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Full spectroscopic orbital solutions for more than 100 massive binaries in the high-mass starburst region 30 Doradus

Grant number: 13/18245-0
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): February 01, 2014
Effective date (End): January 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Astronomy
Principal Investigator:Augusto Damineli Neto
Grantee:Leonardo Andrade de Almeida
Supervisor abroad: Hugues Sana
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo, SP, Brazil
Local de pesquisa : Space Telescope Science Institute (STScI), United States  
Associated to the scholarship:12/09716-6 - Accurate distances to young clusters through massive eclipsing binaries, BP.PD

Abstract

A key ingredient missing from current formation and evolution theories of massive stars, and of cluster evolution, is a robust binary fraction and the intrinsic distributions of orbital parameters. The VLT-FLAMES Tarantula Survey (VFTS), which targeted 800 O- and B- stars in 30 Dor, was designed to detect most massive binaries with periods <200 d: the observed O-type binary fraction is 35% (126 binaries). Using a radial velocity monitoring, we will now characterise the orbits of these systems, with the aim of obtaining the first measurements of the period, mass-ratio and eccentricity distributions of massive binaries in a dense and dynamically complex environment, in which conditions are closer to those in super-star-clusters observed beyond the Local Group. We will also constrain the orbital properties of the 18 identified B-supergiant binaries, including an interacting and a post-interaction system. These systems represent key benchmark cases for models of close binary evolution. (AU)

Articles published in Agência FAPESP about the scholarship:
Astronomers find evidence of a planet with a mass almost 13 times that of Jupiter 

Scientific publications (11)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALMEIDA, L. A.; DE ALMEIDA, L.; DAMINELI, A.; RODRIGUES, V, C.; CASTRO, M.; LOPES, C. E. FERREIRA; JABLONSKI, F.; DO NASCIMENTO JR, J-D; PEREIRA, M. G. Orbital Period Variation of KIC 10544976: Applegate Mechanism versus Light Travel Time Effect. ASTRONOMICAL JOURNAL, v. 157, n. 4 APR 2019. Web of Science Citations: 0.
DAMINELI, A.; FERNANDEZ-LAJUS, E.; ALMEIDA, L. A.; CORCORAN, M. F.; DAMINELI, D. S. C.; GULL, T. R.; HAMAGUCHI, K.; HILLIER, D. J.; JABLONSKI, F. J.; MADURA, T. I.; MOFFAT, A. F. J.; NAVARETE, F.; RICHARDSON, N. D.; RUIZ, G. F.; SALERNO, N. E.; SCALIA, M. C.; WEIGELT, G. Distinguishing circumstellar from stellar photometric variability in Eta Carinae. Monthly Notices of the Royal Astronomical Society, v. 484, n. 1, p. 1325-1346, MAR 2019. Web of Science Citations: 0.
ALMEIDA, L. A.; DAMINELI, A.; RODRIGUES, C. V.; PEREIRA, M. G.; JABLONSKI, F. HS 2231+2441: an HW Vir system composed of a low-mass white dwarf and a brown dwarf. Monthly Notices of the Royal Astronomical Society, v. 472, n. 3, p. 3093-3100, DEC 2017. Web of Science Citations: 0.
MOYANO, M.; ALMEIDA, L. A.; VON ESSEN, C.; JABLONSKI, F.; PEREIRA, M. G. Multi-band characterization of the hot Jupiters: WASP-5b, WASP-44b and WASP-46b. Monthly Notices of the Royal Astronomical Society, v. 471, n. 1, p. 650-657, OCT 2017. Web of Science Citations: 0.
OLIVEIRA, A. S.; RODRIGUES, C. V.; CIESLINSKI, D.; JABLONSKI, F. J.; SILVA, K. M. G.; ALMEIDA, L. A.; RODRIGUEZ-ARDILA, A.; PALHARES, M. S. Exploratory Spectroscopy of Magnetic Cataclysmic Variables Candidates and Other Variable Objects. ASTRONOMICAL JOURNAL, v. 153, n. 4 APR 2017. Web of Science Citations: 2.
ALMEIDA, L. A.; SANA, H.; TAYLOR, W.; BARBA, R.; BONANOS, A. Z.; CROWTHER, P.; DAMINELI, A.; DE KOTER, A.; DE MINK, S. E.; EVANS, C. J.; GIELES, M.; GRIN, N. J.; HENAULT-BRUNET, V.; LANGER, N.; LENNON, D.; LOCKWOOD, S.; MAIZ APELLANIZ, J.; MOFFAT, A. F. J.; NEIJSSEL, C.; NORMAN, C.; RAMIREZ-AGUDELO, O. H.; RICHARDSON, N. D.; SCHOOTEMEIJER, A.; SHENAR, T.; SOSZYNSKI, I.; TRAMPER, F.; VINK, J. S. The Tarantula Massive Binary Monitoring I. Observational campaign and OB-type spectroscopic binaries. Astronomy & Astrophysics, v. 598, FEB 2017. Web of Science Citations: 19.
SHENAR, T.; RICHARDSON, N. D.; SABLOWSKI, D. P.; HAINICH, R.; SANA, H.; MOFFAT, A. F. J.; TODT, H.; HAMANN, W. -R.; OSKINOVA, L. M.; SANDER, A.; TRAMPER, F.; LANGER, N.; BONANOS, A. Z.; DE MINK, S. E.; GRAFENER, G.; CROWTHER, P. A.; VINK, J. S.; ALMEIDA, L. A.; DE KOTER, A.; BARBA, R.; HERRERO, A.; ULACZYK, K. The Tarantula Massive Binary Monitoring II. First SB2 orbital and spectroscopic analysis for the Wolf-Rayet binary R145. Astronomy & Astrophysics, v. 598, FEB 2017. Web of Science Citations: 11.
DAMINELI, A.; ALMEIDA, L. A.; BLUM, R. D.; DAMINELI, D. S. C.; NAVARETE, F.; RUBINHO, M. S.; TEODORO, M. Extinction law in the range 0.4-4.8 mu m and the 8620 angstrom DIB towards the stellar cluster Westerlund 1. Monthly Notices of the Royal Astronomical Society, v. 463, n. 3, p. 2653-2666, DEC 2016. Web of Science Citations: 8.
ALMEIDA, L. A.; SANA, H.; DE MINK, S. E.; TRAMPER, F.; SOSZYNSKI, I.; LANGER, N.; BARBA, R. H.; CANTIELLO, M.; DAMINELI, A.; DE KOTER, A.; GARCIA, M.; GRAEFENER, G.; HERRERO, A.; HOWARTH, I.; MAIZ APELLANZ, J.; NORMAN, C.; RAMIREZ-AGUDELO, O. H.; VINK, J. S. DISCOVERY OF THE MASSIVE OVERCONTACT BINARY VFTS 352: EVIDENCE FOR ENHANCED INTERNAL MIXING. ASTROPHYSICAL JOURNAL, v. 812, n. 2 OCT 20 2015. Web of Science Citations: 13.
HOWARTH, I. D.; DUFTON, P. L.; DUNSTALL, P. R.; EVANS, C. J.; ALMEIDA, L. A.; BONANOS, A. Z.; CLARK, J. S.; LANGER, N.; SANA, H.; SIMON-DIAZ, S.; SOSZYNSKI, I.; TAYLOR, W. D. The VLT-FLAMES Tarantula Survey XXIII. Two massive double-lined binaries in 30 Doradus. Astronomy & Astrophysics, v. 582, OCT 2015. Web of Science Citations: 2.
SILVA, K. M. G.; RODRIGUES, C. V.; OLIVEIRA, A. S.; ALMEIDA, L. A.; CIESLINSKI, D.; COSTA, J. E. R.; JABLONSKI, F. J. MLS110213:022733+130617: a new eclipsing polar above the period gap. Monthly Notices of the Royal Astronomical Society, v. 451, n. 4, p. 4183-4192, AUG 21 2015. Web of Science Citations: 2.

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