2021MNRAS.506.2459M

Query : 2021MNRAS.506.2459M

2021MNRAS.506.2459M - Mon. Not. R. Astron. Soc., 506, 2459-2470 (2021/September-2)

Testing the tidal stripping scenario of ultracompact dwarf galaxy formation by using internal properties.

MAYES R.J., DRINKWATER M.J., PFEFFER J., BAUMGARDT H., LIU C., FERRARESE L., COTE P. and PENG E.W.

Abstract (from CDS):

We use the hydrodynamical EAGLE simulation to test if ultracompact dwarf galaxies (UCDs) can form by tidal stripping by predicting the ages and metallicities of tidally stripped galaxy nuclei in massive galaxy clusters, and compare these results to compiled observations of age and metallicities of observed UCDs. We further calculate the colours of our sample of simulated stripped nuclei using single stellar population models and compare these colours to observations of UCDs in the Virgo Cluster. We find that the ages of observed UCDs are consistent with simulated stripped nuclei, with both groups of objects having a mean age >9 Gyr. Both stripped nuclei and UCDs follow a similar mass-metallicity relationship, and the metallicities of observed UCDs are consistent with those of simulated stripped nuclei for objects with M > 107 M☉. The colours of observed UCDs are also consistent with our simulated stripped nuclei, for objects with M > 107 M☉, with more massive objects being redder. We find that the colours of stripped nuclei exhibit a bimodal red and blue distribution that can be explained by the dependency of colour on age and metallicity, and by the mass-colour relation. We additionally find that our low-mass stripped nuclei sample is consistent with the colour of blue globular clusters. We conclude that the internal properties of simulated nuclei support the tidal stripping model of UCD formation.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): methods: numerical - galaxies: dwarf - galaxies: formation - galaxies: interactions - galaxies: nuclei - galaxies: star clusters: general

Simbad objects: 86

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Number of rows : 86
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 NAME NGC 1023 Group GrG 02 39 37.9 +39 20 51           ~ 81 0
2 NAME NGC 1132 Group GrG 02 52 51.8 -01 16 29           ~ 9 0
3 [FDE2007] J033622.23-353634.4 GiC 03 36 22.2511813776 -35 36 34.096342644           ~ 7 0
4 [FDE2007] J033626.67-352201.5 GiC 03 36 26.6998301472 -35 22 01.425471168           ~ 10 1
5 [BAL2007] uc329.7 AG? 03 36 27.6956643984 -35 14 13.927797384           ~ 11 2
6 [FDE2007] J033647.69-354834.0 GiC 03 36 47.7214495896 -35 48 33.690107268           ~ 7 0
7 [BAL2007] uc257.5 GiC 03 37 03.2455003608 -35 38 04.385867820   19.85 19.31     ~ 34 1
8 [FDE2007] J033724.83-353610.0 GiC 03 37 24.8566351968 -35 36 09.605900160           ~ 6 0
9 FCOS 4-2028 Gl? 03 37 43.5034612128 -35 15 09.937168380     20.41     ~ 9 0
10 NAME UCD-FORS 81 GlC 03 38 06.3040671264 -35 28 58.550357136   18.85 19.31 18.80 18.18 ~ 39 1
11 NAME UCD-FORS 36 G 03 38 06.5041040184 -35 23 03.708523500     20.00   19 ~ 13 0
12 [DJG2000] UCO 27 GlC 03 38 10.3468630320 -35 24 05.798717532     19.66 19.17   ~ 12 0
13 NAME UCD28 G 03 38 10.7378772816 -35 25 46.019689176     19.97   18.68 ~ 18 0
14 [DRG2004] 92:39 GlC 03 38 12.700 -35 28 57.41     20.66 20.27   ~ 23 0
15 NAME UCD31 GlC 03 38 16.5027178944 -35 26 19.561859520     20.60   19.65 ~ 23 0
16 [JPB2015] 054.5711568-35.4418764 GlC 03 38 17.0873774160 -35 26 30.920222868     20.83 20.44   ~ 20 0
17 [MHJ2008] F-7 GlC 03 38 17.5987243392 -35 33 02.482681212     20.49     ~ 20 0
18 [MHJ2008] F-31 G 03 38 19.7994926568 -35 23 39.214416192           ~ 2 0
19 [MHJ2008] F-8 GlC 03 38 23.2407296424 -35 20 00.607683768     20.09 19.59   ~ 14 0
20 FCOS 3-2027 G 03 38 23.7417495312 -35 13 49.405426788     19.76     ~ 11 1
21 FCOS 2-2106 GlC 03 38 25.0480862136 -35 29 25.149415668     20.51     ~ 9 0
22 FCOS 1-2024 GlC 03 38 25.5469146744 -35 37 42.618471816     20.06 19.50   ~ 18 0
23 [JPB2015] 054.6176396-35.4272815 GlC 03 38 28.3572375336 -35 25 38.311964472     20.371   19.332 ~ 18 0
24 [MHJ2008] F-12 G 03 38 28.9789910448 -35 22 56.105739516     19.87     ~ 17 0
25 [MHJ2008] F-13 G 03 38 29.2186568304 -35 27 19.839607524           ~ 2 0
26 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
27 FCOS 0-2032 GlC 03 38 30.22 -35 21 30.9     20.78     ~ 8 0
28 NAME UCD-FORS 50 GlC 03 38 33.8218893216 -35 25 57.067738032     20.61   19.380 ~ 25 0
29 [MHJ2008] F-53 GlC 03 38 40.550 -35 29 09.70     20.93 20.35   ~ 20 0
30 [MHJ2008] F-18 G 03 38 41.9519250336 -35 33 12.952421316     19.70     ~ 14 1
31 [BAL2007] gc319.1 GlC 03 38 49.848 -35 23 35.88     20.96 20.31   ~ 8 0
32 CGF 1-4 GlC 03 38 54.0545340024 -35 33 33.320376180   18.5 18.06     ~ 81 1
33 NAME UCD-FORS 1 GlC 03 38 56.1843430272 -35 24 48.907687176     20.31   19.29 ~ 9 0
34 FCOS 1-60 GlC 03 39 17.6834039208 -35 25 30.066435228   21.15 20.19 19.57   ~ 25 0
35 [MHJ2008] F-23 G 03 39 20.50 -36 19 14.2           ~ 3 0
36 FCOS 3-2004 GlC 03 39 20.5202777400 -35 19 14.337162408     19.73 18.77   ~ 10 0
37 LEDA 2793608 GiC 03 39 35.9209845336 -35 28 24.441828204   18.82 19.12     ~ 44 1
38 FCSS J033952.5-350424 GiC 03 39 52.5471040440 -35 04 24.003755616   19.66 19.50     ~ 37 0
39 NAME NGC 1566 Group GrG 04 20 00.6 -54 56 17           ~ 180 0
40 NAME HYA SUPERCL SCG 08 57.9 +03 10           ~ 204 0
41 NGC 3613 GiG 11 18 36.130 +57 59 59.73   11.6       ~ 221 0
42 NGVS J123007.57+123631.0 GlC 12 30 07.5690151920 +12 36 30.997290168           ~ 27 0
43 NGVS J123030.86+121841.7 GlC 12 30 30.8585861064 +12 18 41.646846240           ~ 10 0
44 NGVS J123045.92+122501.6 G 12 30 45.9096425616 +12 25 01.538661324   20.77 20.11     ~ 30 0
45 [HJC2005] 1316-3 G 12 30 46.20 +12 24 23.1     20.27     ~ 22 0
46 NGVS J123046.65+122422.2 G 12 30 46.6455659712 +12 24 22.121253792           ~ 12 0
47 NGVS J123047.40+123301.7 GlC 12 30 47.3915513472 +12 33 01.642473216           ~ 11 0
48 NGVS J123047.70+122430.5 LSB 12 30 47.6976083688 +12 24 30.496717332   20.26 19.78     ~ 27 0
49 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
50 NGVS J123048.19+123510.7 GlC 12 30 48.1979329680 +12 35 10.877368560           ~ 20 0
51 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
52 Hanes IV-67 G 12 30 57.3837738072 +12 25 44.498928792   19.32 17.97     ~ 54 0
53 [PLP2016] 187.747336+12.356404 GlC 12 30 59.3640695496 +12 21 23.051712456   21.20 20.11     ~ 22 0
54 NGVS J123101.47+121924.5 LSB 12 31 01.4782233288 +12 19 24.598681140     19.33     ~ 26 0
55 NGVS J123102.59+123414.1 GlC 12 31 02.5848559344 +12 34 14.066729184           ~ 11 0
56 NGVS J123104.48+115636.4 GlC 12 31 04.4756311440 +11 56 36.488582016           ~ 26 0
57 [SFH81] 314 GlC 12 31 05.1313252896 +12 20 03.579471204     20.19     ~ 20 0
58 NGVS J123111.88+124101.1 GlC 12 31 11.8766309592 +12 41 01.083208776           ~ 30 0
59 NGVS J123128.36+122503.6 GlC 12 31 28.3629064464 +12 25 03.577545516           ~ 25 0
60 2MASS J12315289+1215589 G 12 31 52.8990925992 +12 15 59.041171656           ~ 52 0
61 NGVS J123204.35+122030.3 GlC 12 32 04.3487360568 +12 20 30.283469484           ~ 18 0
62 NGVS J123214.58+120305.3 GlC 12 32 14.5785787656 +12 03 05.285264868           ~ 14 0
63 [FDK2008] J123255.55+094412.7 GlC 12 32 55.5477154896 +09 44 12.701616072           ~ 6 0
64 [FDK2008] J123307.36+095254.3 GlC 12 33 07.3590962904 +09 52 54.234735456           ~ 7 0
65 SDSS J124155.33+114003.7 G 12 41 55.3338419712 +11 40 03.790134948           ~ 56 0
66 SDSS J124211.04+113841.2 G 12 42 11.0513 +11 38 41.257           ~ 42 0
67 NAME M60-UCD1 G 12 43 35.9688 +11 32 04.700           ~ 100 0
68 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
69 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 186 0
70 [VHH81] 1 GlC 13 23 44.190 -43 11 11.80   18.26 20.0 17.42   ~ 24 0
71 [VHH81] 29 GlC 13 24 40.3771770240 -43 18 05.308939512 19.77 19.15 18.15 17.54 16.89 ~ 36 0
72 [VHH81] 11 GlC 13 24 54.7069756200 -43 01 21.773072820 19.55 18.96 17.91 17.26 16.61 ~ 36 0
73 [HGH2004] 201.24254-42.93612 GlC 13 24 58.1998428312 -42 56 10.050292680 19.34 18.73 17.71 17.10 16.44 ~ 33 0
74 [VHH81] 5 GlC 13 25 16.12 -42 52 58.2 18.70 18.49 17.68 17.13 16.68 ~ 20 0
75 [HCH99] 2 GlC 13 25 16.690 -43 02 08.70 19.27 18.87 17.93 17.37 16.76 ~ 22 0
76 [VHH81] 6 GlC 13 25 22.19 -43 02 45.6 18.65 18.17 17.21 16.61 16.03 ~ 27 0
77 [HCH99] 15 GlC 13 25 29.9072539214 -43 00 05.104613492 19.27 18.87 17.93 17.37 16.76 ~ 20 0
78 [KKF2001] J132530.29-425934.64 GlC 13 25 30.2770146048 -42 59 34.770372108   19.71 20.0 18.45   ~ 26 0
79 [HCH99] 18 GlC 13 25 31.60 -43 00 02.8 21.06 20.99 19.93 19.20 18.43 ~ 31 0
80 [VHH81] 44 GlC 13 25 31.7317181472 -43 19 22.746120024 19.76 19.50 18.69 18.14 17.66 ~ 30 0
81 [VHH81] 17 GlC 13 25 39.7188791400 -42 55 59.137358376 18.82 18.51 17.63 17.10 16.57 ~ 36 0
82 [VHH81] 21 GlC 13 25 52.7266111104 -43 05 46.501781856 19.16 18.76 17.87 17.32 16.77 ~ 51 0
83 [VHH81] 22 GlC 13 25 53.5504608507 -42 59 07.532093559 19.39 19.06 18.15 17.62 17.07 ~ 33 0
84 CXOU J132554.5-425924 GlC 13 25 54.5684562024 -42 59 25.329473880 18.92 18.29 17.22 16.62 15.95 ~ 49 0
85 [VHH81] 7 GlC 13 26 05.3936216880 -42 56 32.376406056 18.38 18.03 17.17 16.65 16.23 ~ 42 0
86 ACO S 740 ClG 13 43 32 -38 11.1           ~ 21 0

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