Institution: | Korean Astronomy Observatory, Optical Astronomy Division, 61-1, Whaam-Dong, Yuseong-Gu, Daejon 305-348, Korea;Special Astrophysical Observatory, Nizhnij Arkhyz 369167, Russia;Dipartimento di Metodologia Fisiche e Chimiche per l 'Ingegneria, viale Doria 6, Catania I-95125, Sicily, Italy;Center for Astronomy, Nicholas Copernicus University, Gagarina 11, ToruńPl-87-100, Poland |