2001ApJ...563..151M

Query : 2001ApJ...563..151M

2001ApJ...563..151M - Astrophys. J., 563, 151-162 (2001/December-2)

Structural properties of massive young clusters.

MAIZ-APELLANIZ J.

Abstract (from CDS):

We have retrieved multicolor WFPC2/Hubble Space Telescope data from the STScI archive for 27 nearby massive (≳3x104 M☉) young (<20 Myr) star clusters (MYCs). The data represents the most complete sample of clearly resolved MYCs to date. We have analyzed their structural properties and have found that they can be classified as either super-star clusters (SSCs) or as scaled OB associations (SOBAs). SSCs have a compact core possibly surrounded by a halo while SOBAs have no core. A morphological sequence can be established from SSCs with weak halos to SSCs with strong halos to SOBAs, and we propose that this is linked to the original mass distribution of the parent giant molecular clouds. Our results indicate that a significant fraction of the stars in MYCs dissipate on timescales of 10 Gyr or less due to the extended character of some of the clusters. Also, SSCs with ages younger than 7 Myr have smaller cores on average than those with ages older than 7 Myr, confirming predictions of numerical simulations with mass loss.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Starburst - Galaxies: Star Clusters - Techniques: High Anular Resolution

Nomenclature: Table 2: [M2001c] I Zw 18-R (Nos I, II), [M2001c] NGC 1569-A) (Nos A to C), [M2001c] NGC 1705-I-A (Nos I-A, I-B), [M2001c] NGC 4449-A-N (Nos N-1, N-2).

CDS comments: Table 2: Cl* in NGC 2403 = [DRM99], in NGC 4214 = [MMP2000], in NGC 5253 = [CMB97] (using here roman numerals instead of arabic ones).

Simbad objects: 42

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Number of rows : 42
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 595 HII 01 33 33.53 +30 41 29.8           ~ 213 0
2 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
3 NGC 604 HII 01 34 32.1 +30 47 01           ~ 608 0
4 NAME NGC 1569 CL* C Cl* 04 30 47.26 +64 51 02.3   18.85 17.41     ~ 20 1
5 NAME NGC 1569 CL* A Cl* 04 30 48.2 +64 50 59   15.45 15.22     ~ 106 1
6 NAME NGC 1569 CL* B Cl* 04 30 49.0 +64 50 53           ~ 77 0
7 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
8 NAME NGC 1705 CL* A Cl* 04 54 13.24 -53 21 36.1           ~ 42 0
9 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 692 1
10 LHA 120-N 11 HII 04 56 51.4 -66 24 24           ~ 275 0
11 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
12 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 406 1
13 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
14 CXOU J073645.6+653659 HII 07 36 45.6 +65 36 59           ~ 27 0
15 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
16 HK NGC 2403 270 Cl* 07 36 52.13 +65 36 48.5           ~ 24 0
17 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
18 [CSG2002] SE 1 HII 09 34 02.610 +55 14 21.45           ~ 4 1
19 [MMP2000] IVs Cl* 12 15 37.3400 +36 19 58.200           ~ 6 0
20 [HSS2004] 10 Cl* 12 15 38.2700 +36 19 46.290           ~ 8 0
21 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
22 [MMP2000] I-A Cl* 12 15 39.5400 +36 19 36.490           ~ 9 0
23 [MMP2000] I-B Cl* 12 15 40.4000 +36 19 33.180           ~ 8 0
24 HK NGC 4214 54 Cl* 12 15 40.7200 +36 19 15.110           ~ 11 0
25 [MMM98b] Knot 15 Cl* 12 15 41.602 +36 19 13.20           ~ 5 0
26 [GHG2001] 1 GlC 12 28 11.088 +44 05 37.11 16.540 17.478 17.186   16.323 ~ 10 0
27 NGC 4449 EmG 12 28 11.118 +44 05 36.81 10.11 9.98 9.64 9.45   ~ 1192 1
28 [ATA2011] 43 Cl* 12 28 11.22 +44 05 38.1 16.440 17.43 17.25   16.93 ~ 9 0
29 [DAZ2013] 36 Cl* 13 39 55.456 -31 38 34.28           ~ 9 0
30 [DAZ2013] 38 Cl* 13 39 55.53 -31 38 29.7           ~ 18 0
31 [DAZ2013] 45 Cl* 13 39 55.58 -31 38 29.4           ~ 15 0
32 [DAZ2013] 129 Cl* 13 39 55.98 -31 38 31.9           ~ 23 0
33 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
34 NAME NGC 5353 Radio Supernebula Cl* 13 39 56.007 -31 38 25.00           ~ 51 0
35 NGC 5253C H2G 13 39 56.020 -31 38 27.89           ~ 33 0
36 [DRM99] NGC 2403 I B Cl* ~ ~           ~ 4 0
37 [HT95] HII 15 HII ~ ~           ~ 4 1
38 [MMP2000] I-D Cl* ~ ~           ~ 4 0
39 [MMP2000] VIn Cl* ~ ~           ~ 5 0
40 [MMP2000] Vn Cl* ~ ~           ~ 4 0
41 [DRM99] NGC 2403 I C Cl* ~ ~           ~ 4 0
42 [DRM99] NGC 2403 I A Cl* ~ ~           ~ 4 0

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