2012MNRAS.421.3206S

Query : 2012MNRAS.421.3206S

2012MNRAS.421.3206S - Mon. Not. R. Astron. Soc., 421, 3206-3216 (2012/April-3)

The embedded cluster or association Trumpler 37 in IC 1396: a search for evolutionary constraints.

SAURIN T.A., BICA E. and BONATTO C.

Abstract (from CDS):

It is currently widely accepted that open star clusters and stellar associations result from the evolution of embedded star clusters. Parameters such star formation efficiency, time-scale of gas removal and velocity dispersion can be determinants of their future as bound or unbound systems. Finding objects at an intermediate evolution state can provide constraints to model the embedded cluster evolution. In the H II region IC 1396, Trumpler 37 is an extended young cluster that presents characteristics of an association. We employed the Two Micron All Sky Survey (2MASS) photometry for analysing its structure and stellar content, and determining its astrophysical parameters. We also analysed 11 bright-rimmed clouds in IC 1396 in order to search for young infrared star clusters, and the background open star cluster Teutsch 74, to verify whether it has any contribution to the observed stellar density profile of Trumpler 37. The derived parameters and comparison with template objects from other studies lead us to conclude that Trumpler 37, rather than as a star cluster, will probably emerge from its molecular cloud as an OB association.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): open clusters and associations: individual: Trumpler 37 - open clusters and associations: individual: Teutsch 74

Simbad objects: 48

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Number of rows : 48
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 188 OpC 00 47 14.8 +85 14 42           ~ 990 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 547 0
4 SNR B0057-72.2 SNR 00 59 27.40 -72 10 10.7   12.37 12.57     ~ 251 0
5 V* T Tau TT* 04 21 59.4319873992 +19 32 06.432393336   11.22 10.12 9.80   K0IV/Ve 1456 1
6 Cl Bochum 1 OpC 06 25 18 +19 46.8   8.08 7.9     ~ 52 1
7 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
8 M 41 OpC 06 46 03.1 -20 43 07   4.89 4.5     ~ 308 0
9 Cl VDB 92 OpC 07 04 11.3 -11 27 06           ~ 43 1
10 NGC 2447 OpC 07 44 34.6 -23 51 22           ~ 170 1
11 NGC 2477 OpC 07 52 11.4 -38 32 47   6.64 5.8     ~ 314 0
12 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
13 NGC 2548 OpC 08 13 34.0 -05 43 11           ~ 227 0
14 ESO 313-13 OpC 08 44 51.8 -41 17 02   7.01 6.7     ~ 95 0
15 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
16 NGC 3680 OpC 11 25 19.8 -43 14 38   8.40 7.6     ~ 340 0
17 NGC 4755 OpC 12 53 39.2 -60 22 07           ~ 300 0
18 NGC 5822 OpC 15 04 08.3 -54 21 52           ~ 238 0
19 IC 4651 OpC 17 24 48.5 -49 55 23           ~ 374 0
20 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
21 M 26 OpC 18 45 16.8 -09 23 14   8.0 8.87     ~ 112 0
22 NGC 6823 OpC 19 43 11.3 +23 18 32   7.71 7.1     ~ 279 2
23 [DB2002b] G96.80+4.66 DNe 21 21.0 +56 26           ~ 3 0
24 IRAS 21308+5710 Cld 21 32 23.7 +57 24 08           ~ 12 0
25 IRAS 21316+5716 Cld 21 33 12.2 +57 29 34           ~ 14 0
26 JCMTSF J213332.0+580332 Cld 21 33 32.4 +58 03 28           ~ 19 0
27 LDN 1083 DNe 21 33.6 +55 58           ~ 7 0
28 NAME Elephant Trunk Nebula MoC 21 36 +57.4           ~ 58 0
29 IRAS 21345+5818 Cld 21 36 05.5 +58 31 39           ~ 14 0
30 IRAS 21346+5714 Cld 21 36 12.4 +57 27 34           ~ 23 1
31 SH 2-131 HII 21 37 07 +57 30.9           ~ 51 1
32 LDN 1088 DNe 21 38.2 +56 14           ~ 9 0
33 IC 1396 OpC 21 38 51.4 +57 31 52           ~ 523 1
34 HD 206267 Y*O 21 38 57.6195772032 +57 29 20.554016280 5.09 5.83 5.62   5.56 O6.0V((f))+O9:V 520 0
35 HD 239729 Y*O 21 39 27.4057254792 +57 29 00.810299364 8.17 8.71 8.35   7.96 B0V 82 0
36 LDN 1101 DNe 21 39.6 +56 59           ~ 4 0
37 [G85] 12 CGb 21 40 29.5 +56 35 33           ~ 66 0
38 NAME IC 1396 North CGb 21 40 42.6537 +58 16 01.882           ~ 193 1
39 LDN 1134 DNe 21 41.5 +60 14           ~ 4 0
40 LDN 1130 DNe 21 44.6 +58 19           ~ 6 0
41 DSH J2145.6+5805 OpC 21 45 40.6 +58 05 43           ~ 22 1
42 IRAS 21445+5712 Or* 21 46 07.1269843296 +57 26 31.628449824           ~ 55 0
43 IRAS 21446+5655 Cld 21 46 14.7 +57 08 59           ~ 13 0
44 LDN 1129 DNe 21 46 27.1 +57 48 37           ~ 8 0
45 JCMTSE J214629.1+571831 Cld 21 46 29.3 +57 18 41           ~ 14 0
46 LDN 1118 DNe 21 46 36.8 +57 12 25           ~ 25 0
47 Ass Cep OB 2 As* 21 51 +60.0           ~ 303 0
48 [DB2002b] G102.12+3.03 DNe 21 58.9 +58 45           ~ 4 0

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