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机译:Light curves and period changes of type II cepheids in the globular clusters M3 and M5
Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, United States;
Department of Physics, Central Michigan University, Mount Pleasant, MI 48859, United States;
Department of Physics and Astronomy, University of North Carolina-Greensboro, P.O. Box 26170, Greensboro, NC 27402, United StatesDepartment of Physics and Astronomy, Macalester College, 1600 Grand Avenue, Saint Paul, MN 55105, United States;
Globular clusters: individual (NGC 5272; NGC 5904); Stars: variables: Cepheids;