2023MNRAS.518.3004K

Query : 2023MNRAS.518.3004K

2023MNRAS.518.3004K - Mon. Not. R. Astron. Soc., 518, 3004-3016 (2023/January-2)

The MeerKAT Galaxy Clusters Legacy Survey: star formation in massive clusters at 0.15 < z < 0.35.

KESEBONYE K.C., HILTON M., KNOWLES K., COTTON W.D., CLARKE T.E., LOUBSER S.I., MOODLEY K. and SIKHOSANA S.P.

Abstract (from CDS):

We investigate dust-unbiased star formation rates (SFRs) as a function of the environment in 20 massive clusters ($M_{200}\gt 4\times 10^{14}\, {\rm M}_{\odot }$) between 0.15 < $z$ < 0.35 using radio luminosities (L1.4GHz) from the recently released MeerKAT Galaxy Cluster Legacy Survey catalogue. We use optical data from the Dark Energy Camera Legacy Survey to estimate photo-$z$s and assign cluster membership. We observe a steady decline in the fraction (fSF) of star-forming galaxies from 2R200 to the cluster centres in our full cluster sample, but notice a significant difference in fSF gradients between clusters hosting large-scale extended radio emission in the form of haloes and relics (associated with ongoing merger activity) and non-radio-halo/relic hosting clusters. For star-forming galaxies within R200, the fSF in clusters hosting radio haloes and relics (0.148 ± 0.016) is $\approx 23{{\ \rm per\ cent}}$ higher than in non-radio-halo/relic hosting clusters (0.120 ± 0.011). We observe a 3σ difference between the total SFR normalized by cluster mass for non-radio-halo/relic hosting clusters (21.5 ± 1.9 M⊙yr–1/1014M⊙) and for clusters with radio haloes and relics (26.1 ± 1.4 M⊙yr–1/1014M⊙). There is a ≈4× decline in the mass normalized total SFR of clusters for galaxies with SFR above the luminous infrared galaxies (LIRGs) SFR limit at our redshift slice, corresponding to 2 Gyr in lookback time. This is consistent with the rapid decline in SF activity with decreasing redshift amongst cluster LIRGs seen by previous studies using infrared-derived SFR.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: clusters: general - galaxies: evolution - galaxies: star formation

Simbad objects: 51

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Number of rows : 51
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 MKTCS J001415.81-302934.1 rG 00 14 15.840 -30 29 32.00           ~ 2 0
2 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
3 MKTCS J001430.87-302427.4 rG 00 14 30.780 -30 24 27.50     20.240     ~ 5 0
4 MKTCS J004304.73-203117.5 rG 00 43 04.73 -20 31 17.5           ~ 1 0
5 MKTCS J004320.06-204003.6 rG 00 43 20.06 -20 40 03.6           ~ 1 0
6 ACO 2813 ClG 00 43 22.8 -20 37 21           ~ 111 0
7 MKTCS J004324.60-203530.1 rG 00 43 24.60 -20 35 30.1           ~ 1 0
8 ACO 2830 ClG 00 51 10.580 -48 34 22.85           ~ 23 0
9 MKTCS J005125.67-483809.1 rG 00 51 25.67 -48 38 09.1           ~ 1 0
10 ACO 2895 ClG 01 18 07.985 -26 58 00.42           ~ 54 0
11 MKTCS J013136.75-134507.0 rG 01 31 36.75 -13 45 07.0           ~ 1 0
12 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
13 MKTCS J013203.34-133538.1 rG 01 32 03.34 -13 35 38.1           ~ 1 0
14 MKTCS J021658.16-524609.7 rG 02 16 58.16 -52 46 09.7           ~ 1 0
15 MKTCS J021702.08-524425.7 rG 02 17 02.08 -52 44 25.7           ~ 1 0
16 ACT-CL J0217.1-5244 ClG 02 17 14.3 -52 45 39           ~ 36 0
17 MKTCS J021724.36-524854.2 rG 02 17 24.36 -52 48 54.2           ~ 1 0
18 ACO 3016 ClG 02 23.4 -42 14           ~ 14 0
19 ACO 3017 ClG 02 25 53.4 -41 54 58           ~ 65 0
20 LCRS B022356.9-420501 rG 02 25 55.1563689192 -41 51 32.860801008           ~ 4 0
21 MKTCS J023145.29-442557.8 rG 02 31 45.29 -44 25 57.8           ~ 1 0
22 ACT-CL J0232.2-4421 ClG 02 32 18.69 -44 20 41.5           ~ 130 0
23 MKTCS J024521.08-530509.6 rG 02 45 21.08 -53 05 09.6           ~ 1 0
24 MKTCS J024528.02-530252.9 rG 02 45 28.02 -53 02 52.9           ~ 2 0
25 MKTCS J024528.61-530221.5 rG 02 45 28.61 -53 02 21.5           ~ 2 0
26 ACO S 295 ClG 02 45 35.80 -53 02 16.8           ~ 86 0
27 MKTCS J024536.66-525542.0 rG 02 45 36.66 -52 55 42.0           ~ 1 0
28 MKTCS J025734.14-220616.0 rG 02 57 34.14 -22 06 16.0           ~ 1 0
29 MKTCS J025735.06-220641.4 rG 02 57 35.06 -22 06 41.4           ~ 1 0
30 ACO 402 ClG 02 57 41.33 -22 09 14.4           ~ 62 0
31 MKTCS J025749.49-220615.3 rG 02 57 49.49 -22 06 15.3           ~ 1 0
32 ACO 3140 ClG 03 36 17.8 -40 37 21           ~ 30 0
33 ACO 3292 ClG 04 49 54 -44 40.3           ~ 44 0
34 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 279 0
35 MKTCS J045409.32-101510.5 rG 04 54 09.352999 -10 15 10.46099           ~ 4 0
36 MKTCS J045418.64-101813.4 rG 04 54 18.87 -10 18 12.2           ~ 2 0
37 ACO 3322 ClG 05 10 16.4 -45 19 12           ~ 42 0
38 LEDA 528474 rG 05 10 33.0 -45 16 48           ~ 2 0
39 ACO S 520 ClG 05 16 37.40 -54 30 01.5           ~ 114 0
40 DES J051658.70-543322.3 rG 05 16 58.6958729640 -54 33 22.271345064           ~ 3 0
41 ACO 3343 ClG 05 25 49.1 -47 14 58           ~ 37 0
42 ACT-CL J0528.8-3927 ClG 05 28 56.2 -39 27 49           ~ 78 0
43 ACT-CL J0543.4-4430 ClG 05 43 24.417 -44 30 28.92           ~ 12 0
44 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
45 ACT-CL J2023.3-5535 ClG 20 23 24.5 -55 35 32           ~ 49 0
46 MKTCS J202400.58-553539.1 rG 20 24 00.58 -55 35 39.1           ~ 1 0
47 LCRS B224538.6-445131 rG 22 48 33.08 -44 35 38.9           ~ 2 0
48 MKTCS J224841.78-443157.1 LeG 22 48 41.747 -44 31 56.72   22.33     20.58 ~ 10 0
49 MKTCS J224843.95-443151.4 rG 22 48 43.95 -44 31 51.4           ~ 1 0
50 ACO S 1063 ClG 22 48 45.4 -44 31 42           ~ 395 0
51 MKTCS J224859.29-442935.6 rG 22 48 59.29 -44 29 35.6           ~ 1 0

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