J/ApJS/240/39 Merging galaxy cluster deep observations (Golovich+, 2019)
Merging cluster collaboration: optical and spectroscopic survey of a radio-
selected sample of 29 merging galaxy clusters.
Golovich N., Dawson W.A., Wittman D.M., Jee M.J., Benson B., Lemaux B.C.,
van Weeren R.J., Andrade-Santos F., Sobral D., de Gasperin F., Bruggen M.,
Bradac M., Finner K., Peter A.
<Astrophys. J. Suppl. Ser., 240, 39 (2019)>
=2019ApJS..240...39G 2019ApJS..240...39G
ADC_Keywords: Clusters, galaxy; Radio sources; Photometry; Spectra, optical;
Redshifts; Galaxies, spectra
Keywords: galaxies: clusters: general; galaxies: clusters: intracluster medium;
galaxies: distances and redshifts; large-scale structure of universe
Abstract:
Multi-band photometric and multi-object spectroscopic surveys of
merging galaxy clusters allow for the characterization of the
distributions of constituent DM and galaxy populations, constraints on
the dynamics of the merging subclusters, and an understanding of
galaxy evolution of member galaxies. We present deep photometric
observations from Subaru/SuprimeCam and a catalog of 4431
spectroscopic galaxies from Keck/DEIMOS observations of 29 merging
galaxy clusters ranging in redshift from z=0.07 to 0.55. The ensemble
is compiled based on the presence of radio relics, which highlight
cluster-scale collisionless shocks in the intracluster medium.
Together with the spectroscopic and photometric information, the
velocities, timescales, and geometries of the respective merging
events may be tightly constrained. In this preliminary analysis, the
velocity distributions of 28 of the 29 clusters are shown to be well
fit by single Gaussians. This indicates that radio-relic mergers
largely occur transverse to the line of sight and/or near-apocenter.
In this paper, we present our optical and spectroscopic surveys,
preliminary results, and a discussion of the value of radio-relic
mergers for developing accurate dynamical models of each system.
Description:
We observed 18 clusters over four nights using the 80 Megapixel
SuprimeCam camera on the Subaru Telescope on Maunakea on 2013 Jul 13;
2014 Feb 25, 26 and 2015 Sep 12. See section 3.2 for further details.
We conducted a spectroscopic survey utilizing the DEIMOS multi-object
spectrograph on the Keck II telescope at the W. M. Keck Observatory on
Maunakea over the following nights: 2013 January 26, 2014 July 14,
2014 September 5, 2013 December 3-5 (half nights), 2014 June 22-23,
2015 February 15, and 2015 December 13. See section 3.3 for further
details.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 64 29 The merging cluster collaboration radio-selected
sample
table7.dat 175 4431 DEIMOS spectroscopic survey catalog
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See also:
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)
VII/249 : 6dF-DR2 Galaxy Survey (Jones+, 2005)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/A+AS/124/283 : BR magnitude and redshift of A1300 (Pierre+ 1997)
J/A+AS/129/399 : The ENACS Catalogue. V. (Katgert+ 1998)
J/A+A/392/795 : Multi-wavelength study of 2 gal. clusters (Valtchanov+, 2002)
J/A+A/399/813 : Multiple merging events in Abell 521 (Ferrari, 2003)
J/AJ/125/2427 : 1.4GHz flux densities of Abell 2255 galaxies (Miller+, 2003)
J/AJ/130/873 : BQS objects in the SDSS DR3 area (Jester+, 2005)
J/A+A/449/461 : Radial velocities in A2744 (Boschin+, 2006)
J/A+A/469/861 : Radial velocities of A115 galaxies (Barrena+, 2007)
J/A+A/481/593 : Radial velocities in A2163 (Maurogordato+, 2008)
J/A+A/503/357 : Redhift catalog of A1237+A1240 galaxies (Barrena+, 2009)
J/A+A/521/A78 : Velocities in the A2345 cluster (Boschin+, 2010)
J/ApJ/728/27 : Chandra and AAOmega observations of Abell 2744 (Owers+, 2011)
J/ApJ/757/22 : Strong and weak lensing analysis of A2261 (Coe+, 2012)
J/MNRAS/434/772 : Velocities in ZwCl2341.1+0000 field (Boschin+, 2013)
J/A+A/549/A8 : Atm. extinction properties above Mauna Kea (Buton+, 2013)
J/ApJ/772/131 : Musket Ball Cluster redshift catalog (Dawson, 2013)
J/ApJS/211/21 : Spectroscopic redshifts of galaxies in MACS (Ebeling+, 2014)
J/ApJ/805/143 : MC2: redshift analysis of CIZA J2242.8+5301 (Dawson+, 2015)
J/MNRAS/450/630 : MC2: SFR in CIZA J2242.8+5301 (Sobral+, 2015)
J/MNRAS/456/2829 : RVs of galaxies in A523 field (Girardi+, 2016)
J/ApJ/841/7 : Spectroscopic obs & members of ZwCl 2341+0000 (Benson+, 2017)
J/ApJ/838/110 : Spectroscopic survey of ZwCl 0008.8+5215 (Golovich+, 2017)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Name Cluster name
21- 29 A9 --- AName Abbreviated name
31- 32 I2 h RAh Hour of right ascension (J2000)
34- 35 I2 min RAm Minute of right ascension (J2000)
37- 40 F4.1 s RAs Second of right ascension (J2000)
42 A1 --- DE- Sign of declination (J2000)
43- 44 I2 deg DEd Degree of declination (J2000)
46- 47 I2 arcmin DEm Arcminute of declination (J2000)
49- 50 I2 arcsec DEs Arcsecond of declination (J2000)
52- 56 F5.3 --- z [0.07/0.6] Redshift
58- 64 A7 --- Band Discovery band
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Name Cluster name as in Table 1; column added by CDS
21- 22 I2 --- Seq [1/20] Cluster running sequence number
24 A1 --- f_Name [sgj] Flag on photometry (1)
26- 37 F12.8 deg RAdeg Right Ascension, decimal degrees (J2000) (2)
39- 50 F12.8 deg DEdeg Declination, decimal degrees (J2000) (2)
52- 56 F5.2 mag Vmag [14/23.2]? Johnson V-band AB magnitude
for Abell 115 only
58- 62 F5.2 mag gmag [12/28]? g-band Subaru SuprimeCam AB magnitude
64- 68 F5.2 mag rmag [12.9/28]?=99 r-band Subaru SuprimeCam
AB magnitude (1)
70- 74 F5.2 mag imag [11/28]?=99 i-band Subaru SuprimeCam AB magnitude
76- 84 F9.7 --- zspec [0.005/1.5] Keck/DEIMOS spectroscopic redshift
86- 92 E7.3 --- e_zspec [2.5e-7/0.0008] Redshift uncertainty
94-175 A82 --- Text Spectral features (3)
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Note (1): Photometry flag:
s = Photometry for Abell 2443 (Seq #8) from SDSS.
g = Photometry for ZwCl 1856.8+6616 (Seq #19) is from Gemini GMOS.
j = Listed r-band photometry for Abell 2034 (Seq #7) is Johnson R-band.
Note (2): RA and DEC are from the matched photometric object
Note (3): Spectral features were noted during DEIMOS data reduction and
are not complete.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 23-May-2019