J/ApJ/853/36  Spectroscopy obs. of 20 Planck gal. cluster cand.  (Amodeo+, 2018)
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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
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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
    2.3x10^14^M_{sun}_<M_500_^Pl^<9.4x10^14^M_{sun}_. 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), 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)
  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)
  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
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 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), 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

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(End)                                       Emmanuelle Perret [CDS]  21-Sep-2018