2004A&A...425..937D

Query : 2004A&A...425..937D

2004A&A...425..937D - Astronomy and Astrophysics, volume 425937-948 (2004/10-3)

The origin of massive O-type field stars. I. A search for clusters.

DE WIT W.J., TESTI L., PALLA F., VANZI L. and ZINNECKER H.

Abstract (from CDS):

We present a study aimed at clarifying the birthplace for 43 massive O-type field stars. In this first paper we present the observational part: a search for stellar clusters near the target stars. We derive stellar density maps at two different resolving scales, viz. ∼0.25pc and ∼1.0pc from NTT and TNG imaging and the 2MASS catalogue. These scales are typical for cluster sizes. The main result is that the large majority of the O-type field population are isolated stars: only 12% (5 out of 43) of the O-type field stars is found to harbour a small-scale stellar cluster. We review the literature and aim at characterizing the stellar field of each O-type field star with the emphasis on star formation and the presence of known young stellar clusters. An analysis of the result of this paper and a discussion of the O-type field population as products of a dynamical ejection event is presented in an accompanying paper.

Abstract Copyright: ∼

Journal keyword(s): stars: early-type - stars: formation

Simbad objects: 102

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Number of rows : 102
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 V* AO Cas SB* 00 17 43.0633133256 +51 25 59.116450728 5.04 6.01 6.14     O9.2II+O8V((f)) 335 0
2 1RXS J001747.4+512549 X 00 17 47.4 +51 25 49           ~ 1 0
3 HD 5005 ** 00 52 49.21342 +56 37 39.5227 7.02         ~ 147 0
4 HD 14947 s*b 02 26 46.9899705528 +58 52 33.118732380 7.83 8.44 7.98     O4.5If 262 0
5 IRAS 02245+5217 FIR 02 27 59.3 +52 31 02           ~ 2 0
6 HD 15137 SB* 02 27 59.8113542520 +52 32 57.589857672 7 7.92 7.86     O9.5II-IIIn 143 0
7 HD 36879 * 05 35 40.5264730272 +21 24 11.719601856 6.97 7.69 7.58     O7V(n)((f))z 157 0
8 HD 245310 Be* 05 36 23.0151248448 +21 11 11.450793444 8.48 9.17 8.96     B2:III:nnpe 56 0
9 HD 39680 Be* 05 54 44.7315378936 +13 51 17.064365364 7.05 8.01 7.99     O6V:[n]pevar 128 0
10 V* Z Ori SB* 05 55 50.9310168144 +13 41 41.979489792   10.01 9.98     B3 54 0
11 HD 41161 * 06 05 52.4562749544 +48 14 57.417890532 5.66 6.658 6.764     O8Vn 139 0
12 NAME Rosette OB Association As* 06 31.7 +04 58           ~ 148 0
13 HD 46149 Y*O 06 31 52.5319291296 +05 01 59.178678024 7.03 7.80 7.61 7.54 7.36 O8.5V 288 0
14 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
15 HD 47432 Pu* 06 38 38.1872868432 +01 36 48.675208608 5.67 6.44 6.31 6.11 6.04 O9.7Ib 194 1
16 HD 48149 * 06 40 06.4195838064 -39 18 44.656827696   10.14 9.52     G2/3V 19 3
17 HD 48279 * 06 42 40.5471009337 +01 42 58.252284586 7.26 8.02 7.96 8.72   O8.5VzNstrvar? 173 0
18 IRAS 06400+0146 IR 06 42 41.4 +01 43 27           ~ 2 0
19 HD 289038 * 06 43 54.5603804616 +01 23 34.183083912   10.16 9.97     A2 5 0
20 Cl Dolidze 25 OpC 06 45 06 +00 18.0   8.19 7.6     ~ 79 1
21 HD 52266 SB* 07 00 21.0763468632 -05 49 35.954203044 6.32 7.22 7.23     O9.5IIIn 125 0
22 1RXS J070126.3-030704 X 07 01 26.3 -03 07 04           ~ 2 0
23 HD 52533 SB* 07 01 27.0486333888 -03 07 03.286283952 6.66 7.57 7.68     O8.5IVn 123 0
24 BD-02 1886 * 07 01 27.2168340072 -03 06 40.750128864   9.20 8.71     K0III-IVp 12 0
25 Ass CMa OB 1 As* 07 07.0 -10 28           ~ 161 0
26 1RXS J072201.7-085844 X 07 22 01.7 -08 58 44           ~ 1 0
27 HD 57682 * 07 22 02.0546074728 -08 58 45.766323408 5.20 6.24 6.43     O9.2IV 275 0
28 HD 60848 Be* 07 37 05.7325392528 +16 54 15.300327852 5.55 6.67 6.87     O8:V:pe 150 0
29 NAME GUM Nebula ISM 07 43 -42.1           ~ 454 1
30 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1190 1
31 HD 71304 * 08 24 55.7882010048 -44 18 03.006513144 8.52 8.98 8.45 7.93 7.51 O9II 78 0
32 HD 75222 s*b 08 47 25.1378783304 -36 45 02.670440616 7.24 7.80 7.42 8.22   O9.7Iab 102 0
33 Ass Vel OB 1 As* 08 49.9 -45 00           ~ 104 0
34 HD 89137 * 10 15 40.0854126480 -51 15 24.093239544 7.02 7.93 7.97 8.82   ON9.7II(n) 105 0
35 IRAS 10137-5059 IR 10 15 43.8 -51 14 20           ~ 4 0
36 HD 91452 * 10 31 50.5952642688 -63 56 25.690580484 7 8.83 8.60 8.35   B0III 63 1
37 HD 96088 * 11 04 00.2319399264 -57 57 19.217568888 5.16 5.96 6.13     B2III 43 0
38 HD 96917 V* 11 08 42.6179945208 -57 03 56.913146676 6.46 7.29 7.21 7.04 6.89 O8Ib(n)(f) 114 0
39 HD 105627 SB* 12 09 44.5819662312 -62 34 54.626272356 7.31 8.21 8.19 9.05   O9III 88 0
40 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 275 0
41 HD 112147 Be* 12 55 08.4592556760 -59 01 07.420634076 8.54 9.316 9.13 9.58   Be 56 0
42 HD 112244 s*b 12 55 57.1336250856 -56 50 08.900570292 4.49 5.33 5.32 5.21 5.21 O8.5Iab(f)p 217 0
43 Ass Cen OB 1 As* 13 02 -61.4           ~ 107 0
44 V* V340 Mus EB* 13 06 32.3469119472 -65 04 49.533683556 7.19 8.01 7.90 9.09   O9IV 44 0
45 Cl Stock 16 OpC 13 19 26.4 -62 37 19           ~ 95 0
46 GUM 48a HII 13 19 46 -62 30.7           ~ 29 1
47 HD 117856 * 13 34 43.4076221487 -63 20 07.617046801 6.92 7.57 7.44     O9.7II-III 54 0
48 HD 120578 * 13 52 22.0853201496 -62 46 29.832671388   8.00 8.00     B5II 15 0
49 HD 120634 * 13 52 36.4623660120 -62 36 40.671163224   9.70 9.69     B2(III) 7 0
50 HD 120678 Em* 13 52 56.4133904568 -62 43 14.260321632 7.04 9.45 8.20 9.02   O9.5Ve 76 0
51 HD 122879 V* 14 06 25.1578487688 -59 42 57.254187024 5.90 6.64 6.50 6.33 6.18 B0Ia 182 1
52 HD 123056 SB* 14 07 25.6396562448 -60 28 14.155719348 7.54 8.28 8.14 9.00   O9.5IV(n) 68 0
53 IRAS 14040-6014 Mi* 14 07 37.3626343440 -60 29 07.148547204         16.864 ~ 5 0
54 HD 124314 ** 14 15 01.60615 -61 42 24.3831   8.96 6.64 6.45 6.31 O6V(n)((f)) 155 0
55 IRAS 14143-6108 Mi* 14 18 03.1324847376 -61 21 59.441190696         18.203 ~ 5 0
56 HD 125206 * 14 20 09.0397470528 -61 04 54.621382980 7.47 8.18 7.92 8.89   O9.7IVn 70 1
57 RCW 85 HII 14 20.7 -61 24           ~ 15 1
58 IRAS 14183-6044 FIR 14 22 06.4 -60 58 24           ~ 2 0
59 NGC 5606 OpC 14 27 49.7 -59 37 45           ~ 109 0
60 * del Cir SB* 15 16 56.8959099600 -60 57 26.120078136 4.11 5.03 5.09 6.68   O8V 170 0
61 HD 135591 * 15 18 49.1432685384 -60 29 46.795963020 4.46 5.36 5.46 6.91   O8IV((f)) 169 0
62 HD 135786 * 15 19 54.0604784376 -60 33 40.578799032 7.29 7.90 7.96     B2/3IV 22 0
63 NAME Sco OB 1 As* 16 53.5 -41 57           ~ 222 0
64 HD 153426 * 17 01 13.0078001616 -38 12 11.886304536 6.79 7.61 7.47 8.49   O8.5III 104 0
65 HD 153919 HXB 17 03 56.7725629224 -37 50 38.913331452 6.06 6.78 6.51 6.08 5.90 O6Iafcp 851 0
66 NGC 6281 OpC 17 04 44.6 -37 57 08           ~ 156 0
67 HD 154368 s*b 17 06 28.3687759224 -35 27 03.760593156 6.10 6.63 6.13 7.12   O9.5Iab 316 0
68 IRAS 17031-3522 * 17 06 30.87864 -35 26 33.5256           ~ 2 0
69 HD 154643 SB* 17 08 13.9817547216 -35 00 15.671611152 6.76 7.42 7.20 8.23   O9.7III 62 1
70 IRAS 17060-4657 IR 17 09 47.1 -47 00 46           ~ 2 0
71 HD 154811 * 17 09 53.0865607752 -47 01 53.186262060 6.71 7.32 6.98 7.71   OC9.7Ib 94 0
72 Cl Bochum 13 OpC 17 17 17.7 -35 32 30   7.84 7.2     ~ 69 0
73 RCW 133 HII 17 29.2 -31 38           ~ 5 0
74 BBW 32300 HII 17 29.2 -31 32           ~ 2 0
75 HD 158186 EB? 17 29 12.9252525072 -31 32 03.427372140 6.22 7.07 7.04 7.93   O9.5V(n) 97 0
76 IRAS 17260-3129 MIR 17 29 15.4 -31 31 27           ~ 2 0
77 SH 2-13 HII 17 30.4 -31 33           ~ 7 0
78 NGC 6383 OpC 17 34 41.6 -32 34 27           ~ 168 0
79 Cl Collinder 347 OpC 17 46 23 -29 19.5   9.42 8.8     ~ 34 0
80 2MASS J17491648-3115080 * 17 49 16.5035046096 -31 15 07.956891864           ~ 3 0
81 HD 161853 ** 17 49 16.5582018192 -31 15 18.068754204 7.48 8.11 7.97 8.81   O8V(n)z+B 77 2
82 LMH 8 HII 17 49.3 -31 15           ~ 15 1
83 HD 163758 s*b 17 59 28.3669369416 -36 01 15.589420824 6.46 7.35 7.32 8.38   O6.5Iafp 163 0
84 HD 163924 * 18 00 11.4274497264 -35 38 57.121211184 8.19 8.93 8.98     B2III 23 0
85 HD 165319 * 18 05 58.8359515224 -14 11 52.998222768 8.15 8.63 8.04 7.50 7.00 O9.7Ib 86 1
86 Ass Sgr OB 1 As* 18 06 -22.8           ~ 128 0
87 RCW 158 HII 18 06.3 -14 12           ~ 6 0
88 LS 4657 * 18 06 18.1176871104 -13 42 48.207363336 13.1 13.04 11.84 11.60   OB+ 10 0
89 LBN 018.45+01.87 HII 18 17 52.5 -11 40 58           ~ 60 1
90 NGC 6604 OpC 18 18 03 -12 14.5           ~ 146 0
91 IRAS 18223-1243 Y*O 18 25 10.9307288448 -12 42 15.754722912           ~ 67 1
92 V* RY Sct Be* 18 25 31.4771300232 -12 41 24.192361500 10.25 10.38 9.12 9.46   O9.7Ibep 311 2
93 HD 175754 Em* 18 57 35.7085336776 -19 09 11.264191704 5.99 6.96 7.03     O8II(n)((f))p 152 0
94 HD 175876 * 18 58 10.7660947512 -20 25 25.541961636 5.79 6.82 6.94 6.93   O6.5III(n)(f) 154 0
95 HD 188209 s*b 19 51 59.0687638680 +47 01 38.419078944 4.61 5.55 5.63 5.54 5.64 O9.5Iab 322 0
96 HD 188439 Pu* 19 53 01.2463552968 +47 48 27.793662768 5.24 6.147 6.279     B0.5IIIn 111 1
97 HD 193793 WR* 20 20 27.9757908696 +43 51 16.286840244 6.90 7.25 6.85 4.58   WC7pd+O5.5fc 754 0
98 HD 195592 s*b 20 30 34.9690901208 +44 18 54.859533372 7.75 7.95 7.08 6.29 5.60 O9.7Ia 221 1
99 NAME W 75N IR Cluster Cl* 20 38 37.5 +42 37 57           ~ 8 0
100 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1121 0
101 HD 201345 * 21 07 55.4150161776 +33 23 49.228548972   7.611 7.764     ON9.2IV 186 0
102 HD 202124 s*b 21 12 28.3896178416 +44 31 54.129118980 7.33 7.94 7.76     O9Iab 104 0

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