2012ApJ...754L..37S


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.24CET12:21:08

2012ApJ...754L..37S - Astrophys. J., 754, L37 (2012/August-1)

A double cluster at the core of 30 Doradus.

SABBI E., LENNON D.J., GIELES M., DE MINK S.E., WALBORN N.R., ANDERSON J., BELLINI A., PANAGIA N., VAN DER MAREL R. and MAIZ-APELLANIZ J.

Abstract (from CDS):

Based on an analysis of data obtained with the Wide Field Camera 3 on the Hubble Space Telescope we report the identification of two distinct stellar populations in the core of the giant H II region 30 Doradus in the Large Magellanic Cloud. The most compact and richest component coincides with the center of R136 and is ∼1 Myr younger than a second more diffuse clump, located ∼5.4 pc toward the northeast. We note that published spectral types of massive stars in these two clumps lend support to the proposed age difference. The morphology and age difference between the two sub-clusters suggests that an ongoing merger may be occurring within the core of 30 Doradus. This finding is consistent with the predictions of models of hierarchical fragmentation of turbulent giant molecular clouds, according to which star clusters would be the final products of merging smaller sub-structures.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters: individual: 30 Doradus - galaxies: star formation - Magellanic Clouds

Simbad objects: 20

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Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9230 1
2 NGC 346 Cl* 00 59 05.090 -72 10 33.24           ~ 443 0
3 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5072 1
4 NGC 604 HII 01 34 32.1 +30 47 01           ~ 540 0
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5498 1
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14544 1
7 Brey 74a WR* 05 37 51.3383720439 -69 09 46.692195685 12.483 13.474 13.446 13.62 13.278 O3If* 29 0
8 NGC 2060 SNR 05 37 51.4470067818 -69 10 23.957283532   9.69 9.59     ~ 317 2
9 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1029 2
10 RMC 140a WR* 05 38 41.600 -69 05 13.39   12.18 12.12     WN4+WC5 28 0
11 RMC 140 WR* 05 38 41.62 -69 05 14.0   11.213 11.616     WN7+WC4/5pec 75 0
12 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 320 1
13 RMC 136 Cl* 05 38 42.396 -69 06 03.36   9.63 9.50     ~ 1698 2
14 RMC 142 s*b 05 38 42.742 -69 05 42.44   12.11 11.82     B0Ia 27 0
15 RMC 141 s*b 05 38 45.5859 -69 05 47.772   12.71 12.49     BN0.5Ia 26 0
16 W61 7-8 s*r 05 38 48.4697651414 -69 05 32.693368390   15.928 13.617   11.044 M3.5Ia 17 0
17 Mrk 30 G 10 19 38.280 +57 25 06.82   17.0       ~ 18 0
18 Mrk 33 IG 10 32 31.956 +54 24 03.53 13.29 13.66 13.13 12.71 12.27 ~ 320 1
19 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 454 0
20 NAME Local Group GrG ~ ~           ~ 6802 0

    Equat.    Gal    SGal    Ecl

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2020.02.24-12:21:08

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