J/MNRAS/526/3757 RASS-MCMF catalog (Klein+, 2023)
RASS-MCMF: a full-sky X-ray selected galaxy cluster catalogue.
Klein M., Hernandez-lang D., Mohr J.J., Bocquet S., Singh A.
<Mon. Not. R. Astron. Soc. 526, 3757-3778>
=2023MNRAS.526.3757K 2023MNRAS.526.3757K (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Redshifts ; Surveys ; X-ray sources ;
Spectra, millimetric/submm
Keywords: methods: observational - catalogues; galaxies: clusters: general -
galaxies: clusters: intracluster medium -
galaxies: distances and redshifts
Abstract:
We present the RASS-MCMF catalogue of 8449 X-ray selected galaxy
clusters over 25000deg2 of extragalactic sky. The accumulation of
deep multiband optical imaging data, the development of the
Multi-Component Matched Filter (MCMF) cluster confirmation algorithm,
and the release of the DESI Legacy Survey DR10 catalogue makes it
possible - for the first time, more than 30yr after the launch of the
ROSAT X-ray satellite - to identify the majority of the galaxy
clusters detected in the second ROSAT All-Sky-Survey (RASS) source
catalogue (2RXS). The resulting 90 per cent pure RASS-MCMF catalogue
is the largest intracluster medium (ICM)-selected cluster sample to
date. RASS-MCMF probes a large dynamic range in cluster mass spanning
from galaxy groups to the most massive clusters. The cluster redshift
distribution peaks at z∼0.1 and extends to redshifts z∼1. Out to
z∼0.4, the RASS-MCMF sample contains more clusters per redshift
interval (dN/dz) than any other ICM-selected sample. In addition to
the main sample, we present two subsamples with 6912 and 5506
clusters, exhibiting 95 per cent and 99 per cent purity, respectively.
We forecast the utility of the sample for a cluster cosmological
study, using realistic mock catalogues that incorporate most
observational effects, including the X-ray exposure time and
background variations, the existence likelihood selection and the
impact of the optical cleaning with the algorithm MCMF. Using
realistic priors on the observable-mass relation parameters from a
DES-based weak lensing analysis, we estimate the constraining power of
the RASS-MCMFxDES sample to be of 0.026, 0.033, and 0.15 (1σ)
on the parameters {OMETA}m, σ8, and w, respectively.
Description:
This is the RASS-MCMF cluster catalog. It is based on the Second ROSAT
All-Sky Survey source catalog (2RXS) and therefore represents an X-ray
selected cluster catalog. Optical confirmation was done using the MCMF
method and optical data from the DESI Legacy Survey DR10. The baseline
catalog has an estimated purity of 90%. The purity can be easily
increased to any preferred value by imposing an upper limit in
fcont1 (fcont1<0.11 for 95% purity or fcont1<0.06 for 99%).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 696 8449 RASS-MCMF catalogue
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See also:
J/A+A/588/A103 : Second ROSAT all-sky survey (2RXS) source catalog
(Boller+, 2016)
J/MNRAS/473/4937 : AllWISE ctp to ROSAT/2RXS & XMMSLEW2 catalogs
(Salvato+, 2018)
J/A+A/664/A105 : Stellar content of the ROSAT all-sky survey (Freund+, 2022)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 22 A22 --- Name Cluster name, RASS-CL JHHMMSS+DDMM.m (NAME)
24- 37 F14.10 deg RAdeg Right ascension of optical centre (J2000)
(RA_OPT)
39- 52 F14.10 deg DEdeg Declination of optical centre (J2000)
(DEC_OPT)
54 I1 --- CentType [1/4] Center type (CENT_TYPE) (1)
56- 63 F8.6 --- zph1 Photo-z of best counterpart (Z_1)
65- 73 F9.6 --- zph2 Photo-z of 2nd best counterpart (Z_2)
75- 83 F9.6 --- zph3 Photo-z of 3rd best counterpart (Z_3)
85-102 F18.15 --- zsp1 Spec-z best opt. counterpart (ZSPEC1)
104-122 F19.14 --- Lambda1 Richness of best counterpart (LAMBDA_1)
124-143 F20.15 --- Lambda2 Richness of 2nd best counterpart (LAMBDA_2)
145-162 F18.15 --- Lambda3 Richness of 3rd best counterpart (LAMBDA_3)
164-181 F18.15 --- e_zph1 [] Photo-z uncertainty best counterpart
(EZ_1)
183-200 F18.15 --- e_zph2 []?=- Photo-z uncertainty 2nd best
counterpart (EZ_2)
202-219 F18.15 --- e_zph3 []?=- Photo-z uncertainty 3rd best
counterpart (EZ_3)
221-239 F19.15 --- e_Lambda1 Richness uncertainty best counterpart
(ELAMBDA_1)
241-259 F19.15 --- e_Lambda2 [] Richness uncertainty 2nd best counterpart
(ELAMBDA_2)
261-278 F18.15 --- e_Lambda3 [] Richness uncertainty 3rd best counterpart
(ELAMBDA_3)
280-287 F8.6 --- fcont1 Contamination estimator of best counterpart
(FCONT1)
289-297 F9.6 --- fcont2 Contamination estimator of 2nd best
counterpart (FCONT2)
299-307 F9.6 --- fcont3 Contamination estimator of 3rd best
counterpart (FCONT3)
309-320 E12.6 Msun M500-1 X-ray based mass estimate (MX) of best
counterpart (M500_1)
322-329 F8.6 --- pany ?=- For each entry in the X-ray catalogue,
the probability that there is a counterpart
from Salvato et al. (2018MNRAS.473.4937S 2018MNRAS.473.4937S,
Cat. J/MNRAS/473/4937) (P_ANY)
331-338 F8.6 --- pi ?=- Relative probability of the match from
Salvato et al. (2018MNRAS.473.4937S 2018MNRAS.473.4937S,
Cat. J/MNRAS/473/4937) (P_I)
340 I1 --- GRZ [0/1] LS DR10 GRZ footprint (GRZ)
342 I1 --- GRZ-N [0/1] LS DR10 GRZ northern footprint (GRZ_N)
344 I1 --- GI [0/1] LS DR10 GI footprint (GI)
346-351 F6.4 --- Pstellar [0/1]?=- Stellar probability from
Freund et al. (2022A&A...664A.105F 2022A&A...664A.105F,
Cat. J/A+A/664/A105) (PSTELLAR)
353 I1 --- LikeStellar [0/1] Likely stellar contaminant
(LIKELY_STELLAR)
355 I1 --- LikeQSO [0/3] Likely QSO contaminant (LIKELY_QSO)
357-373 F17.15 --- loglMass log10(1014lambda/MX) (LGLAMMASS)
375-391 F17.15 --- MaskFrac120 DR10 Mask fraction within 120 arcsec radius
(MASKFRAC_120)
393 A1 --- P90 [T] in 90 percent purity sample (P90)
395 A1 --- P95 [TF] in 95 percent purity sample (P95)
397 A1 --- P99 [TF] in 99 percent purity sample (P99)
399-419 A21 --- 2RXS 2RXS source name, 2RXS JHHMMSS.s+DDMMSS
(2RXS_NAME)
421-429 F9.6 ct/s 2RXSCR Original 2RXS count rate (2RXS_RATE)
431-445 F15.11 deg RAXdeg 2RXS (X-ray) right ascension (j2000)
(2RXSRADEG)
447-461 F15.11 deg DEXdeg 2RXS (X-ray) declination (J2000)
(2RXSDECDEG)
463-470 F8.6 ct/s e_2RXSCR 2RXS uncertainty on count rate (2RXS_ERATE)
472-481 F10.6 deg GLON 2RXS galactic coordinate LII (LII)
483-490 F8.4 deg GLAT 2RXS galactic coordinate BII (BII)
492-509 F18.15 ct/s CRin Count rate including detections from
multiple detections (RATE)
511-521 F11.5 --- ExiML 2RXS existence likelihood (EXI_ML)
523-533 F11.6 --- ExtML 2RXS extent likelihood (EXT_ML)
535-542 F8.6 pix Ext 2RXS extent (in pixels) (EXT)
544-551 F8.6 pix e_Ext 2RXS uncertainty on extent (EXTERR)
553-562 F10.4 s Texp 2RXS exposure time (EXPOSURE)
564-573 F10.5 ct Cts 2RXS source counts (CTS)
575-583 F9.6 ct e_Cts 2RXS source count uncertainty (CERR)
585-593 F9.6 ct/pix BGR 2RXS background in counts per pixel (BGR)
595 I1 --- SFlag 2RXS screening flag (S_FLAG)
597-608 E12.6 --- M500-12RXS X-ray based mass estimate (MX) using
2RXS rate (M50012RXS)
610-627 F18.15 ct/s CR-COG X-ray count rate using curve of growth
(RATE_COG)
629-640 E12.6 Msun M500-1COGXR X-ray based mass estimate (MX) based on
CR-COG (M5001COG_XR)
642-659 F18.15 --- Conv2-1-1 Conversion to ACT-MCMF richness definition
(GRZW1W2TOGRZW1_1)
661-678 F18.15 --- Conv2-1-2 Conversion to ACT-MCMF richness definition
for 2nd best counterpart
(GRZW1W2TOGRZW1_2)
680-696 F17.15 --- Conv2-1-3 Conversion to ACT-MCMF richness definition
for 3rd best counterpart
(GRZW1W2TOGRZW1_3)
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Note (1): Type of optical centre as follows:
1 = GRZ galaxy density
2 = GRZ BCG
3 = GI galaxy density
4 = GI BCG
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Acknowledgements:
Matthias Klein, matthias.klein(at)physik.lmu.de
(End) Patricia Vannier [CDS] 03-Sep-2024