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For refcode 1993AJ....105..427R:
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Copyright by American Astronomical Society. Reproduced by permission
1993AJ....105..427R IRAS OBSERVATIONS OF H {alpha} SELECTED EMISSION-LINE GALAXIES M. REGO Departamento de Astrofisica, Universidad Complutense, 28040 Madrid, Spain M. CORDERO-GRACIA ETSI Aeronauticos, Universidad Politecnica, 28040 Madrid, Spain J. ZAMORANO AND J. GALLEGO Departamento de Astrofisica, Universidad Complutense, 28040 Madrid, Spain Received 1 May 1992; revised 27 July 1992 ABSTRACT We present the results of IRAS observations of the UCM (Universidad Complutense de Madrid) sample of emission-line galaxies, which have been selected from wide-dispersion H {alpha} objective-prism plates. These data are intended to provide a convenient summary of the relevant far- infrared (FIR) properties of these galaxies. Color-color diagrams, as interpreted by theoretical models, Suggest that emission from UCM galaxies is mainly due to dust heated directly by photons emitted in active star-forming regions. Statistical analysis of some samples, including the IRAS minisurvey and blue-selected objective-prism samples, have been performed. Comparisons, based on FIR luminosity distributions, with the IRAS minisurvey make evident the lower metallicity of the UCM galaxies which cannot be considered as a parent population of IRAS detected galaxies. The FIR luminosity distributions of different samples have been compared using nonparametric methods and the best correlation has been found for the UCM and Wasilewski samples. Finally, a more detailed analysis of a UCM subsample has been performed from a three component model in order to get information concerning the fractional contribution of disk, star formation activity, and nonthermal mechanisms operating in the UCM galaxies.
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