The VLT-FLAMES Tarantula Survey: Multiplicity and Dynamics of the Massive Stars in 30 Dor

被引：0
|
作者：
Sana, H. [1 ]
Dunstall, P. R. [2 ]
Henault-Brunet, V. [3 ]
Walborn, N. R. [4 ]
de Koter, A. [1 ,5 ]
de Mink, S. E. [4 ]
Dufton, P. L.
Evans, C. J. [6 ]
Maiz Apellaniz, J. [7 ]
Taylor, W. D. [3 ]
Vink, J. S. [8 ]
机构：
[1] Univ Amsterdam, Astron Inst Anton Pannekoek, Postbus 94249, NL-1090 GE Amsterdam, Netherlands
[2] Queens Univ Belfast, Dept Phys & Astron, Belfast BT7 1NN, Antrim, North Ireland
[3] Univ Edinburgh, Inst Astron, Scottish Univ Phys Alliance, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland
[4] Space Telescope Sci Inst, Baltimore, MD 21218 USA
[5] Univ Utrecht, Astron Inst, NL-3584 CC Utrecht, Netherlands
[6] Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland
[7] CSIC, Inst Astroffs Andalucia, E-18008 Granada, Spain
[8] Armagh Observ, Armagh BT61 9DG, North Ireland
来源：
FOUR DECADES OF RESEARCH ON MASSIVE STARS | 2012年 / 465卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the first results on the multiplicity and dynamics of the OB star population in 30 Dor obtained in the framework of the VLT-FLAMES Tarantula Survey. Based on their radial velocity (RV) variations, we have identified over 100 O-type and about 160 B-type spectroscopic binaries. The observed spectroscopic binary fraction for the O and B stars in our sample is of the order 30-35%. Preliminary considerations on the binary detection rate suggest a true spectroscopic binary fraction of the order of 50%. The overall RV dispersion (sigma(RV)) of the O stars in the complete sample is about 10 km s(-1) but we note that the NGC 2060 and NGC 2070 regions show slightly different dynamical properties. We identified 17 O-type runaway candidates that show deviating RVs. One third of these candidates are On/nn/nnn stars, indicating a large rotational velocity. We show that the fast rotators have different RV properties than the average of the sample and are distributed throughout the field. This suggests a link between large rotation rate and peculiar RVs and, ultimately, the runaway phenomenon. Using the O stars observed within 25 ''(sigma 6 pc) from the core of R136, we obtain a preliminary upper limit of 7.5 kin s(-1) sigma(dyn). Given that this value has yet to be corrected down for contributions of non-detected long period binaries, this indicates that R136 is possibly a dynamically stable cluster.
引用
收藏
页码：284 / +
页数：3
相关论文
共 50 条
  • [1] The O stars in the VLT-FLAMES Tarantula Survey
    de Koter, A.
    Sana, H.
    Evans, C. J.
    Bagnoli, T.
    Bastian, N.
    Bestenlehner, J. M.
    Bonanos, A.
    Bressert, E.
    Brott, I.
    Cantiello, M.
    Carraro, G.
    Clark, S.
    Crowther, P.
    de Mink, S. E.
    Doran, E.
    Dufton, P.
    Dunstall, P.
    Garcia, M.
    Graefener, G.
    Henault-Brunet, V.
    Herrero, A.
    Howarth, I.
    Izzard, R.
    Koehler, K.
    Langer, N.
    Lennon, D.
    Apellaniz, J. Maiz
    Markova, N.
    Najarro, P.
    Puls, J.
    Ramirez, O.
    Sabin-Sanjulian, C.
    Simon-Diaz, S.
    Smartt, S.
    Stroud, V.
    van Loon, J. Th
    Taylor, W.
    Vink, J. S.
    GREAT-ESF WORKSHOP: STELLAR ATMOSPHERES IN THE GAIA ERA, 2011, 328
  • [2] The VLT-FLAMES Survey of Massive Stars
    Lennon, Daniel J.
    Evans, Chris
    Hunter, Ian
    Trundle, Carrie
    Smartt, Stephen
    Dufton, Philip
    Ryans, Robert
    Langer, Norbert
    Brott, Ines
    de Koter, Alex
    Mokiem, Rohied
    Puls, Joachim
    Herrero, Artemio
    Howarth, Ian
    HOT AND COOL: BRIDGING GAPS IN MASSIVE-STAR EVOLUTION, 2010, 425 : 29 - +
  • [3] The VLT-FLAMES Tarantula survey
    Lennon, Daniel J.
    Evans, Christopher J.
    Bastian, Nate
    Beletsky, Yuri
    Brott, Ines
    Cantiello, Matteo
    Carraro, Giovanni
    Clark, J. Simon
    Crowther, Paul A.
    de Koter, Alex
    de Mink, Selma E.
    Dufton, Philip L.
    Dunstall, Paul
    Gieles, Mark
    Graefener, Goetz
    Henault-Brunet, Vincent
    Herrero, Artemio
    Howarth, Ian D.
    Langer, Norbert
    Maiz Apellaniz, Jesus
    Markova, Nevena
    Paco Najarro, F.
    Puls, Joachim
    Sana, Hugues
    Simon-Diaz, Sergio
    Smartt, Stephen J.
    Stroud, Vanessa E.
    Taylor, William D.
    van Loon, Jacco T.
    Vink, Jorick S.
    Walborn, Nolan R.
    ACTIVE OB STARS: STRUCTURE, EVOLUTION, MASS-LOSS, AND CRITICAL LIMITS, 2011, (272): : 296 - 297
  • [4] The VLT-FLAMES Tarantula Survey
    Evans, C. J.
    Bastian, N.
    Beletsky, Y.
    Brott, I.
    Cantiello, M.
    Clark, J. S.
    Crowther, P. A.
    de Koter, A.
    de Mink, S. E.
    Dufton, P. L.
    Dunstall, P.
    Gieles, M.
    Graefener, G.
    Henault-Brunet, V.
    Herrero, A.
    Howarth, I. D.
    Langer, N.
    Lennon, D. J.
    Apellaniz, J. Maiz
    Markova, N.
    Najarro, F.
    Puls, J.
    Sana, H.
    Simon-Diaz, S.
    Smartt, S. J.
    Stroud, V. E.
    Taylor, W. D.
    Trundle, C.
    van Loon, J. Th.
    Vink, J. S.
    Walborn, N. R.
    STAR CLUSTERS: BASIC GALACTIC BUILDING BLOCKS THROUGHOUT TIME AND SPACE, 2010, (266): : 35 - 40
  • [5] The VLT-FLAMES Tarantula Survey
    Schneider F.R.N.
    Ramírez-Agudelo O.H.
    Tramper F.
    Bestenlehner J.M.
    Castro N.
    Sana H.
    Evans C.J.
    Sabín-Sanjulián C.
    Simón-Díaz S.
    Langer N.
    Fossati L.
    Gräfener G.
    Crowther P.A.
    De Mink S.E.
    De Koter A.
    Gieles M.
    Herrero A.
    Izzard R.G.
    Kalari V.
    Klessen R.S.
    Lennon D.J.
    Mahy L.
    Maíz Apellániz J.
    Markova N.
    Van Loon J.T.
    Vink J.S.
    Walborn N.R.
    Schneider, F.R.N. (fabian.schneider@physics.ox.ac.uk), 2018, EDP Sciences (618):
  • [6] The VLT-FLAMES Tarantula Survey
    Britavskiy, N.
    Lennon, D. J.
    Patrick, L. R.
    Evans, C. J.
    Herrero, A.
    Langer, N.
    van Loon, J. Th.
    Clark, J. S.
    Schneider, F. R. N.
    Almeida, L. A.
    Sana, H.
    de Koter, A.
    Taylor, W. D.
    ASTRONOMY & ASTROPHYSICS, 2019, 624
  • [7] The VLT-FLAMES Tarantula Survey
    Vink, Jorick S.
    Evans, C. J.
    Bestenlehner, J.
    McEvoy, C.
    Ramirez-Agudelo, O.
    Sana, H.
    Schneider, F.
    LIVES AND DEATH-THROES OF MASSIVE STARS, 2017, 12 (S329): : 279 - 286
  • [8] The VLT-FLAMES Tarantula Survey
    Markova, N.
    Evans, C. J.
    Bastian, N.
    Beletsky, Y.
    Bestenlehner, J.
    Brott, I.
    Cantiello, M.
    Carraro, G.
    Clark, J. S.
    Crowther, P. A.
    de Koter, A.
    de Mink, S. E.
    Doran, E.
    Dufton, P. L.
    Dunstall, P.
    Gieles, M.
    Graefener, G.
    Henault-Brunet, V.
    Herrero, A.
    Howarth, I. D.
    Langer, N.
    Lennon, D. J.
    Apellaniz, J. Maiz
    Najarro, F.
    Puls, J.
    Sana, H.
    Simon-Diaz, S.
    Smartt, S. J.
    Stroud, V. E.
    Taylor, W. D.
    van Loon, J. Th.
    Vink, J. S.
    Walborn, N. R.
    BULGARIAN ASTRONOMICAL JOURNAL, 2011, 15 : 29 - 34
  • [9] The VLT-FLAMES Tarantula Survey: Observational evidence for two distinct populations of massive runaway stars in 30 Doradus
    Sana, H.
    Ramírez-Agudelo, O.H.
    Hénault-Brunet, V.
    Mahy, L.
    Almeida, L.A.
    De Koter, A.
    Bestenlehner, J.M.
    Evans, C.J.
    Langer, N.
    Schneider, F.R.N.
    Crowther, P.A.
    De Mink, S.E.
    Herrero, A.
    Lennon, D.J.
    Gieles, M.
    Maíz Apellániz, J.
    Renzo, M.
    Sabbi, E.
    Van Loon, J. Th.
    Vink, J.S.
    Astronomy and Astrophysics, 2022, 668
  • [10] The VLT-FLAMES Tarantula Survey XXII. Multiplicity properties of the B-type stars
    Dunstall, P. R.
    Dufton, P. L.
    Sana, H.
    Evans, C. J.
    Howarth, I. D.
    Simon-Diaz, S.
    de Mink, S. E.
    Langer, N.
    Maiz Apellaniz, J.
    Taylor, W. D.
    ASTRONOMY & ASTROPHYSICS, 2015, 580
12345