Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-08
Astronomy and Astrophysics
Astrophysics
Accepted for publication in the Astronomical Journal (Feb. 2004); 21 pages, 7 figures
Scientific paper
10.1086/381067
We present follow-up spectra of 39 emission-line galaxies (ELGs) from the KPNO International Spectroscopic Survey (KISS). Many targets were selected as potentially low metallicity systems based on their absolute B magnitudes and the metallicity-luminosity relation. The spectra, obtained with the Lick 3-m telescope, cover the full optical region from [O II]3726,29 to beyond [S IIl6717,31 and include measurement of [O IIIl4363 in twelve objects. The spectra are presented and tables of the strong line ratios are given. For twelve high signal-to-noise ratio spectra, we determine abundance ratios of oxygen, nitrogen, neon, sulfur and argon. We find these galaxies to be metal deficient with three systems approaching O/H of 1/25th solar. We compare the abundance results from the temperature-based T_e method to the results from the strong-line p_3 method of Pilyguin (2000).
Gronwall Caryl
Melbourne Jason
Phillips Andre
Salzer John Joseph
Sarajedini Vicki
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