J/ApJ/853/36 Spectroscopy obs. of 20 Planck gal. cluster cand. (Amodeo+, 2018)
Spectroscopic confirmation and velocity dispersions for 20 Planck galaxy
clusters at 0.16 < z < 0.78.
Amodeo S., Mei S., Stanford S.A., Lawrence C.R., Bartlett J.G., Stern D.,
Chary R.-R., Shim H., Marleau F.R., Melin J.-B., Rodriguez-Gonzalvez C.
<Astrophys. J., 853, 36 (2018)>
=2018ApJ...853...36A 2018ApJ...853...36A
ADC_Keywords: Clusters, galaxy; Spectra, optical; Redshifts; Velocity dispersion
Keywords: cosmology: observations ; galaxies: clusters: general ;
galaxies: distances and redshifts
Abstract:
We present Gemini and Keck spectroscopic redshifts and velocity
dispersions for 20 clusters detected via the Sunyaev-Zel'dovich (SZ)
effect by the Planck space mission, with estimated masses in the range
2.3x1014M☉<M500Pl<9.4x1014M☉. Cluster members were
selected for spectroscopic follow-up with Palomar, Gemini, and Keck
optical and (in some cases) infrared imaging. Seven cluster redshifts
were measured for the first time with this observing campaign,
including one of the most distant Planck clusters confirmed to date,
at z=0.782±0.010, PSZ2 G085.95+25.23. The spectroscopic redshift
catalogs of members of each confirmed cluster are included as online
tables. We show the galaxy redshift distributions and measure the
cluster velocity dispersions. The cluster velocity dispersions
obtained in this paper were used in a companion paper to measure the
Planck mass bias and to constrain the cluster velocity bias.
Description:
The Gemini imaging and spectroscopic follow-up was performed with
GMOS-N and GMOS-S at the Gemini-North and Gemini-South Telescopes,
respectively, in the programs GN-2011A-Q-119, GN-2011B-Q-41, and
GS-2012A-Q-77 (P.I. J.G. Bartlett).
We obtained spectroscopy of PSZ2 G085.95+25.23 on the nights of UT
2013 October 4-5 using the dual-beam Low Resolution Imaging
Spectrometer (LRIS) on the Keck I telescope atop Maunakea.
The Palomar/LFC,WIRC optical and infrared imaging, used to select
cluster members, was obtained with a dedicated Planck follow-up
program (PI: C. Lawrence) that included several runs (2010B to 2012B).
Our Palomar sample is presented in Table 4.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 79 20 Spectroscopically confirmed cluster sample
table3.dat 128 21 Results of the spectroscopical analysis
table4.dat 84 53 Planck clusters observed with the Palomar telescope
table5.dat 56 412 Catalog of galaxies detected for the 20 clusters
(compilation of the 20 FITS files by CDS)
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See also:
VIII/88 : Planck Early Release Compact Source Catalogue (Planck, 2011)
VIII/91 : Planck Catalog of Compact Sources Release 1 (Planck, 2013)
J/ApJS/199/34 : Clusters of galaxies in SDSS-III (Wen+, 2012)
J/ApJ/785/104 : redMaPPer. I. Algorithm applied to SDSS DR8 (Rykoff+, 2014)
J/A+A/580/A95 : Planck/AMI Sunyaev-Zel'dovich measurements (Perrott+, 2015)
J/A+A/581/A14 : Updated Planck catalogue PSZ1 (Planck+, 2015)
J/ApJ/829/44 : NGVS. XX. RedGOLD background galaxy clusters (Licitra+, 2016)
J/A+A/592/A48 : Annotations to the 2nd Planck cluster catalog (Khatri, 2016)
J/A+A/594/A27 : Planck Sunyaev-Zeldovich sources (PSZ2) (Planck+, 2016)
J/A+A/586/A139 : Opt. ident. and redshifts of Planck SZ sources (Planck+, 2016)
J/PAZh/43/559 : Planck galaxy cluster catalogue extension (Burenin, 2017)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Cl Cluster name (1)
19- 21 A3 --- f_Cl Flag on Cl (2)
23- 30 F8.4 deg RAdeg Right ascension in decimal degrees (J2000) (3)
32- 39 F8.4 deg DEdeg Declination in decimal degrees (J2000) (3)
41- 43 A3 --- Filt Filter used for imaging (g,r,i)
45- 48 I4 s Exp [900/3600] Spectroscopic observing time
50- 50 I1 --- N [1/2] Number of mask
52- 79 A28 --- Run Observing run(s) including pre-imaging
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Note (1): PSZ2 G085.95+25.33 was a misprint for PSZ2 G085.95+25.23;
corrected at CDS.
Note (2): Flag as follows:
a = Also observed at Palomar, see Table 4.
b = Target PLCK G147.32-16.59 is confirmed in the XMM-Newton cluster
validation (Planck Collaboration et al. 2013A&A...550A.130P 2013A&A...550A.130P), but it is
not included in the two Planck catalogs of SZ sources released so far.
Note (3): RA and DEC of the optical cluster center.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Cl Cluster name
20 A1 --- n_Cl a: Two structures observed, not confirmed as
clusters (see the text and Figure 5)
22- 26 F5.3 --- zsp [0.16/0.8] Measured spectroscopic redshift
28- 32 F5.3 --- e_zsp [0.001/0.03] zsp uncertainty
34 A1 --- f_zsp [+] +: new redshift
36- 41 F6.4 --- zDR14 [0.3/0.5]? Redshift estimates (1)
43- 48 F6.4 --- e_zDR14 [0.0001/0.0003]? zDR14 uncertainty
50- 51 I2 --- Ntot [10/49] Total number of galaxies with
measured redshifts in the cluster field
53- 54 I2 --- NGal [8/46] Number of confirmed member galaxies
56- 59 I4 km/s SigBI [801/1644]? Measured velocity dispersion
using the Biweight method
(Beers+ 1990AJ....100...32B 1990AJ....100...32B)
61- 63 I3 km/s e_SigBI [109/493]? Negative uncertainty on SigBI
65- 67 I3 km/s E_SigBI [164/852]? Positive uncertainty on SigBI
69- 72 I4 km/s SigDR14 [861/1779]? Measured velocity dispersion
including SDSS DR14 data
74- 76 I3 km/s e_SigDR14 [87/216]? Negative uncertainty on SigDR14
78- 80 I3 km/s E_SigDR14 [111/327]? Positive uncertainty on SigDR14
82- 85 I4 km/s SigG [746/1636]? Measured velocity dispersion
using the Grapper method
(Beers+ 1990AJ....100...32B 1990AJ....100...32B)
87- 89 I3 km/s e_SigG [64/262]? Negative uncertainty on SigG
91- 93 I3 km/s E_SigG [152/460]? Positive uncertainty on SigG
95- 98 F4.1 --- S/N [2.1/11.5]? Signal-to-noise ratio
100 I1 --- Det [1/3]? Number of detection method from
Planck Collaboration (2016, J/A+A/594/A27)
102-104 F3.1 10+14Msun M500 [2.3/9.4]? The Planck mass proxy (2)
106-108 F3.1 10+14Msun e_M500 [0.5/1]? Negative uncertainty on M500
110-112 F3.1 10+14Msun E_M500 [0.5/0.9]? Positive uncertainty on M500
114-117 F4.2 --- KSg [0.3/0.99] Kolmogorov-Smirnov (K-S) for the
probability that the redshift distributions
are Gaussian
119-122 F4.2 --- SWg [0.02/0.97] Shapiro-Wilk (S-W) statistic for
a Gaussian distribution
124-128 F5.3 --- KSu [0.004/0.98] Kolmogorov-Smirnov (K-S) test
for a uniform distribution
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Note (1): Redshift estimates obtained including the available redshifts in the
SDSS DR14.
Note (2): The Planck mass proxy, as reported in the PSZ2 (J/A+A/594/A27) catalog
(we calculated these numbers for the two objects not listed in
the PSZ2 catalog).
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1-18 A18 --- Cl Cluster name
19 A1 --- f_Cl Flag on Cl (1)
21-28 F8.4 deg RAdeg Right ascension in decimal degrees (J2000)
30-37 F8.4 deg DEdeg Declination in decimal degrees (J2000)
39-54 A16 --- Filter Filter(s)
56-64 A9 --- Inst Instrument
66-84 A19 --- Run Date(s) of observing run(s)
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Note (1):
a = Target PLCK G147.32-16.59 is confirmed in the XMM-Newton cluster
validation (Planck Collaboration et al. 2013A&A...550A.130P 2013A&A...550A.130P), but it is
not included in the two Planck catalogs of SZ sources released so far.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Cl Cluster name
20- 21 I2 --- ID [1/46] Galaxy ID within Cluster
23- 31 F9.6 deg RAdeg Right ascension in decimal degrees (J2000)
33- 42 F10.6 deg DEdeg Declination in decimal degrees (J2000)
44- 49 F6.4 --- zsp [0.16/0.84] Spectroscopic redshift
51- 56 F6.4 --- e_zsp [0.0001/0.003] zsp uncertainty
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 21-Sep-2018