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Iras observations of Hα selected emission-line galaxies Rego Fernández, Manuel Cordero Gracia, M. Zamorano Calvo, Jaime Gallego Maestro, Jesús 52 Infrared observations Starburst Seyfert Nuclei Sample Model Astrofísica Astronomía (Física) © American Astronomical Society. We wish to thank the staff at Rutherford Appleton Lab­oratory for their friendly assistance and hospitality during the visit of J.G. in November 1991. This work was sup­ported in part by the Spanish "Programa Sectorial de Pro­moción General del Conocimiento" under Grant No. PB89-124. 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_α 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. Programa Sectorial de Pro­moción General del Conocimiento (MEC), España Ministerio de Educación y Cultura (MEC), España Depto. de Física de la Tierra y Astrofísica Fac. de Ciencias Físicas TRUE pub 2023-06-20T20:12:09Z 2023-06-20T20:12:09Z 1993-02 journal article https://hdl.handle.net/20.500.14352/59820 0004-6256 10.1086/116441 eng PB89-124 open access application/pdf IOP Publishing ltd