J/ApJ/872/192 A spectroscopic census of A2029 members (Sohn+, 2019)
A complete spectroscopic census of A2029: a tale of three histories.
Sohn J., Geller M.J., Zahid H.J., Fabricant D.G.
<Astrophys. J., 872, 192 (2019)>
=2019ApJ...872..192S 2019ApJ...872..192S
ADC_Keywords: Clusters, galaxy; Galaxies, spectra; Optical; Velocity dispersion;
Redshifts
Keywords: galaxies: clusters: individual (A2029, A2033) ;
galaxies: distances and redshifts ; galaxies: evolution ; large-
scale structure of universe ; surveys
Abstract:
A rich spectroscopic census of members of the local massive cluster
A2029 includes 1215 members of A2029 and its two infalling groups,
A2033 and the Southern Infalling Group. The two infalling groups are
identified in spectroscopic, X-ray, and weak-lensing maps. We identify
active galactic nuclei (AGNs), star-forming galaxies, E+A galaxies,
and quiescent galaxies based on the spectroscopy. The fractions of AGN
and post-starburst E+A galaxies in A2029 are similar to those of other
clusters. We derive the stellar mass (M*)-metallicity relation of
A2029 based on 227 star-forming members; A2029 members within
109M☉<M*<109.5M☉ are more metal-rich than Sloan
Digital Sky Survey galaxies within the same mass range. We utilize the
spectroscopic index Dn4000, a strong age indicator, to trace past
and future evolution of the A2029 system. The median Dn4000 of the
members decreases as the projected clustercentric distance increases
for all three subsystems. The Dn4000-M* relations of the members
in A2029 and its two infalling groups differ significantly, indicating
the importance of stochastic effects for understanding the evolution
of cluster galaxy populations.
Description:
We use the dense and complete ACO 2029 spectroscopic survey from
Sohn+ (2019, J/ApJ/871/129), which extends the surveys of
Tyler+ (2013, J/ApJ/773/86) and Sohn+ (2017, J/ApJS/229/20).
We carried out a spectroscopic survey using Hectospec mounted on the
MMT 6.5 telescope. The spectra of all targets uniformly cover
3800-9100Å with 6.2Å spectral resolution. We obtain a total of
2890 high-quality redshifts from all of the Hectospec observations.
The typical redshift uncertainty of Hectospec redshifts is 32km/s.
Objects:
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RA (ICRS) DE Designation(s)
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15 10 58.7 +05 45 42 A2029 = ACO 2029
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 90 1215 Physical properties of the spectroscopic members
of A2029
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See also:
IX/57 : The Chandra Source Catalog (CSC), Release 2.0 (Evans+, 2019)
J/ApJS/122/51 : Spectrosc. cat. of 10 rich galaxy clusters (Dressler+ 1999)
J/AJ/124/1266 : Redshift survey around Abell 2199 (Rines+, 2002)
J/ApJ/617/240 : Oxygen abundances in GOODS-North field (Kobulnicky+, 2004)
J/A+A/430/19 : VRI photometry of Abell 3921 galaxies (Ferrari+, 2005)
J/A+A/437/883 : K20 survey: spectroscopic catalogue (Mignoli+, 2005)
J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
J/ApJ/658/865 : Redshifts of gal. in X-ray-luminous groups (Jeltema+, 2007)
J/MNRAS/383/581 : Broad-line Balmer decrements in blue AGN (Dong+, 2008)
J/AJ/135/1837 : Spectroscopy in A2199 and Virgo clusters (Rines+, 2008)
J/MNRAS/401/1429 : WiggleZ dark energy survey (DR1) (Drinkwater+, 2010)
J/ApJS/191/254 : GMBCG galaxy cluster catalog from SDSS DR7 (Hao+, 2010)
J/AJ/139/1857 : Sample of major galaxy pairs at z=0.08-0.38 (Woods+, 2010)
J/ApJ/758/25 : Optical properties of WISE galaxies (Hwang+, 2012)
J/ApJ/773/86 : Star-forming galaxies in ACO 2029 (Tyler+, 2013)
J/ApJS/213/35 : SHELS: complete galaxy redshift survey (Geller+, 2014)
J/ApJS/215/22 : The Extended Virgo Cluster Catalog (EVCC) (Kim+, 2014)
J/MNRAS/444/147 : Richness of galaxy clusters (Oguri, 2014)
J/ApJ/785/104 : redMaPPer. I. Algorithm applied to SDSS DR8 (Rykoff+, 2014)
J/ApJ/800/80 : MIR properties of galaxies in A2199 at z∼0.03 (Lee+, 2015)
J/MNRAS/458/1590 : Deep spectroscopy of Abell 85 (Agulli+, 2016)
J/ApJS/224/11 : SHELS: redshift survey of the F1 DLS field (Geller+, 2016)
J/A+A/607/A131 : Abell 520 galaxies redshifts (Deshev+, 2017)
J/ApJS/229/20 : MMT/Hectospec redshift survey for Abell 2029 (Sohn+, 2017)
J/ApJ/842/88 : Redshift survey of the central region of A2199 (Song+, 2017)
J/ApJS/234/21 : Hectospec survey of galaxies in COSMOS (Damjanov+, 2018)
J/AJ/156/224 : Gemini/HST galaxies in 4 massive clusters (Jorgensen+, 2018)
J/ApJ/856/172 : The HectoMAP cluster survey. I. (Sohn+, 2018)
J/ApJ/871/129 : A redshift catalog of the galaxy cluster A2029 (Sohn+, 2019)
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 SDSS object identifier
21- 30 F10.6 deg RAdeg [226.15/229.3] Right Ascension (J2000)
32- 39 F8.6 deg DEdeg [4.1/7.4] Declination (J2000)
41- 46 F6.4 --- z [0.069/0.09] Spectroscopic redshift
48- 54 F7.4 --- e_z [0/0.001]?=-9 Uncertainty in z
56- 61 F6.2 [Msun] logM* [7/11.9]?=-99 log stellar mass
63- 66 F4.2 [Msun] e_logM* [0/0.6] Uncertainty in logM*
68- 72 F5.2 --- Dn4000 [0.1/4.9]?=-9 The Dn4000 spectroscopic
index
74- 78 F5.2 --- e_Dn4000 [0/3.8]?=-9 Uncertainty in Dn4000
80- 82 I3 km/s sigma [7/983]?=-99 Velocity dispersion
84- 86 I3 km/s e_sigma [0/873]?=-99 Uncertainty in sigma
88 A1 --- Class Spectral type code (1)
90 A1 --- E+A? [NY] An E+A galaxy?
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Note (1): Spectral types of emission-line galaxies as follows:
S = star forming (210 occurrences);
C = composite (29 occurrences);
A = AGN (38 occurrences);
N = not available (938 occurrences).
See Section 4.1 for further explanations.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 06-Aug-2020