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The extreme properties of the "Green Pea" galaxies. New hints from GTC observations

R. O. Amorín, J. M. Vílchez, E. Pérez-Montero, P. Papaderos

We review recent findings of a detailed spectrophotometric study based on OSIRIS-GTC observations of "Green Pea" (GP) galaxies. These compact, emission-line galaxies at redshift z~0.15-0.35 are metal-poor, low-mass objects with high star formation rates. We show how high quality GTC data allow us to: (a) derive physical properties and chemical abundances of the ionized gas with high accuracy and, (b) to place constraints on the star formation history using the combined approach of evolutionary and population spectral synthesis models. These results provide additional clues on the nature and evolutionary state of the GPs and highlight their importance as laboratories for studying galaxy evolution at late cosmic epochs.

galaxies: abundances - galaxies: dwarf - galaxies: evolution - galaxies: starburst

Fourth Science Meeting with the GTC
C. Muñoz-Tuñón, J. M. Rodríguez-Espinosa

Revista Mexicana de Astronomía y Astrofísica
Volume 42, Page 49
2013 May

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia