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Haro15: Is it actually a low metallicity galaxy?

Published online by Cambridge University Press:  09 March 2010

Verónica Firpo ,
Guillermo Bosch ,
Guillermo Hägele ,
Ángeles I. Díaz  and
Nidia Morrell
Verónica Firpo
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque s/n, B1900FWA, La Plata, Argentina. email: vfirpo@fcaglp.unlp.edu.ar
Guillermo Bosch
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque s/n, B1900FWA, La Plata, Argentina. email: vfirpo@fcaglp.unlp.edu.ar
Guillermo Hägele
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque s/n, B1900FWA, La Plata, Argentina. email: vfirpo@fcaglp.unlp.edu.ar Departamento de Física Teórica, C-XI, Universidad Autónoma de Madrid, Spain.
Ángeles I. Díaz
Affiliation:
Departamento de Física Teórica, C-XI, Universidad Autónoma de Madrid, Spain.
Nidia Morrell
Affiliation:
Las Campanas Observatory, Carnegie Observatories, La Serena, Chile.
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Abstract

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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.

Keywords

(ISM:) H ii RegionsstarburstHaro 15abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 243 - 244
Copyright
Copyright © International Astronomical Union 2010

References

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