Institution: | Princeton University Observatory, Princeton, NJ 08544-1001, USA;Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland;Universidad de Concepción, Departamento de Fisica, Casilla 160-C, Concepción, Chile;Los Alamos National Laboratory, MS-D436, Los Alamos, NM 87545, USA |