J/MNRAS/531/3973 SPT-SZ MCMF catalog (Klein+, 2024)
SPT-SZ MCMF: an extension of the SPT-SZ catalogue over the DES region.
Klein M., Mohr J.J., Bocquet S., Aguena M., Allen S.W., Alves O.,
Ansarinejad B., Ashby M.L.N., Bacon D., Bayliss M., Benson B.A.,
Bleem L.E., Brodwin M., Brooks D., Bulbul E., Burke D.L., Canning R.E.A.,
Carlstrom J.E., Carnero Rosell A., Carretero J., Chang C.L., Conselice C.,
Costanzi M., Crites A.T., Da Costa L.N., Pereira M.E.S., Davis T.M.,
De Vicente J., Desai S., De Haan T., Dobbs M.A., Doel P., Ferrero I.,
Flores A.M., Frieman J., George E.M., Giannini G., Gladders M.D.,
Gonzalez A.H., Grandis S., Gruen D., Gruendl R.A., Gutierrez G.,
Halverson N.W., Hinton S.R., Holder G.P., Hollowood D.L., Holzapfel W.L.,
Honscheid K., Hrubes J.D., Huang N., James D.J., Khullar G., Kim K.,
Knox L., Kraft R., Keruzore F., Lee A.T., Luong-Van D., Mahler G.,
Mantz A., Marrone D.P., Marshall J.L., Mcdonald M., Mcmahon J.J.,
Mena-Fernandez J., Menanteau F., Meyer S.S., Miquel R., Myles J., Padin S.,
Pieres A., Plazas Malagon A.A., Pryke C., Reichardt C.L., Reil K.,
Roberson J., Romer A.K., Romero C., Ruhl J.E., Saliwanchik B.R.,
Salvati L., Sanchez E., Saro A., Schaffer K.K., Schrabback T.,
Schubnell M., Sevilla-Noarbe I., Sharon K., Shirokoff E., Smith M.,
Somboonpanyakul T., Stalder B., Stanford S.A., Stark A.A., Strazzullo V.,
Suchyta E., Swanson M.E.C., Tarle G., To C., Vanderlinde K., Vieira J.D.,
Von Der Linden A., Weaverdyck N., Williamson R., Wiseman P., Young M.
<Mon. Not. R. Astron. Soc. 531, 3973-3990>
=2024MNRAS.531.3973K 2024MNRAS.531.3973K (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Redshifts ; Surveys ;
Spectra, millimetric/submm
Keywords: galaxies: clusters: general; galaxies: clusters: intracluster medium
galaxies: distances and redshifts
Abstract:
We present an extension to a Sunyaev-Zel'dovich Effect (SZE) selected
cluster catalogue based on observations from the South Pole Telescope
(SPT); this catalogue extends to lower signal to noise than the
previous SPT-SZ catalogue and therefore includes lower mass clusters.
Optically derived redshifts, centres, richnesses, and morphological
parameters together with catalogue contamination and completeness
statistics are extracted using the multicomponent matched filter
(MCMF) algorithm applied to the S/N>4 SPT-SZ candidate list and the
Dark Energy Survey (DES) photometric galaxy catalogue. The main
catalogue contains 811 sources above S/N=4, has 91 per cent purity,
and is 95 per cent complete with respect to the original SZE
selection. It contains in total 50 per cent more clusters and twice as
many clusters above z=0.8 in comparison to the original SPT-SZ
sample. The MCMF algorithm allows us to define subsamples of the
desired purity with traceable impact on catalogue completeness. As an
example, we provide two subsamples with S/N>4.25 and S/N>4.5 for
which the sample contamination and cleaning-induced incompleteness are
both as low as the expected Poisson noise for samples of their size.
The subsample with S/N>4.5 has 98 per cent purity and 96 per cent
completeness and is part of our new combined SPT cluster and DES
weak-lensing cosmological analysis. We measure the number of false
detections in the SPT-SZ candidate list as function of S/N, finding
that it follows that expected from assuming Gaussian noise, but with a
lower amplitude compared to previous estimates from simulations.
Description:
This is the SPT-SZ MCMF catalog. The baseline catalogue has a purity
of 91% and contains in total 50% more clusters than the previous
SPT-SZ catalogue. The contamination estimator fcont allows for
additional control of the level of catalog contamination and higher
purities can be derived by imposing a stricter upper limit in f_cont
(e.g. fcont<0.1 for ∼95% purity). For more details please see the
paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 638 811 SPT-SZ MCMF catalogue
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See also:
J/ApJ/779/61 : SPT-SZ survey point sources at 95, 150 + 220GHz (Mocanu+, 2013)
J/ApJ/878/55 : SPT-SZ clusters with optical + X-ray data (Bocquet+, 2019)
J/ApJ/900/55 : The SPT-SZ catalog at 95, 150, and 220GHz (Everett+, 2020)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- SPT Cluster name, SPT-CLJHHMM-DDMM
(SPT_ID)
18- 27 F10.6 deg RAdeg Right ascension of SZ centre (J2000)
(RA)
29- 36 F8.4 deg DEdeg Declination of SZ centre (J2000)
(DEC)
38- 54 F17.14 --- Xi Highest detection significance in the
filtered map (XI)
56- 59 F4.2 arcmin theta Best fit core radius in arcmin
(THETA)
61- 74 A14 --- Field Name of subfield (FIELD)
76- 84 F9.7 --- ScaleFactor Scale factor between different
subfields (SCALE_FACTOR)
86-102 F17.15 --- zBest MCMF photo-z of best counterpart
(Z_BEST)
104-120 F17.15 --- zspec ?=- Spectroscopic redshift (z_spec)
122-129 F8.6 --- e_zBest Photo-z uncertainty of zBest
(EZ_BEST)
131-147 F17.15 --- fcontBest Contamination estimator of best
counterpart (FCONTBEST)
149-165 F17.13 --- LambdaBest Richness of best counterpart
(LAMBDA_BEST)
167-174 F8.5 --- e_LambdaBest Uncertainty on richness of best
counterpart (ELAMBDA_BEST)
176-190 F15.11 deg RAMdeg ?=-1 Right ascension of MCMF centre
(RA_MCMF)
192-206 F15.11 deg DEMdeg ?=-1 Declination of MCMF centre
(DEC_MCMF)
208-224 F17.14 10+14Msun M500Best M500 marginalise over sys.
uncertainties as in see Bocquet et
al., 2019ApJ...878...55B 2019ApJ...878...55B,
Cat. J/ApJ/878/55 (M500BEST)
226-242 F17.15 10+14Msun E_M500Best Upper uncertainty on M500Best
(M500BEST_UP)
244-260 F17.15 10+14Msun e_M500Best Lower uncertainty on M500Best
(M500BEST_LO)
262-278 F17.14 10+14Msun M500BestNosys M500 using fixed cosmo & scaling
relations as in Bocquet et al.,
2019ApJ...878...55B 2019ApJ...878...55B,
Cat. J/ApJ/878/55 (MBESTNOSYS)
280-296 F17.15 10+14Msun E_M500BestNosys Upper uncertainty on M500BEST_nosys
(MBESTNOSYS_UP)
298-314 F17.15 10+14Msun e_M500BestNosys Lower uncertainty on M500BEST_nosys
(MBESTNOSYS_LO)
316-325 F10.6 deg RABdeg Right ascension of MCMF based BCG
candidate (RA_BCG)
327-336 F10.6 deg DEBdeg Declination of MCMF based BCG
candidate (DEC_BCG)
338 I1 --- f_zBest [0/1] DES MCMF or high-z (WISE)
redshift (DESORHZ) (1)
340-347 F8.6 --- MaskFrac60 Mask fraction within 1 arcmin
(MASKFRAC_60)
349-356 F8.6 --- MaskFrac120 Mask fraction within 2 arcmin
(MASKFRAC_120)
358-365 F8.6 --- MaskFrac180 Mask fraction within 3 arcmin
(MASKFRAC_180)
367-385 F19.15 --- alpha ?=-99 Dynamical state estimator:
α asymmetry factor (ALPHA)
387-405 F19.15 --- delta ?=-99 Dynamical state estimator:
δ cluster morphology estimator
(DELTA)
407-425 F19.15 --- beta ?=-99 Dynamical state estimator:
β ridge flatness (BETA)
427-445 F19.15 --- epsilon ?=-99 Dynamical state estimator:
ε ellipticity (ELLIP)
447-465 F19.15 --- ModCentOff ?=-99 Dynamical state estimator:
centre shift of 2D model fit
(MODCENTOFF)
467-485 F19.15 --- MassRat ?=-99 Dynamical state estimator:
richness ratio between subclumps
(MASSRAT)
487-502 F16.12 --- GalOff ?=-99 Dynamical state estimator:
offset [r_500] between subclumps
(GALOFF)
504-523 F20.15 Mpc CentOffOSZMpc Offset between MCMF and SZ center
in Mpc (CENTOFFOSZMPC)
525-532 F8.6 --- zDES1 Redshift first DES MCMF counterpart
(ZDES1)
534-542 F9.6 --- zDES2 Redshift second DES MCMF counterpart
(ZDES2)
544-553 F10.6 --- LambdaDES1 Richness first DES MCMF counterpart
(LAMBDADES1)
555-563 F9.6 --- LambdaDES2 Richness second DES MCMF counterpart
(LAMBDADES2)
565-581 F17.15 --- fcontDES1 Contamination estimator first DES
MCMF counterpart (FCONTDES_1)
583-600 F18.15 --- fcontDES2 Contamination estimator second DES
MCMF counterpart (FCONTDES_2)
602-619 F18.15 --- fcontBestXI425 Contamination estimator of best
counterpart for Ξ>4.25 selection
(FCONTBESTXI425)
621-638 F18.15 --- fcontBestXI45 Contamination estimator of best
counterpart for Ξ>4.5 selection
(FCONTBESTXI45)
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Note (1): Flag if redshift is from DES or WISE-based high-z MCMF
0 = DES
1 = WISE
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Acknowledgements:
Matthias Klein, matthias.klein(at)physik.lmu.de
(End) Patricia Vannier [CDS] 08-Sep-2024