Institution: | Astronomical Observatory, Jagiellonian University, Orla 171, Cracow, Poland,;Department of Physics, University of California, Santa Barbara, CA 93106, USA,;N. Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland,;Naval Research Laboratory, Code 7651, 4555 Overlook Ave. SW, Washington, DC 20375-5352, USA,;NASA/GSFC, Code 668, Greenbelt, MD 20771, USA |