2017ApJ...835..171S

Query : 2017ApJ...835..171S

2017ApJ...835..171S - Astrophys. J., 835, 171-171 (2017/February-1)

The VMC Survey. XXII. Hierarchical star formation in the 30 Doradus-N158-N159-N160 star-forming complex.

SUN N.-C., DE GRIJS R., SUBRAMANIAN S., CIONI M.-R.L., RUBELE S., BEKKI K., IVANOV V.D., PIATTI A.E. and RIPEPI V.

Abstract (from CDS):

We study the hierarchical stellar structures in a ∼1.5 deg2 area covering the 30 Doradus-N158-N159-N160 star-forming complex with the VISTA Survey of Magellanic Clouds. Based on the young upper main-sequence stars, we find that the surface densities cover a wide range of values, from log(Σ⋅pc2) <= -2.0 to log(Σ⋅pc2) >= 0.0. Their distributions are highly non-uniform, showing groups that frequently have subgroups inside. The sizes of the stellar groups do not exhibit characteristic values, and range continuously from several parsecs to more than 100 pc; the cumulative size distribution can be well described by a single power law, with the power-law index indicating a projected fractal dimension D2 = 1.6 ± 0.3. We suggest that the phenomena revealed here support a scenario of hierarchical star formation. Comparisons with other star-forming regions and galaxies are also discussed.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: clusters: general - infrared: stars - Magellanic Clouds - stars: formation - stars: formation

Simbad objects: 35

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Number of rows : 35
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 547 0
3 SNR B0057-72.2 SNR 00 59 27.40 -72 10 10.7   12.37 12.57     ~ 251 0
4 NGC 345 GiG 01 01 22.0870895832 -06 53 03.338818116   13.5       ~ 21 0
5 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
6 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1934 1
7 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
8 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
10 NGC 2015 As* 05 32 08.300 -69 14 33.25   10.56 10.43     ~ 25 0
11 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
12 NGC 2044 As* 05 36 11 -69 11.8   10.69 10.59     ~ 89 0
13 LH 89 As* 05 36.2 -68 57           ~ 19 0
14 NGC 2050 As* 05 36 36 -69 24.2   9.47 9.25     ~ 25 0
15 NGC 2055 As* 05 36 44 -69 29.9   8.51 8.39     ~ 26 0
16 LH 98 As* 05 36 46 -69 26.5   10.43 10.38     ~ 12 0
17 LH 96 As* 05 37 15 -69 29.2           ~ 24 0
18 LH 97 As* 05 37 30 -69 20.6   10.11 9.97     ~ 18 0
19 LH 99 As* 05 37.8 -69 10           ~ 54 0
20 NAME 30 Dor Region reg 05 38.0 -69 06           ~ 261 0
21 H88 301 Cl* 05 38 16 -69 04.0   11.18 10.89     ~ 80 0
22 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
23 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 406 1
24 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
25 NGC 2074 As* 05 39 03 -69 29.9           ~ 66 0
26 LHA 120-N 158 HII 05 39 11.220 -69 30 13.65           ~ 93 0
27 LHA 120-N 159 HII 05 39 46.650 -69 45 39.94           ~ 293 2
28 LHA 120-N 160 EmO 05 39 47.9 -69 37 08           ~ 128 1
29 LH 105 As* 05 39 54 -69 44.9   9.00 8.73     ~ 28 0
30 LH 103 As* 05 39 57 -69 39.6   8.50 8.09     ~ 31 0
31 LH 104 As* 05 39 59 -69 24.1   10.13 9.94     ~ 43 0
32 LH 111 As* 05 42 09 -69 12.6           ~ 28 0
33 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
34 NGC 6503 LIN 17 49 26.4207792072 +70 08 39.604132176 11.56 10.95 10.28 9.92   ~ 551 1
35 NAME Local Group GrG ~ ~           ~ 9325 0

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