Far-Infrared Properties of Nearby Emission-Line Galaxies from the KPNO International Spectroscopic Survey

Details Far-Infrared Properties of Nearby Emission-Line Galaxies from the KPNO International Spectroscopic Survey Far-Infrared Properties of Nearby Emission-Line Galaxies from the KPNO International Spectroscopic Survey

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.7607g&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #76.07; Bulletin of the American Astronomical Society, Vol. 32, p.1525

Astronomy and Astrophysics

Astronomy

Scientific paper

We have studied the far-IR properties of nearby emission-line galaxies (ELGs) from the KPNO International Spectroscopic Survey (KISS). KISS is a modern objective-prism survey which combines the wide field survey capability of a Schmidt telescope combined with the deep sensitivity of a CCD detector. KISS galaxies are selected via their strong Hα emission and are primarily active star-forming galaxies. We have used the survey to measure the local star formation rate density which is a crucial element in our understanding of galaxy evolution and formation. Unfortunately, one of the largest uncertainties encountered in translating Hα emission-line flux (or UV emission) to star formation rate is the internal extinction due to dust. We have studied the effect of dust in emission-line galaxies by comparing the information from optical spectroscopy (the Balmer decrement) to their far-infrared fluxes using data gathered by the Infrared Astronomical Satellite (IRAS). We have also used the far-IR fluxes to derive a complementary measure of the star-formation rates of the KISS galaxies.

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