The O stars in the VLT-FLAMES Tarantula Survey

Autoria(s): 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.; Apellániz, J. Maíz; 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.
Data(s)

2011
Resumo

<p>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.</p>
Identificador

http://pure.qub.ac.uk/portal/en/publications/the-o-stars-in-the-vltflames-tarantula-survey(05d9d5b1-9c70-452d-a413-c073a6e1529d).html

http://dx.doi.org/10.1088/1742-6596/328/1/012022

http://www.scopus.com/inward/record.url?scp=84856686325&partnerID=8YFLogxK
Idioma(s)

eng
Direitos

info:eu-repo/semantics/restrictedAccess
Fonte

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 , Apellániz , J M , Markova , N , Najarro , P , Puls , J , Ramirez , O , Sabín-Sanjulián , C , Simón-Díaz , S , Smartt , S , Stroud , V , Van Loon , J T , Taylor , W & Vink , J S 2011 , ' The O stars in the VLT-FLAMES Tarantula Survey ' Journal of Physics: Conference Series , vol 328 , no. 1 , 012022 . DOI: 10.1088/1742-6596/328/1/012022
Palavras-Chave #/dk/atira/pure/subjectarea/asjc/3100 #Physics and Astronomy(all)
Tipo

article
Acesso ao item digital