Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541203h&link_type=abstract
American Astronomical Society, AAS Meeting #215, #412.03; Bulletin of the American Astronomical Society, Vol. 42, p.246
Astronomy and Astrophysics
Astronomy
Scientific paper
We have derived metal abundances for over 1300 star-forming emission-line galaxies from the KISS objective-prism survey. We employed a range of methods and calibrations to derive the most accurate abundance possible for each source, depending on the spectral data available. This includes direct (Te) abundances for objects with high S/N spectra, an R23 calibration using the models of McGaugh for sources with measured [OII] lines, and our own coarse abundance scheme that makes use of the strong line ratios [OIII]/Hβ and [NII]/Hα. We present details of our various methods. In addition, we illustrate the uses of having uniformly derived metal abundances for such a large, statistically complete sample of galaxies. In particular, we present a new version of the luminosity-metellicty relation in the local universe which nearly doubles the sample size used previously.
Huff Michael
Salzer John Joseph
Williams Adam
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