Probing Chemical Evolution and Homogeneity of three Local Group galaxies

Details Probing Chemical Evolution and Homogeneity of three Local Group galaxies Probing Chemical Evolution and Homogeneity of three Local Group galaxies

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.8006k&link_type=abstract

American Astronomical Society Meeting 204, #80.06; Bulletin of the American Astronomical Society, Vol. 36, p.812

Astronomy and Astrophysics

Astronomy

Scientific paper

Planetary nebulae (PNe) and HII regions provide a probe of the rough enrichment and star formation history from intermediate ages to the present day. Also observations of HII regions and PNe permit us to measure abundances at different locations, testing the homogeneity with which elements are distributed within a galaxy. We will present the first results of NTT spectroscopy of HII regions and PNe in three dwarf galaxies in the nearby Antlia-Sextans poor group of galaxies: Sextans A, Sextans B and NGC 3109. For the most PNe and HII regions in these galaxies O,N,S,Ar and He abundances have been obtained with the classic Te-method after the detection of the [OIII] 4364 Å line.

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