Calibrating [O 2]/Hα as a Star Formation Indicator

Details Calibrating [O 2]/Hα as a Star Formation Indicator Calibrating [O 2]/Hα as a Star Formation Indicator

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.4301m&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #43.01; Bulletin of the American Astronomical Society, Vol. 34, p.709

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Based on truly integrated spectrophotometry of a sample of ~ 300 galaxies we derive a new calibration of the [O 2]/Hα spectral ratio as a star formation indicator . Our study extends the analysis of Kennicutt (1992) and Jansen et. al. (2000) on the [O 2]/Hα ratio in morphologically normal galaxies to include a majority fraction of starburst and infrared luminous galaxies. Our results have direct application for deriving star formation rates from observations of [O 2] in high-redshift galaxies. Our broad spectral coverage (λ3600 -7000 Å) and insensitivity to aperture effects enable us to study the spatially integrated effects of excitation, metallicity, and extinction on [O 2]/Hα as a star-formation indicator. This research was funded by grants NSF AST-9900789 and NASA NAG5-8426.

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