2001A&A...380..137B

Query : 2001A&A...380..137B

2001A&A...380..137B - Astronomy and Astrophysics, volume 380, 137-141 (2001/12-2)

The ionising cluster of 30 Doradus. IV. Stellar kinematics.

BOSCH G., SELMAN F., MELNICK J. and TERLEVICH R.

Abstract (from CDS):

On the basis of multislit spectroscopy of 180 stars in the ionising cluster of 30 Doradus we present reliable radial velocities for 55 stars. We calculate a radial velocity dispersion of ∼35km/s for the cluster and we analyse the possible influence of spectroscopic binaries in this rather large velocity dispersion. We use numerical simulations to show that the observations are consistent with the hypothesis that all the stars in the cluster are binaries, and the total mass of the cluster is ∼5x105M☉. A simple test shows only marginal evidence for dynamical mass segregation which if present is most likely not due to dynamical relaxation.

Abstract Copyright: ∼

Journal keyword(s): stars: early-type - stars: kinematics - binaries: spectroscopic - galaxies: clusters: general - galaxies: Magellanic Clouds

Simbad objects: 56

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Number of rows : 56
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17428 0
2 2MASS J05382227-6907508 SB* 05 38 22.2707420160 -69 07 50.815159752   15.34 15.33     O8.5V(n)+sec 11 0
3 Cl* NGC 2070 MEL 70 SB* 05 38 23.3085155424 -69 07 16.083034932 13.332 14.261 14.169   14.051 O9III+O9.2V 17 0
4 2MASS J05382805-6906290 SB* 05 38 28.0597550112 -69 06 29.059975296   15.07 14.95     O8V 13 0
5 [P93] 222 * 05 38 30.740 -69 08 27.13   15.69 15.74     O9.7III 13 0
6 2MASS J05383279-6903195 SB* 05 38 32.7931547640 -69 03 19.551742452   15.63 15.49     O5-6V(n)((fc))z 10 0
7 Cl* NGC 2070 MEL 57 SB* 05 38 36.8560614720 -69 04 58.321196184   14.58 14.69     O7.5-8V 14 0
8 IRSF J05383782-6903290 SB* 05 38 37.810 -69 03 28.93   15 15.07     O9.5V 11 0
9 [P93] 649 * 05 38 38.5 -69 04 16   15.398 15.344     O8.5V 4 0
10 Cl* NGC 2070 SMB 72 * 05 38 39.4792951992 -69 05 10.410902700   14.64 14.78   14.87 O5V 9 0
11 2MASS J05383981-6903413 SB* 05 38 39.82 -69 03 41.3   16.04 15.90     O4-5V((fc))z 10 0
12 2MASS J05384074-6908249 * 05 38 40.7229658680 -69 08 24.931087044 15.347 16.015 15.808   15.458 O6V((f))z 13 0
13 Cl* NGC 2070 SMB 80 * 05 38 40.7995410744 -69 05 25.157960520   14.596 14.65   14.47 O5.5V 9 0
14 Cl* NGC 2070 MH 203 * 05 38 41.515 -69 06 00.83   14.28 13.67     O3V 11 0
15 Cl* NGC 2070 MEL 25 SB* 05 38 41.5495267078 -69 05 19.506347564   13.33 13.31   13.36 ON2V((n))((f*)) 25 0
16 Cl* NGC 2070 SMB 138 SB* 05 38 41.940 -69 06 29.62   15.38 15.11   14.69 O3.5III(f*) 16 0
17 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 378 1
18 VFTS 521 ** 05 38 42.0154 -69 07 04.979   15.51 15.34     O9V(n) 14 0
19 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2018 2
20 [P93] 975 * 05 38 42.6 -69 05 36     14.3     ~ 5 0
21 MH 12 SB* 05 38 43.026 -69 04 13.15   13.96 13.99     ON9Ia:+O7.5:I:(f): 18 0
22 2MASS J05384305-6903447 * 05 38 43.0359744336 -69 03 44.880387876   16.06 15.99     O5V((fc))z 12 0
23 2MASS J05384358-6907516 * 05 38 43.5869910648 -69 07 51.926774124   16.86 16.51     O6.5Vz 11 0
24 2MASS J05384388-6903164 SB* 05 38 43.9082129880 -69 03 16.379656344   15.96 15.88     O9.5Vz 9 0
25 [P93] 10003 * 05 38 44.06 -69 05 16.3           B1.2V 3 0
26 Cl* NGC 2070 SMB 350 * 05 38 44.350 -69 06 40.73   16.64 16.59   16.57 O9.5V 16 0
27 MH 31 * 05 38 44.5650276384 -69 04 51.259890828   14.11 14.05     O3III(f*) 23 0
28 Cl* NGC 2070 SMB 128 * 05 38 44.910 -69 05 33.10   15.13 15.11   15.17 B0.7III 12 0
29 2MASS J05384539-6902514 pA? 05 38 45.3901880400 -69 02 51.448462044 13.564 14.574 14.491 13.97 14.826 O4V((n))((fc))z 16 0
30 [P93] 1247 * 05 38 45.5910727320 -69 07 34.932550872   15.98 15.83     B0.5V(SB2?) 12 0
31 [P93] 1283 * 05 38 46.0 -69 05 53   16.362 17.653     ~ 2 0
32 2MASS J05384705-6905016 * 05 38 47.06 -69 05 01.7   17.697 17.740     B0IV 5 0
33 Cl* NGC 2070 SMB 219 SB* 05 38 47.170 -69 05 54.40   15.94 15.78   15.67 O8.5Vz 11 0
34 [P93] 1389 * 05 38 47.4637391208 -69 07 13.482208848   16.57 16.48     B0.5:V 10 0
35 2MASS J05384814-6907415 * 05 38 48.1367289456 -69 07 41.600938944 15.250 15.874 15.516   15.772 B0.2V 12 0
36 2MASS J05384889-6908279 SB* 05 38 48.8703949800 -69 08 28.118310180 15.549 16.260 16.281   15.802 O9.7III(n) 12 0
37 OGLE LMC553.25.008162 EB* 05 38 48.8888836488 -69 08 55.352931648   16.09 15.97   15.855 B2Vn 10 0
38 Cl* NGC 2070 SMB 174 SB* 05 38 49.0412352408 -69 06 19.664990568   15.59 15.52   15.54 O9.5IV 13 0
39 W61 7-10 Y*? 05 38 49.7234755368 -69 06 43.060485816   13.25 13.09   12.97 B0.5:I 18 0
40 W61 7-12 SB* 05 38 50.4026954184 -69 05 38.266265256   14.24 14.16   14.17 O5.5IV(f) 20 0
41 W61 7-13 SB* 05 38 51.00 -69 05 54.7   14.78 14.70   14.71 O7V(n)z 16 0
42 W61 7-16 * 05 38 51.2007715584 -69 05 59.386365744   14.3 14.24   14.30 O7.5III(n)((f))p 19 0
43 Cl* NGC 2070 SMB 229 * 05 38 51.7590385248 -69 06 01.238651568   16 15.96   16.03 B0-0.5V(n) 12 0
44 2MASS J05385270-6907286 * 05 38 52.7395741032 -69 07 28.762078440   16.54 16.43     B0.5V 9 0
45 W61 7-18 SB* 05 38 52.9704587472 -69 07 45.406012188 13.795 14.467 14.242   13.848 O8Ib(f) 16 0
46 W61 7-17 * 05 38 52.9840040280 -69 08 11.624624196 14.504 15.004 14.857   14.735 B0.5III 6 0
47 2MASS J05385364-6908116 * 05 38 53.6530931520 -69 08 11.691259332 14.927 15.746 15.725   15.327 O5V 4 0
48 W61 7-21 * 05 38 54.0954791232 -69 08 07.720087812 14.032 14.713 14.579   14.020 B0.7IINwk? 12 0
49 W61 7-22 * 05 38 54.7944892080 -69 08 44.367414864 13.327 14.041 13.965   13.678 B1II 6 0
50 [P93] 1729 * 05 38 55.6332136920 -69 07 23.839980384 14.514 15.112 15.022   14.717 B0.7III 12 0
51 W61 7-24 * 05 38 55.841 -69 08 22.32 13.930 14.529 14.398   13.908 B1.5Ib((n))Nwk 12 0
52 VFTS 725 * 05 39 03.2214054552 -69 08 18.353598288   15.95 15.84     B0.7III 12 0
53 [P93] 1969 * 05 39 03.5968259712 -69 07 16.957645212 14.531 15.268 15.088   14.618 B0.2III 11 0
54 W61 7-29 s*b 05 39 04.7719738776 -69 04 09.915616344 12.403 13.154 12.756     B1Ia 18 0
55 W61 7-28 SB* 05 39 04.8729238776 -69 05 40.477886412 13.507 14.355 14.240   13.891 B0.5V 15 0
56 NGC 3070 GiG 09 58 06.914 +10 21 35.31   13.2       ~ 54 0

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