubble Space Telescope Frontier Fields
clusters: implications for high-redshift studies.
Richard J., Jauzac M., Limousin M., Jullo E., Clement B., Ebeling H.,
Kneib J.-P., Atek H., Natarajan P., Egami E., Livermore R., Bower R.
<Mon. Not. R. Astron. Soc., 444, 268-289 (2014)>
=2014MNRAS.444..268R 2014MNRAS.444..268R (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Gravitational lensing ; Redshifts
Keywords: galaxies clusters: individual: Abell 370
galaxies clusters: individual: A1063S
galaxies clusters: individual: Abell 2744
galaxies clusters: individual: MACS J0416.1-2403
galaxies clusters: individual: MACS J0717.5+3745
galaxies clusters: individual: MACS J1149.5+2223
Abstract:
Extending over three Hubble Space Telescope (HST) cycles,
the Hubble Frontier Fields (HFF) initiative constitutes the largest
commitment ever of HST time to the exploration of the distant
Universe via gravitational lensing by massive galaxy clusters. Here,
we present models of the mass distribution in the six HFF cluster
lenses, derived from a joint strong- and weak-lensing analysis
anchored by a total of 88 multiple-image systems identified in
existing HST data. The resulting maps of the projected mass
distribution and of the gravitational magnification effectively
calibrate the HFF clusters as gravitational telescopes. Allowing the
computation of search areas in the source plane, these maps are
provided to the community to facilitate the exploitation of
forthcoming HFF data for quantitative studies of the gravitationally
lensed population of background galaxies. Our models of the
gravitational magnification afforded by the HFF clusters allow us to
quantify the lensing-induced boost in sensitivity over blank-field
observations and predict that galaxies at z>10 and as faint as
m(AB)=32 will be detectable, up to 2mag fainter than the limit of
the Hubble Ultra Deep Field.
Description:
The HST Frontier Fields initiative, announced in the spring of 2013,
devotes 140 orbits of HST time to deep imaging observations of each of
six carefully selected cluster lenses. As a compromise between depth
and spectral coverage, each target field will be observed for 20
orbits in each of the F435W, F606W, and F814W filters (all ACS), as
well as in the F105W, F125W, F140W, and F160W filters (all WFC3),
reaching m∼29 (AB) uniformly in all passbands. The total commitment of
840 orbits of Director's Discretionary Time is spread out over three
cycles, starting with Cycle 21, with two clusters being targeted per
cycle.
All six HFF clusters have previously been targeted with HST. These
observations were instrumental in the selection of the respective
clusters for the HFF project as highly efficient gravitational lenses.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
clusters.dat 71 6 List of cluster
table1.dat 61 52 Strong-lensing features identified in the
existing HST images of A 2744
table2.dat 61 47 Strong-lensing features identified in the
existing HST images of MACS J0416
table3.dat 61 47 Strong-lensing features identified in the
existing HST images of MACS J0717
table4.dat 61 35 Strong-lensing features identified in the
existing HST images of MACS J1149
table5.dat 61 41 Strong-lensing features identified in the
existing HST images of Abell S1063
table6.dat 61 34 Strong-lensing features identified in the
existing HST images of Abell 370
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See also:
J/ApJ/800/18 : HST/WFC3 observations of z∼7-8 galaxies in A2744 (Atek+, 2015)
J/ApJ/811/29 : GLASS. IV. Lensing cluster Abell 2744 (Wang+, 2015)
Byte-by-byte Description of file: clusters.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Cluster Cluster name
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 24 F6.3 s RAs Right ascension (J2000)
26 A1 --- DE- declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 37 F5.2 arcsec DEs Declination (J2000)
39- 43 F5.3 --- z Cluster redshift
45- 54 A10 --- FileName Name of the table with lensing feature
56- 71 A16 --- SName Simbad name of the cluster
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Byte-by-byte Description of file: table*.dat
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Bytes Format Units Label Explanations
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1- 4 F4.1 --- ID ID number, within the cluster (1)
6- 7 I2 h RAh Right ascension (J2000)
9- 10 I2 min RAm Right ascension (J2000)
12- 16 F5.2 s RAs Right ascension (J2000)
18 A1 --- DE- declination sign (J2000)
19- 20 I2 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 29 F5.2 arcsec DEs Declination (J2000)
32- 37 F6.4 --- zprior ? Spectroscopic redshift
43- 51 A9 --- Const [[0.6-6.0]] Constraints (2)
53- 56 F4.2 --- zmodel ? Model redshift
58- 61 F4.2 --- e_zmodel ? rms uncertainty on zmodel
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Note (1): Sources identified as [RJL2014] ANNNN NN.N, [RJL2014] AS1063 NN.N and
[RJL2014] MACS JHHMM NN.N in Simbad.
Note (2): Constraints used during the optimization process are quoted as a
range, enclosed in square brackets.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Feb-2016