2019MNRAS.485.5423D

Query : 2019MNRAS.485.5423D

2019MNRAS.485.5423D - Mon. Not. R. Astron. Soc., 485, 5423-5437 (2019/June-1)

The star formation histories of dwarf galaxies in Local Group cosmological simulations.

DIGBY R., NAVARRO J.F., FATTAHI A., SIMPSON C.M., OMAN K.A., GOMEZ F.A., FRENK C.S., GRAND R.J.J. and PAKMOR R.

Abstract (from CDS):

We use the APOSTLE and Auriga cosmological simulations to study the star formation histories (SFHs) of field and satellite dwarf galaxies. Despite sizeable galaxy-to-galaxy scatter, the SFHs of APOSTLE and Auriga dwarfs exhibit robust average trends with galaxy stellar mass: faint field dwarfs (105 < Mstar/M☉ < 106) have, on average, steadily declining SFHs, whereas brighter dwarfs (107 < Mstar/M☉ < 109) show the opposite trend. Intermediate-mass dwarfs have roughly constant SFHs. Satellites exhibit similar average trends, but with substantially suppressed star formation in the most recent ∼5 Gyr, likely as a result of gas loss due to tidal and ram-pressure stripping after entering the haloes of their primaries. These simple mass and environmental trends are in good agreement with the derived SFHs of Local Group (LG) dwarfs whose photometry reaches the oldest main-sequence turn-off. SFHs of galaxies with less deep data show deviations from these trends, but this may be explained, at least in part, by the large galaxy-to-galaxy scatter, the limited sample size, and the large uncertainties of the inferred SFHs. Confirming the predicted mass and environmental trends will require deeper photometric data than currently available, especially for isolated dwarfs.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: dwarf - galaxies: evolution - Local Group - galaxies: star formation

Simbad objects: 105

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Number of rows : 105
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
3 ESO 410-5 LSB 00 15 31.21 -32 10 49.9   15.32 14.9 14.58   ~ 120 1
4 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
5 NAME Sculptor dE1 GiG 00 23 51.7 -24 42 18   17.73       ~ 71 1
6 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
7 ESO 294-10 AG? 00 26 33.37 -41 51 19.1   15.76 15.3 14.97   ~ 122 2
8 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
9 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
10 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
11 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1370 1
12 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
13 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
14 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
15 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
16 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 124 0
17 ESO 540-30 AG? 00 49 20.96 -18 04 31.5   16.45   15.33   ~ 92 1
18 MCG-04-03-019 G 00 49 49.3 -21 00 58 16.11 15.64 15.36 14.8 15.5 ~ 144 1
19 ESO 540-32 LSB 00 50 24.5 -19 54 23 17.44 16.54 16.01 15.70   ~ 79 1
20 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 128 0
21 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
22 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
23 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
24 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
25 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
26 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
27 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
28 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
29 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
30 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
31 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
32 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
33 LEDA 95597 LSB 06 47 45.6 +80 07 27   16.4       ~ 74 0
34 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
35 UGCA 133 G 07 34 11.5 +66 52 47 16.40 15.48 14.80 14.76   ~ 93 0
36 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
37 NAME M 81 Dwarf A G 08 23 55.1 +71 01 56   16.5       ~ 209 1
38 Z 311-8 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 357 2
39 Z 331-51 GiG 08 37 03.00 +69 46 31.0 15.70 15.46 14.98 14.89   ~ 316 0
40 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
41 Z 332-57 LSB 09 40 32.33 +71 10 56.0 14.53 14.00 13.66 13.41   ~ 372 1
42 NAME F8D1 G 09 44 47.1 +67 26 19   14.60 13.85     ~ 80 0
43 NAME F6D1 GiG 09 45 10.0 +68 45 54   17.5       ~ 53 0
44 NAME F12D1 G 09 50 10.0 +67 30 24   15.6       ~ 58 1
45 LEDA 28529 G 09 53 48.8 +68 58 09   18.89       ~ 97 1
46 LEDA 28731 G 09 57 02.7 +68 35 30   15.17       ~ 119 1
47 MCG+12-10-012 AG? 09 57 32.8632 +69 02 50.735 15.19 15.15 14.10 14.12   ~ 327 4
48 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
49 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
50 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
51 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
52 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
53 LEDA 29231 G 10 04 40.3 +68 15 20   17.43 16.72     ~ 77 0
54 UGC 5428 AG? 10 05 06.40 +66 33 32.0 17.89 16.82 16.09 15.73   ~ 113 1
55 UGC 5442 AG? 10 07 01.90 +67 49 39.0 17.09 15.73 15.07 14.81   ~ 95 1
56 NAME IKN G 10 08 05.9 +68 23 57           ~ 82 0
57 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
58 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
59 LEDA 4689216 GiG 10 21 25.2 +71 06 58           ~ 62 0
60 DDO 78 G 10 26 27.9 +67 39 24   15.8       ~ 88 1
61 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 703 1
62 Z 333-35 GiG 10 30 35.03 +70 37 07.2 14.81 13.69 13.01 12.73   ~ 140 0
63 LEDA 32667 LSB 10 52 55.1 +69 32 46   17.2       ~ 88 1
64 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
65 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
66 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 237 0
67 Z 214-32 AG? 11 50 52.98254 +38 52 50.6594   13.72 13.9 13.39   ~ 175 0
68 NGC 4163 LSB 12 12 09.34 +36 10 08.1 14.33 13.70 13.2 12.98   ~ 238 0
69 ESO 321-14 AG? 12 13 48.8792 -38 14 00.250 16.32 15.70 15.35 15.20 15.2 ~ 92 0
70 UGCA 276 G 12 14 57.9 +36 13 07 17.66 16.85 16.22 15.92   ~ 105 1
71 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
72 Z 216-4 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 270 0
73 NAME CVn I dwA GiC 12 38 40.06 +32 46 00.5 16.91 16.66 16.73 16.62   ~ 242 0
74 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
75 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
76 ESO 269-37 AG? 13 03 33.1398 -46 35 10.765   16.29   14.95   ~ 48 1
77 Z 316-9 AG? 13 06 24.85 +67 42 25.0 14.08 13.61 13.08 12.98   ~ 268 1
78 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
79 Z 271-48 EmG 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 218 0
80 Z 218-34 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 165 0
81 ESO 325-11 AG? 13 45 01.0528 -41 51 45.993   14.02   13.49 12.9 ~ 113 0
82 MCG-06-30-025 EmG 13 49 17.5109711256 -36 03 48.860478360   11.00   10.11   ~ 120 1
83 Z 190-66 AG? 13 50 51.3127548768 +38 01 14.958828876 15.56 14.78   14.33   ~ 161 0
84 LEDA 2807150 LSB 13 54 33.356 +04 14 39.66   16.8 17.1     ~ 89 0
85 MCG+06-31-023 AG? 13 54 48.8114 +35 50 07.775   16.5   15.20   ~ 123 1
86 LEDA 166185 G 14 07 10.1 +35 03 37   16.9 17.2     ~ 94 0
87 Z 133-19 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 296 0
88 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
89 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
90 LEDA 2801026 LSB 16 13 47.504 +54 22 08.25     15.9     ~ 115 0
91 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
92 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
93 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
94 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
95 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
96 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
97 IC 5152 rG 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 273 1
98 NAME Andromeda XXVIII G 22 32 41.20 +31 12 58.2     15.6     ~ 88 0
99 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
100 MCG-05-55-012 G 23 26 27.52 -32 23 19.5 15.34 14.71 14.23 14.03   ~ 163 0
101 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
102 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
103 LEDA 2807157 GiG 23 45 35.177 +38 43 05.09   16.7 15.2     ~ 93 1
104 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
105 NAME Local Group GrG ~ ~           ~ 9325 0

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