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1 results

  • Haro15: Is it actually a low metallicity galaxy?

  • Verónica Firpo, Guillermo Bosch, Guillermo Hägele, Ángeles I. Díaz, Nidia Morrell
  • Journal:
    Proceedings of the International Astronomical Union / Volume 5 / Issue S265 / August 2009
    Published online by Cambridge University Press:
    09 March 2010, pp. 243-244
    Print publication:
    August 2009
    • Article
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  • We present a detailed study of the physical properties of the nebular material in multiple knots of the blue compact dwarf galaxy Haro 15. Using long slit and echelle spectroscopy, obtained at Las Campanas Observatory, we study the physical conditions (electron density and temperature), ionic and total chemical abundances of several atoms, reddening and ionization structure. The latter was derived by comparing the oxygen and sulphur ionic ratios to their corresponding observed emission line ratios (the η and η' plots) in different regions of the galaxy. Applying direct and empirical methods for abundance determination, we perform a comparative analysis between these regions.