Blue compact dwarf galaxies with nitrogen overabundance: a view from integral field spectroscopy

Bibcode
2011hsa6.conf..395P
Pérez-Montero, E.; Vílchez, J. M.; Cedrés, B.; Hägele, G. F.; Mollá, M.; García-Benito, R.; Díaz, A. I.; Kehrig, C.; Martín-Gordón, D.
Referencia bibliográfica

Highlights of Spanish Astrophysics VI, Proceedings of the IX Scientific Meeting of the Spanish Astronomical Society (SEA), held in Madrid, September 13 - 17, 2010, Eds.: M. R. Zapatero Osorio, J. Gorgas, J. Maíz Apellániz, J. R. Pardo, and A. Gil de Paz., p. 395-395

Fecha de publicación:
11
2011
Número de autores
9
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
Blue compact dwarf galaxies (BCDs) take up the low end of the distribution of metallicity and nitrogen-to-oxygen (N/O) ratio as derived using collisional emission lines in ionized gaseous nebulae. This chemical status is well explained by chemical evolution models. Nevertheless, there is a subsample of BCDs with large values of N/O which cannot be explained by these models. In this contribution we present Potsdam Multi Aperture Spectrograph (PMAS) integral field spectroscopy (IFS) of a sample of three of these objects. The statistical analysis of the abundances reveals their homogeneity at kpc scales. This preserves WR stars to be the cause of the ISM pollution.
Tipo
Sin árbitro

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