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The O stars in the VLT-FLAMES Tarantula Survey

De Koter, A, Sana, H, Evans, CJ, Bagnoli, T, Bastian, N, Bestenlehner, JM, Bonanos, A, Bressert, E, Brott, I, Cantiello, M , Carraro, G, Clark, S, Crowther, P, De Mink, SE, Doran, E, Dufton, P, Dunstall, P, Garcia, M, Gräfener, G, Hénault-Brunet, V, Herrero, A, Howarth, I, Izzard, R, Köhler, K, Langer, N, Lennon, D, Apellániz, JM, Markova, N, Najarro, P, Puls, J, Ramirez, O, Sabín-Sanjulián, C, Simón-Díaz, S, Smartt, S, Stroud, V, Van Loon, JT, Taylor, W and Vink, JS (2011) The O stars in the VLT-FLAMES Tarantula Survey Journal of Physics: Conference Series, 328 (1).

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Abstract

The VLT-FLAMES Tarantula Survey (VFTS) has secured mid-resolution spectra of over 300 O-type stars in the 30 Doradus region of the Large Magellanic Cloud. A homogeneous analysis of such a large sample requires automated techniques, an approach that will also be needed for the upcoming analysis of the Gaia surveys of the Northern and Southern Hemisphere supplementing the Gaia measurements. We point out the importance of Gaia for the study of O stars, summarize the O star science case of VFTS and present a test of the automated modeling technique using synthetically generated data. This method employs a genetic algorithm based optimization technique in combination with fastwind model atmospheres. The method is found to be robust and able to recover the main photospheric parameters accurately. Precise wind parameters can be obtained as well, however, as expected, for dwarf stars the rate of acceleration of the ow is poorly constrained.

Item Type: Article
Authors :
NameEmailORCID
De Koter, AUNSPECIFIEDUNSPECIFIED
Sana, HUNSPECIFIEDUNSPECIFIED
Evans, CJUNSPECIFIEDUNSPECIFIED
Bagnoli, TUNSPECIFIEDUNSPECIFIED
Bastian, NUNSPECIFIEDUNSPECIFIED
Bestenlehner, JMUNSPECIFIEDUNSPECIFIED
Bonanos, AUNSPECIFIEDUNSPECIFIED
Bressert, EUNSPECIFIEDUNSPECIFIED
Brott, IUNSPECIFIEDUNSPECIFIED
Cantiello, MUNSPECIFIEDUNSPECIFIED
Carraro, GUNSPECIFIEDUNSPECIFIED
Clark, SUNSPECIFIEDUNSPECIFIED
Crowther, PUNSPECIFIEDUNSPECIFIED
De Mink, SEUNSPECIFIEDUNSPECIFIED
Doran, EUNSPECIFIEDUNSPECIFIED
Dufton, PUNSPECIFIEDUNSPECIFIED
Dunstall, PUNSPECIFIEDUNSPECIFIED
Garcia, MUNSPECIFIEDUNSPECIFIED
Gräfener, GUNSPECIFIEDUNSPECIFIED
Hénault-Brunet, VUNSPECIFIEDUNSPECIFIED
Herrero, AUNSPECIFIEDUNSPECIFIED
Howarth, IUNSPECIFIEDUNSPECIFIED
Izzard, RUNSPECIFIEDUNSPECIFIED
Köhler, KUNSPECIFIEDUNSPECIFIED
Langer, NUNSPECIFIEDUNSPECIFIED
Lennon, DUNSPECIFIEDUNSPECIFIED
Apellániz, JMUNSPECIFIEDUNSPECIFIED
Markova, NUNSPECIFIEDUNSPECIFIED
Najarro, PUNSPECIFIEDUNSPECIFIED
Puls, JUNSPECIFIEDUNSPECIFIED
Ramirez, OUNSPECIFIEDUNSPECIFIED
Sabín-Sanjulián, CUNSPECIFIEDUNSPECIFIED
Simón-Díaz, SUNSPECIFIEDUNSPECIFIED
Smartt, SUNSPECIFIEDUNSPECIFIED
Stroud, VUNSPECIFIEDUNSPECIFIED
Van Loon, JTUNSPECIFIEDUNSPECIFIED
Taylor, WUNSPECIFIEDUNSPECIFIED
Vink, JSUNSPECIFIEDUNSPECIFIED
Date : 1 December 2011
Identification Number : 10.1088/1742-6596/328/1/012022
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:54
Last Modified : 17 May 2017 12:54
URI: http://epubs.surrey.ac.uk/id/eprint/837176

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