2011A&A...525A..17G


Query : 2011A&A...525A..17G

2011A&A...525A..17G - Astronomy and Astrophysics, volume 525A, 17-17 (2011/1-1)

Massive runaway stars in the Small Magellanic Cloud.

GVARAMADZE V.V., PFLAMM-ALTENBURG J. and KROUPA P.

Abstract (from CDS):

Using archival Spitzer Space Telescope data, we identified for the first time a dozen runaway OB stars in the Small Magellanic Cloud (SMC) through the detection of their bow shocks. The geometry of detected bow shocks allows us to infer the direction of motion of the associated stars and to determine their possible parent clusters and associations. One of the identified runaway stars, AzV471, was already known as a high-velocity star on the basis of its high peculiar radial velocity, which is offset by ≃40km/s from the local systemic velocity. We discuss implications of our findings for the problem of the origin of field OB stars. Several of the bow shock-producing stars are found in the confines of associations, suggesting that these may be ``alien'' stars contributing to the age spread observed for some young stellar systems. We also report the discovery of a kidney-shaped nebula attached to the early WN-type star SMC-WR3 (AzV60a). We interpreted this nebula as an interstellar structure created owing to the interaction between the stellar wind and the ambient interstellar medium.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: kinematics and dynamics - stars: massive - Magellanic Clouds

Simbad objects: 43

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Number of rows : 43
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 2MASS J00473071-7305038 EmO 00 47 30.71 -73 05 03.8           ~ 2 0
2 SMC ASS 13 As* 00 47 43 -73 21.4           ~ 6 0
3 DEM S 32 HII 00 47 43.9 -73 08 22           ~ 25 0
4 BBB SMC 266 s*b 00 47 50.0484011088 -73 08 21.054056928   12.35 12.55 12.36   O6I(f) 70 0
5 NGC 267 HII 00 48 02.6 -73 16 39           ~ 54 0
6 SMC ASS 16 As* 00 48 40 -73 25.8           ~ 7 0
7 LHA 115-N 30 Em* 00 49 01.8 -73 08 24     14.9     ~ 33 0
8 2MASS J00491413-7314426 * 00 49 14.1660943296 -73 14 42.673907112   13.33 13.37     ~ 2 0
9 NAME [B91] 6W HII 00 49 15 -72 52.8           ~ 12 0
10 SK 31 s*b 00 49 51.2735728512 -72 55 45.253625124   11.16 11.16     B2Ia 42 0
11 LIN 143 WR* 00 49 59.3505485400 -73 22 14.121279948 13.48 14.43 14.56   14.57 WN3/4+O4 37 0
12 LIN 156 s*b 00 50 32.4050818488 -72 52 36.441355908 11.553 12.604 12.756   12.89 O5.5I(f) 51 0
13 AzV 77 * 00 50 33.5144777088 -72 47 45.008016756 12.74 13.79 13.95   14.12 O7III 10 0
14 DEM S 54 HII 00 50 33.9 -72 53 26           ~ 17 1
15 SMC ASS 22 As* 00 50.6 -72 59   12.3       ~ 16 0
16 LHA 115-N 37 EmO 00 50 44.3 -72 46 40           ~ 25 0
17 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11287 1
18 NAME DEM S 68SE SNR 00 52 43.00 -72 37 06.0           ~ 43 0
19 SK 53 s*b 00 52 52.5021619968 -72 44 13.120918440 11.463 12.334 12.406   12.46 B2Iab 17 0
20 NGC 346 Cl* 00 59 04.4000 -72 10 39.000           ~ 497 0
21 HD 5980 WR* 00 59 26.5838833944 -72 09 53.927337312   11.13 11.31   11.029 WN4+O7I: 396 1
22 RMC 18 s*b 01 00 06.8830919184 -72 13 57.371461032   11.7 11.5     B1Ia 68 0
23 DEM S 118 HII 01 02 41.1 -72 24 41           ~ 12 0
24 NGC 371 OpC 01 03 25 -72 04.4           ~ 48 0
25 SNR B0102-72.3 SNR 01 04 01.2 -72 01 52           ~ 402 1
26 AzV 398 s*b 01 06 09.8134902360 -71 56 00.746371284 13.15 13.94 13.98   13.71 O9.7Ia 45 0
27 [BS95] 134 As* 01 06 25 -71 56.1           ~ 5 0
28 AzV 429 EB* 01 07 59.8335369624 -72 00 53.979262812 13.40 14.49 14.69   14.91 O7Vz 20 0
29 SK 151 s*b 01 13 00.3995614128 -73 17 04.124526036 12.66 13.62 13.63   13.41 O9.5I 23 0
30 NGC 456 HII 01 13 44.4 -73 17 26           ~ 127 0
31 LIN 500 Em* 01 13 50.896 -73 18 01.03   13.36 12.5 13.78 14.62 ~ 62 0
32 LHA 115-N 83C SNR 01 14 00.0 -73 17 08           ~ 71 0
33 LHA 115-N 84 HII 01 14 27.7 -73 12 51           ~ 65 0
34 LIN 547 WR* 01 31 04.1367366432 -73 25 03.784411524   12.75 12.90     WO4+O4V 97 0
35 Cl Lindsay 107 As* 01 31 08.83 -73 24 51.1           ~ 23 0
36 2MASS J01315497-7327234 * 01 31 54.9584072088 -73 27 23.505357420   14.52 14.61     O9.7(III)e: 7 0
37 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7179 0
38 Brey 2 WR* 04 49 36.2527075920 -69 20 54.744608760 15.633 16.495 16.579   16.447 WN2b(h) 35 0
39 HD 33133 WR* 05 03 08.9126630616 -66 40 57.492259824   12.46 12.63 12.85   WN7h 94 0
40 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17643 0
41 BI 237 * 05 36 14.6333257920 -67 39 19.168082640 12.865 13.790 13.830   13.948 O2V(f*) 37 0
42 HD 89358 WR* 10 17 02.2743231360 -57 54 46.875258324 11.1 11.19 10.83 10.59   WN4-s 174 1
43 HD 192163 WR* 20 12 06.5418877464 +38 21 17.784181008 7.12 7.49 7.50     WN6(h)-s 546 0

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