2011A&A...530L..10T


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.24CET01:52:31

2011A&A...530L..10T - Astronomy and Astrophysics, volume 530, L10-10 (2011/6-1)

The VLT-FLAMES Tarantula survey. II. R139 revealed as a massive binary system.

TAYLOR W.D., EVANS C.J., SANA H., WALBORN N.R., DE MINK S.E., STROUD V.E., ALVAREZ-CANDAL A., BARBA R.H., BESTENLEHNER J.M., BONANOS A.Z., BROTT I., CROWTHER P.A., DE KOTER A., FRIEDRICH K., GRAFENER G., HENAULT-BRUNET V., HERRERO A., KAPER L., LANGER N., LENNON D.J., MAIZ-APELLANIZ J., MARKOVA N., MORRELL N., MONACO L. and VINK J.S.

Abstract (from CDS):

We report the discovery that R139 in 30 Doradus is a massive spectroscopic binary system. Multi-epoch optical spectroscopy of R139 was obtained as part of the VLT-FLAMES Tarantula Survey, revealing a double-lined system. The two components are of similar spectral types; the primary exhibits strong C λ4650 emission and is classified as an O6.5Iafc supergiant, while the secondary is an O6Iaf supergiant. The radial-velocity variations indicate a highly eccentric orbit with a period of 153.9 days. Photometry obtained with the Faulkes Telescope South shows no evidence for significant variability within an 18 month period. The orbital solution yields lower mass limits for the components of M1sin3i=78±8M and M2sin3i=66±7M. As R139 appears to be the most massive binary system known to contain two evolved of supergiants, it will provide an excellent test for atmospheric and evolutionary models.

Abstract Copyright:

Journal keyword(s): binaries: spectroscopic - stars: early-type - stars: individual: R139 - open clusters and associations: individual: 30 Doradus

CDS comments: Paragraph 3.3 check star Mk 11 not identified.

Simbad objects: 15

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Number of rows : 15

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5826 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15122 1
3 NAME 30 Dor Region reg 05 38.0 -69 06           ~ 182 0
4 RMC 133 SB* 05 38 23.7091310171 -69 05 03.565883616   12.43 12.49     O7/8II 28 0
5 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1056 2
6 RMC 138 sg* 05 38 36.1319623810 -69 05 57.970666081   12.07 11.74   11.45 A0Ia 28 0
7 RMC 137 s*b 05 38 36.9620682844 -69 05 07.877452894   12.12 12.02   12.05 B1Ia 28 0
8 RMC 139 WR* 05 38 42.3548071421 -69 04 58.201053806   12.04 11.94     O6.5Iafc+O6Iaf 86 0
9 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1766 1
10 HD 269926 WR* 05 38 47.5177886261 -69 00 25.287665455 11.953 12.974 13.116 13.16 12.926 WN4+OB 62 0
11 V* V712 Car bL* 10 23 58.0120989646 -57 45 48.938103165 15.466 15.473 13.5 12.6   O3If*/WN6+O3If*/WN6 149 1
12 Cl* NGC 3603 BLW A1 WR* 11 15 07.31 -61 15 38.4   12.32 11.18     WN6h 60 0
13 NGC 3603 OpC 11 15 18.6 -61 15 26           ~ 968 1
14 [CPR2002] B17 s*b 20 30 27.3017352150 +41 13 25.127848580     13.053     O6Iaf+O9Ia 27 0
15 BD+40 4220 EB* 20 32 22.4241357648 +41 18 18.942382590 11.32 10.79 9.185     O6.5-7f+O5.5-6f 373 0

    Equat.    Gal    SGal    Ecl

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2021.01.24-01:52:31

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