2012ApJ...751..100C

Query : 2012ApJ...751..100C

2012ApJ...751..100C - Astrophys. J., 751, 100 (2012/June-1)

The ACS nearby galaxy survey treasury. X. Quantifying the star cluster formation efficiency of nearby dwarf galaxies.

COOK D.O., SETH A.C., DALE D.A., JOHNSON L.C., WEISZ D.R., FOUESNEAU M., OLSEN K.A.G., ENGELBRACHT C.W. and DALCANTON J.J.

Abstract (from CDS):

We study the relationship between the field star formation and cluster formation properties in a large sample of nearby dwarf galaxies. We use optical data from the Hubble Space Telescope and from ground-based telescopes to derive the ages and masses of the young (tage ≲ 100 Myr) cluster sample. Our data provide the first constraints on two proposed relationships between the star formation rate (SFR) of galaxies and the properties of their cluster systems in the low SFR regime. The data show broad agreement with these relationships, but significant galaxy-to-galaxy scatter exists. In part, this scatter can be accounted for by simulating the small number of clusters detected from stochastically sampling the cluster mass function. However, this stochasticity does not fully account for the observed scatter in our data, suggesting that there may be true variations in the fraction of stars formed in clusters in dwarf galaxies. Comparison of the cluster formation and the brightest cluster in our sample galaxies also provide constraints on cluster destruction models.

Abstract Copyright: ∼

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

Nomenclature: Table 2: [CSD2012] NGC NNNN NN, [CSD2012] UGC NNNN NN, [CSD2012] IC NNNN NN, [CSD2012] UGC A292 10, N=44.

Simbad objects: 52

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Number of rows : 52
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 NGC 45 Sy2 00 14 04.0072128696 -23 10 55.132646808 11.92 11.21 10.73 10.58 10.4 ~ 269 1
2 ESO 350-38 Sy2 00 36 52.489 -33 33 17.23   14.31 14.41 13.49   ~ 450 0
3 ESO 540-30 AG? 00 49 20.96 -18 04 31.5   16.45   15.33   ~ 92 1
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
5 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 511 0
6 NGC 1313 AG? 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 723 2
7 SBSG 0335-052B G 03 37 44.04 -05 02 40.2   16.77 16.65   16.79 ~ 220 1
8 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
10 LEDA 95597 LSB 06 47 45.6 +80 07 27   16.4       ~ 74 0
11 NGC 2366 H2G 07 28 52.4529 +69 12 38.859 12.25 11.86 11.39 11.33   ~ 801 0
12 UGCA 133 G 07 34 11.5 +66 52 47 16.40 15.48 14.80 14.76   ~ 93 0
13 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
14 NAME M 81 Dwarf A G 08 23 55.1 +71 01 56   16.5       ~ 209 1
15 Z 311-8 GiG 08 34 07.20 +66 10 54.0 15.39 15.03 14.70 14.49   ~ 357 2
16 Z 332-57 LSB 09 40 32.33 +71 10 56.0 14.53 14.00 13.66 13.41   ~ 372 1
17 NAME F6D1 GiG 09 45 10.0 +68 45 54   17.5       ~ 53 0
18 NAME F12D1 G 09 50 10.0 +67 30 24   15.6       ~ 58 1
19 LEDA 28529 G 09 53 48.8 +68 58 09   18.89       ~ 97 1
20 LEDA 28731 G 09 57 02.7 +68 35 30   15.17       ~ 119 1
21 NAME Arp Loop G 09 57 29.0 +69 16 20           ~ 71 1
22 MCG+12-10-012 AG? 09 57 32.8632 +69 02 50.735 15.19 15.15 14.10 14.12   ~ 327 4
23 UGC 5428 AG? 10 05 06.40 +66 33 32.0 17.89 16.82 16.09 15.73   ~ 113 1
24 UGC 5442 AG? 10 07 01.90 +67 49 39.0 17.09 15.73 15.07 14.81   ~ 95 1
25 NAME IKN G 10 08 05.9 +68 23 57           ~ 82 0
26 LEDA 4689216 GiG 10 21 25.2 +71 06 58           ~ 62 0
27 DDO 78 G 10 26 27.9 +67 39 24   15.8       ~ 88 1
28 NGC 3256 Sy2 10 27 51.284 -43 54 13.55   11.83 11.33 10.62 11.9 ~ 920 2
29 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 703 1
30 Z 333-35 GiG 10 30 35.03 +70 37 07.2 14.81 13.69 13.01 12.73   ~ 140 0
31 LEDA 32667 LSB 10 52 55.1 +69 32 46   17.2       ~ 88 1
32 NGC 3741 AG? 11 36 05.754 +45 17 02.96 15.01 14.55 14.23 14.06   ~ 237 0
33 NGC 4163 LSB 12 12 09.34 +36 10 08.1 14.33 13.70 13.2 12.98   ~ 238 0
34 UGCA 276 G 12 14 57.9 +36 13 07 17.66 16.85 16.22 15.92   ~ 105 1
35 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
36 NAME CVn I dwA GiC 12 38 40.06 +32 46 00.5 16.91 16.66 16.73 16.62   ~ 242 0
37 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
38 Z 316-9 AG? 13 06 24.85 +67 42 25.0 14.08 13.61 13.08 12.98   ~ 268 1
39 Z 271-48 EmG 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 218 0
40 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
41 Z 218-34 AG? 13 39 53.75 +40 44 25.3 15.37 14.56 14.20 14.10   ~ 165 0
42 Z 190-66 AG? 13 50 51.3127548768 +38 01 14.958828876 15.56 14.78   14.33   ~ 161 0
43 MCG+06-31-023 AG? 13 54 48.8114 +35 50 07.775   16.5   15.20   ~ 123 1
44 LEDA 166185 G 14 07 10.1 +35 03 37   16.9 17.2     ~ 94 0
45 Z 133-19 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 296 0
46 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
47 ESO 338-4 EmG 19 27 58.338 -41 34 30.81   13.55 13.21 13.14 13.43 ~ 253 1
48 ESO 185-13 AGN 19 45 00.4907671728 -54 15 02.617201080 14.77 14.94 14.68 14.49 14.19 ~ 55 0
49 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
50 Mrk 930 AGN 23 31 58.630 +28 56 50.51 14.27 15.04 14.63 14.56 14.46 ~ 147 0
51 LEDA 2807157 GiG 23 45 35.177 +38 43 05.09   16.7 15.2     ~ 93 1
52 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1188 2

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