The O stars in the VLT-FLAMES Tarantula Survey

Bibcode
2011JPhCS.328a2022D
DOI
10.1088/1742-6596/328/1/012022
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.; Gräfener, G.; Hénault-Brunet, V.; Herrero, A.; Howarth, I.; Izzard, R.; Köhler, K.; Langer, N.; Lennon, D.; Maíz Apellániz, J.; Markova, N.; Najarro, P.; Puls, J.; Ramirez, O.; Sabín-Sanjulián, C.; Simón-Díaz, S.; Smartt, S.; Stroud, V.; van Loon, J. Th; Taylor, W.; Vink, J. S.
Bibliographical reference

Journal of Physics: Conference Series, Volume 328, Issue 1, pp. 012022 (2011).

Advertised on:
12
2011
Number of authors
38
IAC number of authors
0
Citations
4
Refereed citations
1
Description
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.
Type
Non-refereed

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