2014MNRAS.445.1694L

Query : 2014MNRAS.445.1694L

2014MNRAS.445.1694L - Mon. Not. R. Astron. Soc., 445, 1694-1712 (2014/December-1)

The triggering of starbursts in low-mass galaxies.

LELLI F., VERHEIJEN M. and FRATERNALI F.

Abstract (from CDS):

Strong bursts of star formation in galaxies may be triggered either by internal or external mechanisms. We study the distribution and kinematics of the HI gas in the outer regions of 18 nearby starburst dwarf galaxies that have accurate star formation histories from Hubble Space Telescope observations of resolved stellar populations. We find that starburst dwarfs show a variety of HI morphologies, ranging from heavily disturbed HI distributions with major asymmetries, long filaments, and/or Hi-stellar offsets to lopsided HI distributions with minor asymmetries. We quantify the outer HI asymmetry for both our sample and a control sample of typical dwarf irregulars. Starburst dwarfs have more asymmetric outer HI morphologies than typical irregulars, suggesting that some external mechanism triggered the starburst. Moreover, galaxies hosting an old burst ( ≳ 100Myr) have more symmetric HI morphologies than galaxies hosting a young one ( ≲ 100Myr), indicating that the former ones probably had enough time to regularize their outer HI distribution since the onset of the burst. We also investigate the nearby environment of these starburst dwarfs and find that most of them ( ∼ 80 percent) have at least one potential perturber at a projected distance ≲ 200kpc. Our results suggest that the starburst is triggered either by past interactions/mergers between gas-rich dwarfs or by direct gas infall from the intergalactic medium.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: interactions - galaxies: irregular - galaxies: kinematics and dynamics - galaxies: starburst

Simbad objects: 116

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Number of rows : 116
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 UGC 116 G 00 12 38.2460957160 +05 30 19.407810204   15.40       ~ 38 0
2 IC 10 G 00 20 25.50 +59 17 17.0   13.6 9.5     ~ 1119 1
3 MCG+00-02-035 H2G 00 27 51.551 +03 29 22.89   15.5       ~ 35 0
4 APMUKS (BJ) B003411.16-325055.7 G 00 36 38.0 -32 34 28           ~ 14 0
5 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3336 2
6 ESO 540-31 G 00 49 49.3 -21 00 58 16.11 15.64 15.36 14.8 15.5 ~ 133 1
7 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11149 1
8 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 509 0
9 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 473 0
10 SDSS J012615.97-002429.1 GiC 01 26 15.97800 -00 24 29.1276           ~ 4 0
11 6dFGS gJ012646.5-003845 H2G 01 26 46.6028219232 -00 38 46.165233696   17   15.46   ~ 56 0
12 NGC 625 AGN 01 35 04.632 -41 26 10.32 12.37 11.78 11.25 11.03 11.5 ~ 286 2
13 ESO 245-5 AG? 01 45 03.74 -43 35 52.9 13.45 12.92 12.63 12.51 12.8 ~ 140 1
14 LEDA 471509 AG? 01 53 25.3150533648 -49 57 18.144457056   17.34   15.75   ~ 6 0
15 Mrk 1039 EmG 02 27 32.8117078176 -10 09 56.431205028   14.56   13.5 14.0 ~ 85 0
16 6dFGS gJ032504.2-365540 GiP 03 25 04.19 -36 55 38.7   15.49       ~ 28 0
17 SBSG 0335-052 bCG 03 37 44.06 -05 02 40.2     16.65     ~ 472 1
18 UGCA 86 AG? 03 59 48.30 +67 08 18.6   14.2 14.2     ~ 104 0
19 IC 2038 GiP 04 08 53.7569973144 -55 59 21.778144080   14.82   13.80   ~ 40 0
20 IC 2039 GiP 04 09 02.3235506064 -56 00 41.646005964   14.97   13.91   ~ 31 0
21 NGC 1533 EmG 04 09 51.8356041744 -56 07 06.410207352   11.77 10.92 10.27 11.0 ~ 198 0
22 [EDJ2007] Dorado 1 GiG 04 16 24.55 -56 37 19.7           ~ 4 0
23 LEDA 75133 LSB 04 19 22.9270 -56 20 21.772   17.0       ~ 10 0
24 NAME NGC 1566 Group GrG 04 20 00.6 -54 56 17           ~ 152 0
25 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1241 3
26 UGCA 92 AG? 04 32 03.8366 +63 36 51.243   16.15       ~ 125 0
27 NAME Cam B G 04 53 07.1 +67 05 57   16.71       ~ 78 0
28 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 662 1
29 Mrk 1094 bCG 05 10 48.1123757064 -02 40 53.685168744   14.0 14.4     ~ 88 1
30 ZW II 33b G 05 11 44.5 -03 00 58           ~ 2 0
31 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
32 UGCA 116 H2G 05 55 42.645 +03 23 32.23 10.74 11.68 11.46   11.82 ~ 538 0
33 NGC 2363 AG? 07 28 29.59 +69 11 34.3   15.5       ~ 257 1
34 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 769 0
35 UGCA 133 G 07 34 11.5 +66 52 47 16.40 15.48 14.80 14.76   ~ 84 0
36 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1789 1
37 NGC 2537 AG? 08 13 14.643 +45 59 23.25 12.18 12.50 11.69 11.66   ~ 301 2
38 IC 2233 LSB 08 13 58.909 +45 44 31.74 12.87 13.41 12.63 12.80   ~ 241 1
39 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 769 2
40 NAME M 81 Dwarf A G 08 23 55.1 +71 01 56   16.5       ~ 203 1
41 LEDA 2790884 bCG 08 25 55.5166210656 +35 32 31.833368556   18.2       ~ 120 1
42 UGC 4459 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 338 2
43 UGC 4483 GiG 08 37 03.00 +69 46 31.0 15.70 15.46 14.98 14.89   ~ 303 0
44 IC 2450 EmG 09 17 05.310 +25 25 45.16   14.0       ~ 68 0
45 NGC 2814 GiP 09 21 11.525 +64 15 11.73   14.0       ~ 82 0
46 IC 2458 GiP 09 21 30.1318400448 +64 14 19.768079076   14.9       ~ 81 0
47 NGC 2820 GiP 09 21 45.564 +64 15 28.87   13.1       ~ 162 0
48 NGC 2915 AG? 09 26 11.532 -76 37 34.75 13.13 12.93 12.68 11.90 12.8 ~ 354 2
49 MCG+09-16-029 AG? 09 33 45.271 +51 55 10.00   15       ~ 6 0
50 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 1106 1
51 Mrk 1418 AG? 09 40 27.0097822368 +48 20 15.466478856   13.5       ~ 71 0
52 NAME M 81-82 Group GrG 09 55 +69.1           ~ 717 0
53 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4450 3
54 NAME Arp Loop G 09 57 29.0 +69 16 20           ~ 67 1
55 Mrk 26 G 10 11 51.4994549064 +58 53 23.933986224   15.7       ~ 23 0
56 UGC 5692 GiG 10 30 35.03 +70 37 07.2 14.81 13.69 13.01 12.73   ~ 131 0
57 Mrk 33 AG? 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 368 1
58 2MASX J10565106+7742591 G 10 56 51.0413741400 +77 42 58.663241460   15.5       ~ 8 0
59 NGC 3510 LSB 11 03 43.356 +28 53 13.58   13.6       ~ 192 0
60 NGC 3669 GiG 11 25 26.8153992360 +57 43 16.464892008   12.9       ~ 69 0
61 UGC 6456 bCG 11 27 59.90 +78 59 39.0   14.50       ~ 335 1
62 MCG+10-17-011 AG? 11 32 02.6164558680 +57 22 36.292387908   17       ~ 59 1
63 Mrk 178 bCG 11 33 29.12 +49 14 17.4 14.69 14.61 14.25 14.17   ~ 230 1
64 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 220 0
65 UGC 6578 EmG 11 36 36.636 +00 49 02.61   15.3   14.518 15.1 ~ 122 0
66 Mrk 750 H2G 11 50 02.7462827640 +15 01 23.396910168   15.4       ~ 81 0
67 LEDA 37102 Sy1 11 51 33.3537570144 -02 22 21.893502576   17       ~ 167 0
68 Mrk 1307 Sy1 11 52 37.19 -02 28 09.9   14.79   14.09 14.9 ~ 171 0
69 NGC 4068 AG? 12 04 03.265 +52 35 26.05   13.29   12.77   ~ 180 0
70 MCG+06-27-017 LSB 12 09 56.466 +36 26 03.34   15.5       ~ 41 0
71 NGC 4163 LSB 12 12 09.34 +36 10 08.1 14.33 13.70 13.2 12.98   ~ 222 0
72 NGC 4190 LSB 12 13 44.765 +36 38 02.49 13.88 13.40 13.25 12.86   ~ 211 0
73 UGCA 276 G 12 14 57.9 +36 13 07 17.66 16.85 16.22 15.92   ~ 100 1
74 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 965 1
75 Z 269-49 AG? 12 15 46.626 +52 23 13.91   15.3       ~ 70 0
76 UGC 7298 LSB 12 16 30.415 +52 13 45.40   17       ~ 77 1
77 NGC 4248 GiG 12 17 49.8429850848 +47 24 33.085192824   13.12 12.53     ~ 120 1
78 UGC 7408 GiG 12 21 15.01 +45 48 40.8   14.8       ~ 114 2
79 Mrk 209 bCG 12 26 15.69 +48 29 38.3   15.3       ~ 346 0
80 UGC 7577 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 255 0
81 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1125 1
82 SDSS J122953.35+473150.2 GiG 12 29 53.40 +47 31 52.0   14.32   13.44   ~ 80 0
83 MCG+07-26-012 AG? 12 30 23.574 +42 54 05.76   15       ~ 35 0
84 NAME CVn I Group GrG 12 32 48.3 +33 57 07           ~ 142 0
85 LEDA 2832115 LSB 12 33 06.700 +38 07 00.11           ~ 15 0
86 UGC 7719 GiG 12 34 00.540 +39 01 09.04   15.4       ~ 58 0
87 UGCA 290 IG 12 37 21.7 +38 44 28   17       ~ 70 1
88 NGC 4631 GiP 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1095 2
89 IC 3687 GiG 12 42 15.1540831512 +38 30 05.844632940   15.5       ~ 145 0
90 UGC 7950 bCG 12 46 56.426 +51 36 46.80   14.1       ~ 112 0
91 NGC 4861 H2G 12 59 02.340 +34 51 33.98   12.90 12.32     ~ 383 2
92 UGC 8245 AG? 13 08 36.295 +78 56 13.93 15.14 14.54 14.08 13.86   ~ 41 0
93 NAME Centaurus A Sy2 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4486 3
94 LEDA 677373 G 13 37 00.5 -33 21 46           ~ 26 0
95 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2573 2
96 NAME NGC 5236 Group GrG 13 37 06 -29 51.9           ~ 64 0
97 ESO 444-84 GiC 13 37 19.99 -28 02 42.0 16.04 15.34 15.05 15.05 14.9 ~ 121 1
98 NGC 5253 AGN 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1366 4
99 NGC 5264 GiG 13 41 36.683 -29 54 47.25 13.86 12.96 12.39 12.14 15.83 ~ 152 1
100 UGC 9128 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 283 0
101 MCG+07-29-060 QSO 14 17 01.716 +43 30 13.52   15.6       ~ 172 0
102 NGC 5608 AG? 14 23 18.734 +41 46 36.60   13.96   13.23   ~ 76 0
103 Mrk 829 GiP 14 50 56.495 +35 34 18.27   14.5 14.83     ~ 209 0
104 UGC 9562 GiP 14 51 14.3956253136 +35 32 32.932212324   14.2       ~ 160 0
105 CRTS J145657.7+221314 RS* 14 56 57.7241220864 +22 13 15.629509092     14.94 14.87   ~ 7 0
106 NAME Ursa Major Cluster ClG 15 08.8 +67 07           ~ 410 0
107 NAME Local Void vid 18 38 +18.0           ~ 198 0
108 [MPC97] ACO 2312 4 GiC 18 54 15.60 +68 22 44.1           ~ 2 0
109 UGC 11411 AG? 19 08 42.253 +70 17 02.09   14.4       ~ 20 0
110 NGC 6789 AG? 19 16 41.169 +63 58 23.90   13.76       ~ 113 1
111 LEDA 166193 LSB 20 31 32.0 +60 48 44   16.15       ~ 25 0
112 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2529 2
113 NGC 7077 AG? 21 29 59.634 +02 24 51.75 14.05 14.25 13.67 13.23 12.86 ~ 102 0
114 Mrk 324 AG? 23 26 32.783 +18 16 00.07   15.5       ~ 66 0
115 NAME NGC 4631 Group GrG ~ ~           ~ 14 0
116 NAME Local Group GrG ~ ~           ~ 8391 0

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