tokens: We thank a number of unnamed colleagues for interesting discussions. G.Ö. is a Royal Swedish Academy of Science research fellow (supported by a grant from the Knut Alice Wallenbergs foundation). This work was supported by the Swedish Research Council and the Swedish National Space Board. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of NASA’s Astrophysics Data System.
ner_tags: O O O O O O O O O O B-Person O O B-Fellowship I-Fellowship I-Fellowship I-Fellowship I-Fellowship I-Fellowship I-Fellowship O O O O O O B-Organization I-Organization I-Organization I-Organization O O O O O O B-Organization I-Organization I-Organization O O B-Organization I-Organization I-Organization I-Organization O O O O O O O B-Database I-Database I-Database B-Database O O O O O B-Organization I-Organization I-Organization B-Organization I-Organization I-Organization I-Organization O O O O B-Organization I-Organization I-Organization I-Organization I-Organization O O O O O O B-Archive I-Archive I-Archive I-Archive