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    • Galaxy And Mass Assembly (GAMA): Defining passive galaxy samples and searching for the UV upturn 

      S Phillipps; S S Ali; M N Bremer; R De Propris; A E Sansom; M E Cluver; M Alpaslan; S Brough; M J I Brown; L J M Davies; S P Driver; M W Grootes; B W Holwerda; A M Hopkins; P A James; K Pimbblet; A S G Robotham; E N Taylor; L Wang
      We use data from the GAMA and GALEX surveys to demonstrate that the UV upturn, an unexpected excess of ultraviolet flux from a hot stellar component, seen in the spectra of many early-type galaxies, arises from processes ...