2013MNRAS.435.1020H

Query : 2013MNRAS.435.1020H

2013MNRAS.435.1020H - Mon. Not. R. Astron. Soc., 435, 1020-1036 (2013/October-3)

Quantified HI morphology - VII. Star formation and tidal influence on local dwarf HI morphology.

HOLWERDA B.W., PIRZKAL N., DE BLOK W.J.G. and BLYTH S.-L.

Abstract (from CDS):

Scale-invariant morphology parameters applied to atomic hydrogen maps (Hi) of galaxies can be used to quantify the effects of tidal interaction or star formation on the interstellar matter (ISM). Here we apply these parameters, concentration, asymmetry, smoothness, Gini, M20, and the GM parameter, to two public surveys of nearby dwarf galaxies, the Very Large Array-ANGST and Local Irregulars That Trace Luminosity Extremes-The Hi Nearby Galaxy Survey, to explore whether tidal interaction or the ongoing or past star formation is a dominant force shaping the Hi disc of these dwarfs. Previously, Hi morphological criteria were identified for ongoing spiral-spiral interactions. When we apply these to the irregular dwarf population, they either select almost all or none of the population. We find that only the asymmetry-based criteria can be used to identify very isolated dwarfs (i.e. these have a low tidal indication). Otherwise, there is little or no relation between the level of tidal interaction and the Hi morphology. We compare the Hi morphology to three star formation rates based on either Hα, far-ultraviolet or the resolved stellar population, probing different star formation time-scales. The Hi morphology parameters that trace the inequality of the distribution, the Gini, GM, and M20 parameters, correlate weakly with all these star formation rates. This is in line with the picture that local physics dominates the ISM appearance and not tidal effects. Finally, we compare the Sloan Digital Sky Survey measures of star formation and stellar mass to the Hi morphological parameters for all four Hi surveys. In the two lower resolution Hi surveys (12arcsec), there is no relation between star formation measures and Hi morphology. The morphology of the two high-resolution Hi surveys (6arcsec), the asymmetry, smoothness, Gini, M20, and GM do show a link to the total star formation, but a weak one.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): ISM: structure - galaxies: dwarf - galaxies: ISM - Local Group - galaxies: structure - radio lines: ISM

CDS comments: The bibliographic reference for Hunter et al. 2012 is 2012AJ....144..134H (not ApJ). Table 1, KKH 230 is a probable misprint for KK 230 ([KK98A] 230 in Simbad). LGC 3 is likely LGS 3.

Simbad objects: 73

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Number of rows : 73
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 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 NGC 247 LSB 00 47 08.554 -20 45 37.44 10.11 9.61 9.10 8.87   ~ 480 2
4 MCG-04-03-019 G 00 49 49.3 -21 00 58 16.11 15.64 15.36 14.8 15.5 ~ 144 1
5 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
6 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
7 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 511 0
8 NGC 1156 GiG 02 59 42.8528847264 +25 14 28.352017320 12.13 12.32 11.74     ~ 323 1
9 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
10 LEDA 95597 LSB 06 47 45.6 +80 07 27   16.4       ~ 74 0
11 Z 206-10 AG? 07 28 17.724 +40 46 11.36   15.50       ~ 155 0
12 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
13 MCG+07-16-011 AG? 07 41 25.777 +40 06 46.05   16.0       ~ 125 0
14 Z 87-30 G 07 41 56.3059298112 +16 48 07.451632188   15.4       ~ 233 0
15 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
16 NAME M 81 Dwarf A G 08 23 55.1 +71 01 56   16.5       ~ 209 1
17 MCG+07-18-004 LSB 08 28 28.560 +41 51 27.13   18       ~ 175 0
18 Z 311-8 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 357 2
19 Z 331-51 GiG 08 37 03.00 +69 46 31.0 15.70 15.46 14.98 14.89   ~ 316 0
20 LEDA 86668 LSB 09 02 53.357 +20 04 32.21   16.9       ~ 108 0
21 Z 332-57 LSB 09 40 32.33 +71 10 56.0 14.53 14.00 13.66 13.41   ~ 372 1
22 NAME F12D1 G 09 50 10.0 +67 30 24   15.6       ~ 58 1
23 LEDA 28529 G 09 53 48.8 +68 58 09   18.89       ~ 97 1
24 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
25 NAME Arp Loop G 09 57 29.0 +69 16 20           ~ 71 1
26 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
27 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
28 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
29 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
30 UGC 5428 AG? 10 05 06.40 +66 33 32.0 17.89 16.82 16.09 15.73   ~ 113 1
31 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
32 LEDA 4689216 GiG 10 21 25.2 +71 06 58           ~ 62 0
33 Z 333-35 GiG 10 30 35.03 +70 37 07.2 14.81 13.69 13.01 12.73   ~ 140 0
34 MCG+11-13-039 GiG 10 49 36.412 +65 32 01.07 15.55 15.27 14.79 14.55   ~ 170 0
35 LEDA 32667 LSB 10 52 55.1 +69 32 46   17.2       ~ 88 1
36 Z 351-62 bCG 11 27 59.90 +78 59 39.0   14.50       ~ 346 1
37 Z 242-46 bCG 11 33 29.12 +49 14 17.4 14.69 14.61 14.25 14.17   ~ 242 1
38 NGC 3738 AGN 11 35 48.982 +54 31 24.70   12.12 12.04 11.56   ~ 303 0
39 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 237 0
40 Z 214-32 AG? 11 50 52.98254 +38 52 50.6594   13.72 13.9 13.39   ~ 175 0
41 Z 157-55 AG? 11 55 39.7060218792 +31 31 06.535928784   15.7       ~ 138 0
42 NGC 4163 LSB 12 12 09.34 +36 10 08.1 14.33 13.70 13.2 12.98   ~ 238 0
43 NGC 4190 LSB 12 13 44.765 +36 38 02.49 13.88 13.40 13.25 12.86   ~ 224 0
44 UGCA 276 G 12 14 57.9 +36 13 07 17.66 16.85 16.22 15.92   ~ 105 1
45 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
46 Z 269-49 AG? 12 15 46.626 +52 23 13.91   15.3       ~ 75 0
47 Z 244-18 bCG 12 26 15.69 +48 29 38.3   15.3       ~ 364 0
48 Z 187-44 GiP 12 27 05.566 +37 08 30.39   14.19   13.55   ~ 217 0
49 Z 216-4 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 270 0
50 Z 159-13 GiC 12 32 54.5 +31 32 30   13.50   13.03   ~ 180 0
51 NAME CVn I dwA GiC 12 38 40.06 +32 46 00.5 16.91 16.66 16.73 16.62   ~ 242 0
52 Z 270-22 bCG 12 46 56.426 +51 36 46.80   14.1       ~ 119 0
53 NGC 4789A GiC 12 54 05.248 +27 08 58.67 14.37 14.23 13.95 13.84   ~ 614 1
54 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
55 Z 316-9 AG? 13 06 24.85 +67 42 25.0 14.08 13.61 13.08 12.98   ~ 268 1
56 MCG+08-24-090 AG? 13 13 22.839 +46 19 21.71   17       ~ 135 1
57 Z 245-36 AG? 13 14 27.997 +45 55 11.14 13.63 13.26 13.02 12.81   ~ 297 0
58 Z 271-48 EmG 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 218 0
59 Z 218-34 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 165 0
60 Z 190-66 AG? 13 50 51.3127548768 +38 01 14.958828876 15.56 14.78   14.33   ~ 161 0
61 LEDA 2807150 LSB 13 54 33.356 +04 14 39.66   16.8 17.1     ~ 89 0
62 MCG+06-31-023 AG? 13 54 48.8114 +35 50 07.775   16.5   15.20   ~ 123 1
63 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 3138 2
64 LEDA 166185 G 14 07 10.1 +35 03 37   16.9 17.2     ~ 94 0
65 Z 133-19 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 296 0
66 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
67 LEDA 2801026 LSB 16 13 47.504 +54 22 08.25     15.9     ~ 115 0
68 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
69 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
70 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
71 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
72 LEDA 2807157 GiG 23 45 35.177 +38 43 05.09   16.7 15.2     ~ 93 1
73 NAME Local Group GrG ~ ~           ~ 9325 0

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