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机译:Galactic cepheids with Spitzer. II. Search for extended infrared emission
Department of Physics and Astronomy, University of Western Ontario, London, ON N6A 3K7, Canada;
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, United States;
Department of Physics, Universit?a di Roma Tor Vergata, via della Ricerca Scientifica 1, I-00133 Roma, ItalySteward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, United StatesDepartment of Physics and Astronomy, McMaster University, Hamilton, ON L8S 4M1, Canada;
Infrared: Stars; Stars: Mass-loss; Stars: Variables: Cepheids;