J/AJ/156/224 Gemini/HST GCP: galaxies in 4 massive clusters (Jorgensen+, 2018)
The Gemini/Hubble Space Telescope Galaxy Cluster Project: stellar populations
in the low-redshift reference cluster galaxies.
Jorgensen I., Chiboucas K., Webb K., Woodrum C.
<Astron. J., 156, 224 (2018)>
=2018AJ....156..224J 2018AJ....156..224J (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Redshifts ; Velocity dispersion ;
Photometry, SDSS ; Spectroscopy ; Abundances
Keywords: galaxies: clusters: individual (Abell 1656/Coma, Abell 426/Perseus,
Abell 2029, Abell 2142) - galaxies: evolution -
galaxies: stellar content
Abstract:
In order to study stellar populations and galaxy structures at
intermediate and high redshift (z=0.2-2.0) and link these properties
to those of low-redshift galaxies, there is a need for well-defined
local reference samples. Especially for galaxies in massive clusters,
such samples are often limited to the Coma cluster galaxies. We present
consistently calibrated velocity dispersions and absorption-line indices
for galaxies in the central 2 R500x2 R500 of four massive clusters
at z<0.1: Abell 426/Perseus, Abell 1656/Coma, Abell 2029, and Abell 2142.
The measurements are based on data from the Gemini Observatory, McDonald
Observatory, and Sloan Digital Sky Survey. For bulge-dominated galaxies,
the samples are 95% complete in Perseus and Coma and 74% complete in
A2029 and A2142, to a limit of MB,abs=←18.5 mag. The data serve as
the local reference for our studies of galaxy populations in the
higher-redshift clusters that are part of the Gemini/HST Galaxy Cluster
Project (GCP). We establish the scaling relations between line indices
and velocity dispersions as a reference for the GCP. We derive stellar
population parameters, ages, metallicities [M/H], and abundance ratios
from line indices, both averaged in bins of velocity dispersion and
from individual measurements for galaxies in Perseus and Coma. The
zero points of relations between the stellar population parameters and
the velocity dispersions limit the allowed cluster-to-cluster variation
of the four clusters to ±0.08 dex in age, ±0.06 dex in [M/H],
±0.07 dex in [CN/Fe], and ±0.03 dex in [Mg/Fe].
Description:
The spectroscopic data were assembled from four main sources.
1. We previously published spectroscopic data for 116 Coma cluster members
(Jorgensen 1999MNRAS.306..607J 1999MNRAS.306..607J). These data were assembled from our own
observations with the Large Cassegrain Spectrograph (LCS) and the Fiber
Multi-Object Spectrograph (FMOS) on the McDonald Observatory 2.7 m
telescope. The derived spectroscopic parameters were supplemented with
literature data available at the time and calibrated to consistency. The
reader is referred to Jorgensen (1999MNRAS.306..607J 1999MNRAS.306..607J) for full details on
the observations, processing, and calibration to consistency.
2. Observations of 61 Perseus cluster members were obtained with the LCS
on the McDonald Observatory 2.7 m telescope. These data were previously
used as part of the reference sample in our GCP analysis papers (Barr et al.
2005, J/AJ/130/445; Jorgensen et al. 2005AJ....129.1249J 2005AJ....129.1249J, 2014,
J/AJ/148/117, 2017, J/AJ/154/251; Jorgensen & Chiboucas 2013, J/AJ/145/77).
However, the data have not previously been published.
3. Observations of A2029 and A2142 cluster members were obtained with the
Gemini Multi-Object Spectrograph (GMOS-N; Hook et al. 2004PASP..116..425H 2004PASP..116..425H)
on Gemini North. The observations cover 69 and 63 galaxies in A2029 and
A2142, respectively.
4. We use SDSS spectra for all four clusters and derive the relevant
spectroscopic parameters from these spectra. The data cover 336 member
galaxies with no data from the other data sources; 222 of these are
passive bulge-dominated galaxies brighter than our analysis limit of
MB,abs=-18.5 mag (Vega magnitudes). The SDSS spectra also provide all
line indices blueward of Hβ for the Coma cluster galaxies.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 98 4 Cluster properties and parent samples
table13.dat 286 61 Abell 426/Perseus: LCS data
table14.dat 286 132 Abell 2029 and Abell 2142: GMOS-N data
table15.dat 286 555 Perseus, Coma, Abell 2029, and Abell 2142:
measurements from SDSS spectra
table16.dat 286 646 Perseus, Coma, Abell 2029, and Abell 2142: fully
calibrated spectral parameters
table18.dat 148 37 Average parameters, ages, [M/H], [CN/Fe],
and [Mg/Fe]
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See also:
VII/42 : GMP catalogue: galaxies in the Coma cluster (Godwin+ 1983)
VII/110 : Rich Clusters of Galaxies (Abell+ 1989)
J/ApJS/97/77 : Catalog of Coma Cluster Galaxies (Doi+ 1995)
J/A+AS/126/67 : Coma and Perseus clusters galaxies (Andreon+ 1997)
J/A+AS/139/141 : Galaxies in the Perseus Cluster (Brunzendorf+, 1999)
J/ApJS/137/279 : Spectroscopic Survey in Coma (Mobasher+, 2001)
J/AJ/130/445 : X-ray-luminous galaxy cluster RX J0142.0+2131 (Barr+, 2005)
J/ApJS/169/225 : Photometry of galaxies in the Coma cluster
(Eisenhardt+, 2007)
J/MNRAS/386/715 : Absorption-line strengths in Coma galaxies (Trager+, 2008)
J/MNRAS/392/1265 : Faint red galaxies in Coma cluster spectroscopy
(Smith+, 2009)
J/A+A/534/A109 : MCXC Meta-Catalogue X-ray galaxy Clusters
(Piffaretti+, 2011)
J/AJ/142/148 : IR observations of galaxies in the Coma cluster
(Edwards+, 2011)
J/AJ/145/77 : Imaging and spectroscopy in three galaxy clusters
(Jorgensen+, 2013)
J/ApJ/773/86 : Star-forming galaxies in ACO 2029 (Tyler+, 2013)
J/AJ/148/117 : Imaging and spectroscopy in Lynx W (Jorgensen+, 2014)
J/AJ/154/251 : Spectroscopy of galaxies in z=0.2-0.9 clusters
(Jorgensen+, 2017)
J/ApJS/229/20 : MMT/Hectospec redshift survey for Abell 2029 (Sohn+, 2017)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- Name Cluster name
19- 25 A7 --- Cluster Cluster name as mentioned in other Tables
27- 32 F6.4 --- z [0.0179/0.0903] Redshift
34- 37 I4 km/s sigma [1154/1368] Velocity dispersion (1)
39- 40 I2 km/s e_sigma [48/69] Lower limit uncertainty in sigma
42- 43 I2 km/s E_sigma [42/74] Upper limit uncertainty in sigma
45- 49 F5.3 --- b_z [0.006/0.078] Redshift lower limit used for
definition of cluster membership
51- 55 F5.3 --- B_z [0.03/0.103] Redshift upper limit used for
definition of cluster membership
57- 62 F6.3 10+37W L500 [3.456/10.676] X-ray luminosity in the
0.1-2.4 keV band within the radius R500
(in 1044erg/s) (2)
64- 68 F5.3 10+14Msun M500 [4.285/8.149] Mass within the radius R500
70- 74 F5.3 Mpc R500 [1.138/1.38] Radius within which the mean
overdensity of the cluster is 500 times the
critical density at the cluster redshift
76- 82 A7 arcmin2 Area Sample area, covering approximately
2R500x2R500
84- 87 F4.1 mag gmag [15.5/19.1] Magnitude limit of the sample in
the rest-frame g' band, corresponding
to MB,abs=-18.5 mag (Vega)
89- 93 F5.3 mag Agavg [0.023/0.555] Average Galactic extinction
in the g' band
95- 98 F4.2 mag kgavg [0.03/0.19] Average k-correction for member
galaxies on the red sequence, i.e., for
galaxies with (g'-r')=0.8
--------------------------------------------------------------------------------
Note (1): Determined from the available redshifts for the parent samples; see
Section 3.
Note (2): X-ray data are from Piffaretti et al. (2011, J/A+A/534/A109).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1[3456].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- Cluster Cluster name
9- 15 I7 --- Gal [4/2200905] Galaxy identification number
17- 25 F9.5 deg RAdeg ? Right Ascension in decimal degrees (J2000)
(only in Table 16)
27- 34 F8.5 deg DEdeg ? Declination in decimal degrees (J2000)
(only in Table 16)
36 I1 --- Sample [1/5]? Subsample number (only in Table 16) (1)
38- 41 F4.2 --- F [0/1]? Product of fracdev in the g', r' and i'
bands from SDSS, fg*fr*fi (only in
Table 16)
43- 47 F5.2 mag gmag [12.34/19.77]? SDSS g'-band total magnitude
(only in Table 16) (2)
49- 54 F6.3 mag g-r [-0.374/1.8]? SDSS g'-r' color
(only in Table 16) (2)
56- 62 F7.5 --- zspec [0.00727/0.10239]? Spectroscopic redshift
64- 68 F5.3 [km/s] logsig [1.489/2.776] Log velocity dispersion (3)
70- 74 F5.3 [km/s] e_logsig [0.004/0.203] Uncertainty in logsig
76- 79 F4.2 --- f1Gyr [0/1]? Fraction of template spectrum with
age=1Gyr (not in Tables 13,16)
81- 84 F4.2 --- f5Gyr [0/1]? Fraction of template spectrum with
age=5Gyr (not in Tables 13,16)
86- 89 F4.2 --- f15Gyr [0/1]? Fraction of template spectrum with
age=15Gyr (not in Tables 13,16)
91- 93 F3.1 --- chi2 [0.2/5.9]? The χ2 of kinematics fit
(not in Tables 13,16)
95- 98 F4.1 --- S/N43 [12.3/34.8]? Signal-to-noise ratio for
grating 43 (only in Table 13) (4)
100-103 F4.1 --- S/N47 [22.2/42.2]? Signal-to-noise ratio for
grating 47 (only in Table 13) (5)
105-109 F5.1 --- S/N [5.0/170.7]? Signal-to-noise ratio (not in
Table 13) (6)
111 I1 --- Em(OII) [1/7]? Emission line flag refering to [O II]
(only in Table 16) (7)
112 I1 --- Em(Hb) [0/1]? Emission line flag refering to Hβ
(only in Table 16) (7)
114-118 F5.2 0.1nm HzetaA [-2.54/8.35]? The HζA line index (8)
120-123 F4.2 0.1nm e_HzetaA [0.06/5.04]? Uncertainty in HzetaA (9)
125-130 F6.3 mag CN3883 [-0.015/0.528]? The CN3883 line index (8)
132-136 F5.3 mag e_CN3883 [0/0.187]? Uncertainty in CN3883 (9)
138-142 F5.2 0.1nm CaHK [0.78/34.58]? The CaHK line index (8)
144-148 F5.2 0.1nm e_CaHK [0.12/10.15]? Uncertainty in CaHK (9)
150-154 F5.3 --- D4000 [1.123/3.109]? The D4000 line index (8)
156-160 F5.3 --- e_D4000 [0.002/0.141]? Uncertainty in D4000 (9)
162-167 F6.2 0.1nm HdeltaA [-12.79/16.26]? The HδA line index (8)
169-172 F4.2 0.1nm e_HdeltaA [0.06/4.38]? Uncertainty in HdeltaA (9)
174-179 F6.3 mag CN2 [-0.017/0.269]? The CN2 line index (8)
181-185 F5.3 mag e_CN2 [0/0.121]? Uncertainty in CN2 (9)
187-191 F5.2 0.1nm G4300 [-0.78/8.29]? The G4300 line index (8)
193-196 F4.2 0.1nm e_G4300 [0.05/3.52]? Uncertainty in G4300 (9)
198-203 F6.2 0.1nm HgammaA [-10.09/6.97]? The HγA line index (8)
205-208 F4.2 0.1nm e_HgammaA [0.06/3.04]? Uncertainty in HgammaA (9)
210-214 F5.2 0.1nm Fe4383 [-5.85/8.8]? The Fe4383 line index (8)
216-219 F4.2 0.1nm e_Fe4383 [0.07/4.51]? Uncertainty in Fe4383 (9)
221-225 F5.2 0.1nm C4668 [-4.17/10.87]? The C4668 line index (8)
227-230 F4.2 0.1nm e_C4668 [0.09/3.37]? Uncertainty in C4668 (9)
232-237 F6.2 0.1nm Hbeta [-29.44/6.25]? The Hβ line index (8)
239-242 F4.2 0.1nm e_Hbeta [0.04/1.47]? Uncertainty in Hbeta (9)
244-249 F6.2 0.1nm HbetaG [-30.21/5.84]? The HβG line index (8)
251-254 F4.2 0.1nm e_HbetaG [0.02/1.06]? Uncertainty in HbetaG (9)
256-259 F4.2 0.1nm Mgb [0.22/6.32]? The Mgb line index (8)
261-264 F4.2 0.1nm e_Mgb [0.04/1.24]? Uncertainty in Mgb (9)
266-270 F5.2 0.1nm Fe5270 [-0.99/5.36]? The Fe5270 line index (8)
272-275 F4.2 0.1nm e_Fe5270 [0.04/1.2]? Uncertainty in Fe5270 (9)
277-281 F5.2 0.1nm Fe5335 [-0.4/6.56]? The Fe5335 line index (8)
283-286 F4.2 0.1nm e_Fe5335 [0.05/1.35]? Uncertainty in Fe5335 (9)
--------------------------------------------------------------------------------
Note (1): Subsample number as follows:
1 = Passive bulge-dominated brighter than analysis limit;
2 = Emission-line bulge-dominated brighter than analysis limit;
3 = Bulge-dominated fainter than analysis limit;
4 = Disk-dominated brighter than analysis limit;
5 = Disk-dominated fainter than analysis limit.
Note (2): Corrected for Galactic extinction and corrected to rest frame.
Note (3): Corrected to a standard size aperture equivalent to a circular
aperture with a diameter of 3.4" at the distance of the Coma cluster.
In Table 16, corrected for systematic effects, see Appendix Eq. A1 and A2.
Note (4): In the wavelength interval 4100-4750Å. Per Angstrom in the rest
frame of the galaxy.
Note (5): In the wavelength interval 4900-5400Å. Per Angstrom in the rest
frame of the galaxy.
Note (6): In the wavelength interval 4100-5250Å for Tables 14,15.
Per Angstrom in the rest frame of the galaxy.
Note (7): Emission line flag as follows:
0 = No emission;
1 = Emission;
7 = Line outside spectral coverage.
Note (8): The indices have been corrected for galaxy velocity dispersion and
aperture corrected.
Note (9): Determined from the local S/N.
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Byte-by-byte Description of file: table18.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- Cluster Cluster name
9- 10 I2 --- Ngal [4/19] Number of galaxies in average
12- 16 F5.3 [km/s] logsigavg [1.872/2.541] Average of logarithm of
velocity dispersion
18- 22 F5.3 [km/s] e_logsigavg [0.002/0.014] Uncertainty in logsigavg
24- 28 F5.3 mag CN3883avg [0.17/0.308] Average CN3883 index
30- 34 F5.3 mag e_CN3883avg [0.003/0.044] Uncertainty in CN3883avg
36- 41 F6.3 mag HdAHgA [-0.126/-0.048] Average combination
index of HδA and HγA
43- 47 F5.3 mag e_HdAHgA [0.002/0.014] Uncertainty in HdAHgA
49- 53 F5.3 [0.1nm] log(Fe4383)avg [0.513/0.74] Average logarithm of
Fe4383 index
55- 59 F5.3 [0.1nm] e_log(Fe4383)avg [0.007/0.101] Uncertainty in
log(Fe4383)avg
61- 65 F5.3 [0.1nm] log(C4668)avg [0.701/0.933] Average logarithm of
C4668 index
67- 71 F5.3 [0.1nm] e_log(C4668)avg [0.01/0.085] Uncertainty in
log(C4668)avg
73- 77 F5.3 [0.1nm] log(HbetaG)avg [0.217/0.373] Average logarithm of
HβG index
79- 83 F5.3 [0.1nm] e_log(HbetaG)avg [0.007/0.025] Uncertainty in
log(HbetaG)avg
85- 89 F5.3 [0.1nm] log(Mgb)avg [0.514/0.738] Average logarithm of Mgb
index
91- 95 F5.3 [0.1nm] e_log(Mgb)avg [0.005/0.019] Uncertainty in
log(Mgb)avg
97-101 F5.3 [0.1nm] log(Fe)avg [0.389/0.478] Average logarithm of <Fe>
index
103-107 F5.3 [0.1nm] e_log(Fe)avg [0.006/0.029] Uncertainty in log(Fe)avg
109-112 F4.2 [Gyr] logAge [0.6/1.23] Logarithm of the age
114-117 F4.2 [Gyr] e_logAge [0.01/0.16] Uncertainty in logAge
119-123 F5.2 [Sun] [M/H] [-0.13/0.47] Metallicity
125-128 F4.2 [Sun] e_[M/H] [0.02/0.16] Uncertainty in [M/H]
130-133 F4.2 [Sun] [CN/Fe] [0/0.5] Abundance ratio [CN/Fe]
135-138 F4.2 [Sun] e_[CN/Fe] [0.02/0.25] Uncertainty in [CN/Fe]
140-143 F4.2 [Sun] [Mg/Fe] [0.14/0.42] Abundance ratio [Mg/Fe]
145-148 F4.2 [Sun] e_[Mg/Fe] [0.01/0.07] Uncertainty in [Mg/Fe]
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 09-Apr-2019