J/ApJS/224/33 CLASH-VLT: the FF cluster MACS J0416.1-2403 (Balestra+, 2016)
CLASH-VLT: dissecting the frontier fields galaxy cluster MACS J0416.1-2403
with ∼800 spectra of member galaxies.
Balestra I., Mercurio A., Sartoris B., Girardi M., Grillo C., Nonino M.,
Rosati P., Biviano A., Ettori S., Forman W., Jones C., Koekemoer A.,
Medezinski E., Merten J., Ogrean G.A., Tozzi P., Umetsu K., Vanzella E.,
van Weeren R.J., Zitrin A., Annunziatella M., Caminha G.B., Broadhurst T.,
Coe D., Donahue M., Fritz A., Frye B., Kelson D., Lombardi M., Maier C.,
Meneghetti M., Monna A., Postman M., Scodeggio M., Seitz S., Ziegler B.
<Astrophys. J. Suppl. Ser., 224, 33-33 (2016)>
=2016ApJS..224...33B 2016ApJS..224...33B (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Redshifts ; Galaxies, spectra ; Photometry, RI
Keywords: galaxies: clusters: general;
galaxies: clusters: individual: MACS J0416.1-2403;
galaxies: distances and redshifts; galaxies: kinematics and dynamics
Abstract:
We present VIMOS-Very Large Telescope (VLT) spectroscopy of the
Frontier Fields (FF) cluster MACS J0416.1-2403 (z=0.397). Taken as
part of the CLASH-VLT survey, the large spectroscopic campaign
provided more than 4000 reliable redshifts over ∼600arcmin2,
including ∼800 cluster member galaxies. The unprecedented sample of
cluster members at this redshift allows us to perform a highly
detailed dynamical and structural analysis of the cluster out to
∼2.2r200 (∼4Mpc). Our analysis of substructures reveals a complex
system composed of a main massive cluster (M200∼0.9x1015M☉
and σV,r200∼1000km/s) presenting two major features: (i) a
bimodal velocity distribution, showing two central peaks separated by
ΔVrf∼1100km/s with comparable galaxy content and velocity
dispersion, and (ii) a projected elongation of the main substructures
along the NE-SW direction, with a prominent sub-clump ∼600kpc SW of
the center and an isolated BCG approximately halfway between the
center and the SW clump. We also detect a low-mass structure at
z∼0.390, ∼10' south of the cluster center, projected at ∼3Mpc, with a
relative line-of-sight velocity of ΔVrf~-1700km/s. The cluster
mass profile that we obtain through our dynamical analysis deviates
significantly from the "universal" NFW, being best fit by a Softened
Isothermal Sphere model instead. The mass profile measured from the
galaxy dynamics is found to be in relatively good agreement with those
obtained from strong and weak lensing, as well as with that from the
X-rays, despite the clearly unrelaxed nature of the cluster. Our
results reveal an overall complex dynamical state of this massive
cluster and support the hypothesis that the two main subclusters are
being observed in a pre-collisional phase, in agreement with recent
findings from radio and deep X-ray data. In this article, we also
release the entire redshift catalog of 4386 sources in the field of
this cluster, which includes 60 identified Chandra X-ray sources and
105 JVLA radio sources.
Description:
The cluster MACS J0416.1-2403 was observed between 2012 December and
2014 November as part of the ESO Large Programme 186.A-0798 "Dark
Matter Mass Distributions of Hubble Treasury Clusters and the
Foundations of ΛCDM Structure Formation Models" (P.I.: Piero
Rosati) using VIMOS at the ESO VLT.
A total of 21 masks were observed (15 LR-Blue (low-resolution) masks
and 6 MR (medium-resolution) masks). The LR-Blue masks cover the
spectral range 3700-6700Å with a resolution of R=180, while the MR
masks cover the range 4800-10000Å with a resolution of R=580.
The massive cluster has been observed with the Hubble Space Telescope
(HST) as part of the Multi-Cycle Treasury program Cluster Lensing And
Supernova survey with Hubble (CLASH; P.I.: M. Postman; Postman et al.
2012, J/ApJS/199/25). The HST survey is nicely complemented by Subaru
wide-field imaging.
Objects:
---------------------------------------------------------------
RA (2000) DE Designation(s)
---------------------------------------------------------------
04 16 10.0 -24 03 58 MACS J0416.1-2403 = MCS J0416.1-2403
---------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 68 4386 CLASH-VLT spectroscopic redshift catalog
of MACS J0416.1-2403
table8.dat 64 65 Redshifts of X-ray sources in the field of MACS0416
table9.dat 64 105 Redshifts of radio sources in the field of MACS0416
--------------------------------------------------------------------------------
See also:
J/A+A/590/A31 : ASTRODEEP Frontier Fields Catalogues (Merlin+, 2016)
J/A+A/579/A4 : MCS J1206.2-0847 galaxies spectral classif. (Girardi+, 2015)
J/ApJ/801/44 : HST lensing analysis of the CLASH sample (Zitrin+, 2015)
J/MNRAS/443/1549 : MACSJ0416.1-2403 strong-lensing analysis (Jauzac+, 2014)
J/ApJS/211/21 : Spectroscopic redshifts of galaxies in MACS (Ebeling+, 2014)
J/ApJ/776/91 : Spectrosc. redshifts of galaxies in 2 clusters (Lemze+, 2013)
J/ApJ/762/L30 : CLASH: MCS J0416.1-2403 strong lensing analysis (Zitrin+, 2013)
J/ApJS/199/25 : CLASH sources for MACS1149.6+2223 (Postman+, 2012)
J/A+A/517/A65 : Velocities of A2294 galaxies (Girardi+, 2010)
J/A+A/512/A12 : VLT/VIMOS spectroscopy in GOODS-South field (Balestra+, 2010)
J/A+A/491/379 : Velocities of galaxies in Abell 520 (Girardi+, 2008)
J/AJ/132/1275 : CIRS (Cluster Infall Regions in the SDSS). I. (Rines+, 2006)
J/ApJ/621/53 : Multiple arc systems in A1689 (Broadhurst+, 2005)
J/AJ/126/2152 : Cluster And Infall Region Nearby Survey. I (Rines+, 2003)
J/A+A/399/813 : Multiple merging events in Abell 521 (Ferrari, 2003)
http://sites.google.com/site/vltclashpublic/ : CLASH-VLT home page
http://www.stsci.edu/hst/campaigns/frontier-fields/Lensing-Models :
HST Frontier Fields lensing models access
Byte-by-byte Description of file: table[289].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Type [1/2]? Source type (1=Chandra source;
2=serendipitous AGN; 5 sources)
(only for table 8)
3- 10 A8 --- --- [CLASHVLT]
11- 26 A16 --- ID CLASHVLT identifier (JHHMMSS.s+DDMMSS)
28- 36 F9.6 deg RAdeg [63.8/64.3] Right Ascension (J2000)
38- 47 F10.6 deg DEdeg [-24.3/-23.8] Declination (J2000)
49- 54 F6.4 --- z [0/4.2] Spectroscopic redshift
56 I1 --- q_z [2/9] Quality flag on z (1)
58 I1 --- r_z [1/5] Reference code for z (2)
60- 64 F5.2 mag Rmag [15.2/25.7]?=9.99 Subaru/Suprime Cam Kron
R-band AB magnitude
66- 68 A3 --- f_ID Flag(s) on ID (3)
--------------------------------------------------------------------------------
Note (1): Quality flag as follows:
2 = Likely, VLT-VIMOS (∼80% reliability); 704 sources for table 2.
3 = Secure, VLT-VIMOS (100% reliability); 3363 sources for table 2.
5 = Ebeling et al. (2014, J/ApJS/211/21); 5 sources for table 2.
6 = Literature MAGELLAN (Kelson, private communications); 11 sources
for table 2.
9 = Single-line, VLT-VIMOS (>90% reliability); 303 sources for table 2.
Note (2): Reference as follows:
1 = CLASH-VLT VIMOS Low Resolution (LR) grism (3582 sources for table 2);
2 = CLASH-VLT VIMOS Medium Resolution (MR) grism (486 sources for table 2);
3 = CLASH-VLT VIMOS Mulitple measures from LR and MR (302 sources
for table 2);
4 = Ebeling et al. (2014, J/ApJS/211/21);
5 = Literature MAGELLAN (Kelson, private communications).
Note (3): Column added by CDS for table 2. Flag as follows:
1 = Chandra source in the field of MACS0416 (also in table 8)
2 = serendipitous AGN in the field of MACS0416 (also in table 8)
R = JVLA radio source in the field of MACS0416 (also in table 9)
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 18-Jul-2016