2018MNRAS.474.3324K

Query : 2018MNRAS.474.3324K

2018MNRAS.474.3324K - Mon. Not. R. Astron. Soc., 474, 3324-3343 (2018/March-1)

A multicomponent matched filter cluster confirmation tool for eROSITA: initial application to the RASS and DES-SV data sets.

KLEIN M., MOHR J.J., DESAI S., ISRAEL H., ALLAM S., BENOIT-LEVY A., BROOKS D., BUCKLEY-GEER E., CARNERO ROSELL A., CARRASCO KIND M., CUNHA C.E., DA COSTA L.N., DIETRICH J.P., EIFLER T.F., EVRARD A.E., FRIEMAN J., GRUEN D., GRUENDL R.A., GUTIERREZ G., HONSCHEID K., JAMES D.J., KUEHN K., LIMA M., MAIA M.A.G., MARCH M., MELCHIOR P., MENANTEAU F., MIQUEL R., PLAZAS A.A., REIL K., ROMER A.K., SANCHEZ E., SANTIAGO B., SCARPINE V., SCHUBNELL M., SEVILLA-NOARBE I., SMITH M., SOARES-SANTOS M., SOBREIRA F., SUCHYTA E., SWANSON M.E.C., TARLE G. (The DES Collaboration)

Abstract (from CDS):

We describe a multicomponent matched filter (MCMF) cluster confirmation tool designed for the study of large X-ray source catalogues produced by the upcoming X-ray all-sky survey mission eROSITA. We apply the method to confirm a sample of 88 clusters with redshifts 0.05 < z < 0.8 in the recently published 2RXS catalogue from the ROSAT All-Sky Survey (RASS) over the 208 deg2 region overlapped by the Dark Energy Survey (DES) Science Verification (DES-SV) data set. In our pilot study, we examine all X-ray sources, regardless of their extent. Our method employs a multicolour red sequence (RS) algorithm that incorporates the X-ray count rate and peak position in determining the region of interest for follow-up and extracts the positionally and colour-weighted optical richness λMCMF as a function of redshift for each source. Peaks in the λMCMF-redshift distribution are identified and used to extract photometric redshifts, richness and uncertainties. The significances of all optical counterparts are characterized using the distribution of richnesses defined along random lines of sight. These significances are used to extract cluster catalogues and to estimate the contamination by random superpositions of unassociated optical systems. The delivered photometric redshift accuracy is δz/(1 + z) = 0.010. We find a well-defined X-ray luminosity-λMCMF relation with an intrinsic scatter of δln (λMCMF|Lx) = 0.21. Matching our catalogue with the DES-SV redMaPPer catalogue yields good agreement in redshift and richness estimates; comparing our catalogue with the South Pole Telescope (SPT) selected clusters shows no inconsistencies. SPT clusters in our data set are consistent with the high-mass extension of the RASS-based λMCMF-mass relation.

Abstract Copyright: © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: intracluster medium - galaxies: distances and redshifts - X-rays: galaxies: clusters

VizieR on-line data: <Available at CDS (J/MNRAS/474/3324): table1.dat>

Nomenclature: Table 1: [KMD2018] 2RXC JHHMM.m+DDMM N=89.

Simbad objects: 93

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Number of rows : 93
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7058 0
2 [KMD2018] 2RXC J0418.3-5850 ClG 04 18 29.5 -58 50 56           ~ 1 0
3 1RXS J042055.4-524633 ClG 04 20 56.4 -52 46 52           ~ 1 0
4 [KMD2018] 2RXC J0423.5-5432 ClG 04 23 52.8 -54 32 46           ~ 1 0
5 [KMD2018] 2RXC J0424.3-5557 ClG 04 24 27.1 -55 57 18           ~ 1 0
6 [KMD2018] 2RXC J0425.4-6143 ClG 04 25 44.2 -61 43 52           ~ 1 0
7 [KMD2018] 2RXC J0426.2-5517 ClG 04 26 23.5 -55 18 00           ~ 1 0
8 1RXS J042641.6-454526 ClG 04 26 43.9 -45 45 25           ~ 1 0
9 1RXS J042646.4-600304 ClG 04 26 47.0 -60 03 00           ~ 1 0
10 1RXS J042842.2-534937 ClG 04 28 42.0 -53 49 41           ~ 1 0
11 1RXS J042859.9-601916 ClG 04 28 59.5 -60 19 16           ~ 1 0
12 [KMD2018] 2RXC J0429.1-6020 ClG 04 29 14.9 -60 20 56           ~ 1 0
13 [KMD2018] 2RXC J0430.2-6127 ClG 04 30 19.7 -61 27 11           ~ 1 0
14 [KMD2018] 2RXC J0430.4-5336 ClG 04 30 39.8 -53 36 54           ~ 1 0
15 1RXS J043048.3-573737 ClG 04 30 48.2 -57 37 30           ~ 1 0
16 1RXS J043113.2-624615 ClG 04 31 13.4 -62 46 16           ~ 1 0
17 1RXS J043114.4-603317 ClG 04 31 14.2 -60 33 18           ~ 1 0
18 [KMD2018] 2RXC J0431.3-6126 ClG 04 31 27.6 -61 26 06           ~ 1 0
19 SPT-CL J0432-6150 ClG 04 32 12.6 -61 50 59           ~ 5 0
20 1RXS J043215.9-594215 ClG 04 32 15.6 -59 42 14           ~ 1 0
21 [KMD2018] 2RXC J0432.6-4549 ClG 04 32 58.3 -45 49 59           ~ 1 0
22 [KMD2018] 2RXC J0433.3-5511 ClG 04 33 25.9 -55 11 13           ~ 1 0
23 [KMD2018] 2RXC J0434.1-4551 ClG 04 34 06.7 -45 51 11           ~ 1 0
24 [KMD2018] 2RXC J0434.1-4943 ClG 04 34 10.6 -49 43 52           ~ 1 0
25 1RXS J043454.6-472630 ClG 04 34 55.0 -47 26 35           ~ 2 0
26 1RXS J043538.0-580115 ClG 04 35 38.2 -58 01 19           ~ 1 0
27 [KMD2018] 2RXC J0435.5-4540 ClG 04 35 49.4 -45 40 16           ~ 1 0
28 1RXS J043630.7-603218 ClG 04 36 30.5 -60 32 17           ~ 1 0
29 EUVE J0437-47.5 ClG 04 37 12.0 -47 31 41           ~ 4 0
30 [KMD2018] 2RXC J0437.3-5753 ClG 04 37 26.9 -57 53 28           ~ 1 0
31 [KMD2018] 2RXC J0438.1-4559 ClG 04 38 05.0 -45 59 02           ~ 1 0
32 [KMD2018] 2RXC J0438.1-4858 ClG 04 38 05.3 -48 58 37           ~ 1 0
33 ACT-CL J0438.2-5419 ClG 04 38 17.70 -54 19 20.7           ~ 64 0
34 [KMD2018] 2RXC J0438.2-4555 ClG 04 38 21.8 -45 55 16           ~ 1 0
35 PSZRX G255.85-41.58 ClG 04 38 39.6 -49 06 31           ~ 4 0
36 MARD J043913.3-460050 ClG 04 39 13.9 -46 00 48           ~ 15 0
37 1RXS J044000.1-484245 ClG 04 40 00.0 -48 42 43           ~ 1 0
38 1RXS J044049.9-465747 ClG 04 40 49.9 -46 57 47           ~ 1 0
39 ACT-CL J0440.9-4743 ClG 04 40 52.3 -47 43 16           ~ 7 0
40 1RXS J044059.7-451015 ClG 04 40 59.5 -45 10 16           ~ 1 0
41 ACO 3283 ClG 04 41 02.9 -48 30 25           ~ 3 0
42 1RXS J044113.7-450255 ClG 04 41 13.9 -45 02 56           ~ 1 0
43 1RXS J044607.8-514249 ClG 04 46 07.9 -51 42 47           ~ 2 0
44 1RXS J044655.5-483358 ClG 04 46 57.4 -48 34 05           ~ 1 0
45 1RXS J044723.7-505525 ClG 04 47 24.2 -50 55 23           ~ 1 0
46 1RXS J044733.0-514504 ClG 04 47 33.8 -51 45 14           ~ 1 0
47 [KMD2018] 2RXC J0447.5-5045 ClG 04 47 45.8 -50 45 25           ~ 1 0
48 [KMD2018] 2RXC J0448.3-4540 ClG 04 48 30.0 -45 40 12           ~ 1 0
49 1RXS J044910.2-490041 ClG 04 49 11.0 -49 00 43           ~ 1 0
50 [KMD2018] 2RXC J0449.2-4815 ClG 04 49 23.8 -48 15 54           ~ 1 0
51 [KMD2018] 2RXC J0449.3-5407 ClG 04 49 25.4 -54 07 34           ~ 1 0
52 ACO 3292 ClG 04 49 54.7 -44 40 55           ~ 34 0
53 [KMD2018] 2RXC J0451.5-5058 ClG 04 51 50.9 -50 58 16           ~ 1 0
54 1RXS J045153.2-452111 ClG 04 51 52.6 -45 21 18           ~ 1 0
55 1RXS J050054.7-511547 ClG 05 00 55.0 -51 15 43           ~ 3 0
56 1RXS J050058.4-634601 ClG 05 00 58.1 -63 46 01           ~ 1 0
57 1RXS J050336.7-565825 ClG 05 03 36.7 -56 58 30           ~ 1 0
58 1RXS J050402.6-492926 ClG 05 04 02.4 -49 29 24           ~ 1 0
59 [KMD2018] 2RXC J0505.3-6145 ClG 05 05 26.6 -61 45 00           ~ 1 0
60 [KMD2018] 2RXC J0506.1-6310 ClG 05 06 06.2 -63 10 12           ~ 1 0
61 1RXS J050927.6-564013 ClG 05 09 28.6 -56 40 26           ~ 1 0
62 [KMD2018] 2RXC J0510.0-6118 ClG 05 10 01.2 -61 18 18           ~ 1 0
63 [KMD2018] 2RXC J0515.1-6159 ClG 05 15 12.7 -61 59 42           ~ 1 0
64 [KMD2018] 2RXC J0516.3-5431 ClG 05 16 34.8 -54 31 05           ~ 1 0
65 [KMD2018] 2RXC J0517.4-5602 ClG 05 17 39.4 -56 02 28           ~ 1 0
66 1RXS J051757.1-583435 ClG 05 17 57.4 -58 34 26           ~ 2 0
67 1RXS J051824.7-560110 ClG 05 18 24.5 -56 01 08           ~ 1 0
68 1RXS J051828.7-561544 ClG 05 18 28.1 -56 16 12           ~ 1 0
69 1RXS J051845.9-572043 ClG 05 18 45.8 -57 20 42           ~ 3 0
70 [KMD2018] 2RXC J0519.2-6109 ClG 05 19 22.3 -61 09 04           ~ 1 0
71 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17423 0
72 1RXS J052447.2-555029 ClG 05 24 47.8 -55 50 31           ~ 1 0
73 PSZRX G266.73-34.08 ClG 05 24 58.3 -58 14 17           ~ 2 0
74 1RXS J052555.6-621234 ClG 05 25 55.2 -62 12 40           ~ 1 0
75 [KMD2018] 2RXC J0528.4-6218 ClG 05 28 41.3 -62 18 29           ~ 1 0
76 [KMD2018] 2RXC J0528.6-6214 ClG 05 28 58.1 -62 14 31           ~ 1 0
77 [KMD2018] 2RXC J0534.3-6238 ClG 05 34 31.7 -62 38 56           ~ 1 0
78 [KMD2018] 2RXC J0536.2-5847 ClG 05 36 23.0 -58 47 10           ~ 1 0
79 [KMD2018] 2RXC J0536.4-6251 ClG 05 36 38.2 -62 51 25           ~ 1 0
80 [KMD2018] 2RXC J0538.3-6031 ClG 05 38 28.6 -60 31 34           ~ 1 0
81 1RXS J053835.1-604616 ClG 05 38 35.0 -60 46 19           ~ 1 0
82 [KMD2018] 2RXC J0540.5-6144 ClG 05 40 52.8 -61 44 17           ~ 1 0
83 [KMD2018] 2RXC J0541.0-6251 ClG 05 41 00.7 -62 52 01           ~ 1 0
84 [KMD2018] 2RXC J0541.1-6414 ClG 05 41 08.6 -64 14 02           ~ 1 0
85 [KMD2018] 2RXC J0541.2-6254 ClG 05 41 20.4 -62 54 54           ~ 1 0
86 1RXS J054236.1-615414 ClG 05 42 36.2 -61 54 14           ~ 2 0
87 PSZSPT J0543-6218 ClG 05 43 03.6 -62 19 12           ~ 5 0
88 RBS 682 ClG 05 49 19.2 -62 05 13           ~ 3 0
89 1RXS J055202.6-624320 ClG 05 52 01.2 -62 43 12           ~ 1 0
90 1RXS J055226.0-642754 ClG 05 52 26.9 -64 28 01           ~ 1 0
91 1RXS J055529.3-640619 ClG 05 55 28.1 -64 06 18           ~ 2 0
92 1RXS J060208.7-644523 ClG 06 02 08.4 -64 45 22           ~ 1 0
93 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 2971 0

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