J/ApJ/871/129 A redshift catalog of the galaxy cluster A2029 (Sohn+, 2019)
The massively accreting cluster A2029.
Sohn J., Geller M.J., Walker S.A., Dell'Antonio I., Diaferio A., Rines K.J.
<Astrophys. J., 871, 129 (2019)>
=2019ApJ...871..129S 2019ApJ...871..129S
ADC_Keywords: Clusters, galaxy; Galaxies, spectra; Optical; Redshifts;
Photometry, SDSS; Surveys
Keywords: galaxies: clusters: individual (A2029, A2033) ;
galaxies: distances and redshifts ;
large-scale structure of universe ; surveys ;
X-rays: galaxies: clusters
Abstract:
We explore the structure of galaxy cluster A2029 and its surroundings
based on intensive spectroscopy along with X-ray and weak lensing
observations. The redshift survey includes 4376 galaxies (1215
spectroscopic cluster members) within 40' of the cluster center; the
redshifts are included here. Two subsystems, A2033 and a southern
infalling group (SIG), appear in the infall region based on the
spectroscopy, as well as on the weak lensing and X-ray maps. The
complete redshift survey of A2029 also identifies at least 12
foreground and background systems (10 are extended X-ray sources) in
the A2029 field; we include a census of their properties. The X-ray
luminosities (LX)-velocity dispersions (σcl) scaling
relations for A2029, A2033, SIG, and the foreground/background systems
are consistent with the known cluster scaling relations. The combined
spectroscopy, weak lensing, and X-ray observations provide a robust
measure of the masses of A2029, A2033, and SIG. The total mass of the
infalling groups (A2033 and SIG) is ∼60% of the M200 of the primary
cluster, A2029. Simple dynamical considerations suggest that A2029
will accrete these subsystems in the next few Gyr. In agreement with
simulations and other clusters observed in a similar redshift range,
the total mass in the A2029 infall region is comparable to the A2029
M200 and will mostly be accreted in the long-term future.
Description:
The galaxy catalog for the A2029 field is based mainly on the Sloan
Digital Sky Survey (SDSS) DR12 (Alam+, 2015, V/147). We supplement the
A2029 galaxy catalog with the SDSS DR7 galaxy catalog for an area in
the northeastern part of A2029 of ∼52arcmin2 where the SDSS DR12
photometry is missing.
We conducted a deep redshift survey of A2029 using Multiple Mirror
Telescope (MMT)/Hectospec). The resulting spectra have 6.2Å
spectral resolution and cover 3800-9100Å. The typical exposure time
for each field is 1hr.
Sohn+ (2017, J/ApJS/229/20) reported 982 redshifts of A2029 members.
Here we extend the redshift survey by including fainter objects. In
total, there are 4376 redshifts for galaxies in the field, 321 of them
have both SDSS and MMT spectra. In that case, we use the redshift from
the MMT.
We identify 97 stars in the A2029 field from our spectroscopic survey.
These objects are either stars with SDSS spectroscopic redshifts or
Hectospec targets that were classified as galaxies based on the SDSS
algorithm.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 68 4376 The redshift galaxy catalog of A2029
table6.dat 62 97 The catalog of stars in the A2029 field
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See also:
VII/110 : Rich Clusters of Galaxies (Abell+ 1989)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/MNRAS/301/881 : The ROSAT brightest cluster sample - I. (Ebeling+, 1998)
J/AJ/124/1266 : Redshift survey around Abell 2199 (Rines+, 2002)
J/AJ/132/1275 : CIRS (Cluster Infall Regions in the SDSS). I. (Rines+, 2006)
J/ApJ/654/115 : DEEP2 Galaxy Redshift Survey: SDSS QSOs (Coil+, 2007)
J/ApJ/658/865 : Redshifts galaxies in X-ray-luminous groups (Jeltema+, 2007)
J/ApJ/665/921 : Redshift survey in the field of A1689 (Frye+, 2007)
J/ApJS/183/197 : Galaxy clusters identified from the SDSS-DR6 (Wen+, 2009)
J/ApJS/191/254 : GMBCG galaxy cluster catalog from SDSS DR7 (Hao+, 2010)
J/ApJ/736/21 : Galaxy clusters opt. cat. from AMF on SDSS DR6 (Szabo+ 2011)
J/ApJS/199/34 : Clusters of galaxies in SDSS-III (Wen+, 2012)
J/A+A/555/A30 : REFLEX II. Properties of the survey (Boehringer+ 2013)
J/ApJ/767/15 : Hectospec Cluster Survey (HeCS) (Rines+, 2013)
J/ApJ/773/86 : Star-forming galaxies in ACO 2029 (Tyler+, 2013)
J/ApJ/797/106 : Redshifts in nine galaxy cluster fields (Hwang+, 2014)
J/ApJ/797/82 : Brightest cluster galaxies in Abell clusters (Lauer+, 2014)
J/A+A/575/A48 : Alignment of galaxies in galaxy clusters (Sifon+, 2015)
J/ApJS/229/20 : MMT/Hectospec redshift survey for Abell 2029 (Sohn+, 2017)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- objID Object identifier from SDSS (1)
21- 30 F10.6 deg RAdeg [227/229] Right Ascension (J2000)
32- 39 F8.6 deg DEdeg [5.1/6.5] Declination (J2000)
41- 45 F5.2 mag rmag [13.5/22.5] Composite model r band magnitude (G1)
47- 53 F7.5 --- z [0.004/6.4] Redshift
55- 62 F8.5 --- e_z [1e-05/1]?=-9 Error in z
64- 66 A3 --- r_z Reference code(s) for z (2)
68 A1 --- Mm [N/Y] Membership determined based on the caustics
(Y)es (1054 occurrences); or (N)o
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Note (1): SDSS objID from DR12 (V/147) for recno<4260 or from DR7 (II/294).
Note (2): References as follows:
1 = this survey
2 = Tyler+ (2013, J/ApJ/773/86)
3 = SDSS
4 = NED
5 = Sohn+ (2015JKAS...48..381S 2015JKAS...48..381S)
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- objID Object identifier from SDSS (1)
21- 30 F10.6 deg RAdeg [227/229] Right Ascension (J2000)
32- 39 F8.6 deg DEdeg [5.2/6.4] Declination (J2000)
41- 45 F5.2 mag rmag [14.7/21.5] Composite model r band magnitude (G1)
47- 54 F8.5 --- z [-0.0011/0.0009] Redshift
56- 62 F7.5 --- e_z [0/0.0006] Error in z
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Note (1): SDSS objID from DR12 (V/147) for recno<93 or from DR7 (II/294).
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Global notes:
Note (G1): The composite model magnitudes are a linear combination of
de Vaucouleurs and model magnitudes. The foreground extinction
correction is applied.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS] 19-Feb-2020