GTC and OSIRIS: expanding the metallicity horizon of massive stars knowledge

Bibcode
2013RMxAC..42...32G
García, M.; Herrero, A.
Referencia bibliográfica

Fourth Science Meeting with the GTC (Eds. C. Muñoz-Tuñón & J. M. Rodríguez-Espinosa) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 42, pp. 32-33 (2013) (http://www.astroscu.unam.mx/~rmaa/)

Fecha de publicación:
5
2013
Número de autores
2
Número de autores del IAC
2
Número de citas
0
Número de citas referidas
0
Descripción
Massive stars are fundamental drivers of the Universe because of their injection of energy, momentum, and nuclear-processed material in every stage of their life and death. Their feedback depends on their formation, winds and evolution, and these in turn depend on chemical composition. The GTC-OSIRIS combination is an excellent machine for quantitative studies of blue massive stars in Local Group galaxies, where different metallicity environments can be probed. We present our analyses of OSIRIS spectra of blue massive stars in IC 1613, where metallicity ranges from ~0.05 to 0.1 Z_⊙ according to HII regions. GTC-OSIRIS unveils unknown O-type stars in IC 1613, whose quantitative analysis will provide new insight for our models of massive star winds and evolution and will serve as proxy for studies of the early Universe.
Tipo
Sin árbitro
Galaxias
Espectroscopia

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