Meurer, GerhardtWong, O. I.Kim, J. H.Hanish, D JHeckman, T MWerk, JBland-Hawthorn, JossDopita, MichaelZwaan, M AKoribalski, Baerbel SSeibert, MThilker, D. A.2015-12-070004-637Xhttp://hdl.handle.net/1885/24873Many of the results in modern astrophysics rest on the notion that the initial mass function (IMF) is universal. Our observations of a sample of H i selected galaxies in the light of Hα and the far-ultraviolet (FUV) challenge this result. The extinction-Keywords: Galaxies: ISM; Galaxies: stellar content; Stars: formation; Stars: luminosity function, mass function200910.1088/0004-637X/695/1/7652016-02-24