Polarimetric observations of the Galilean satellites near opposition in 2011

• Published in: Advances in Astronomy and Space Physics
• Date: 2012
• Main Authors: Zaitsev, S.V., Kiselev, N.N., Rosenbush, V.K., Velichko, F.P., Kolesnikov, S.V., Antonyuk, K.A., Psarev, V.N.
• Format: Article
• Language: English
• Published: Головна астрономічна обсерваторія НАН України 2012
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/119395
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Polarimetric observations of the Galilean satellites near opposition in 2011 / S.V. Zaitsev, N.N. Kiselev, V.K. Rosenbush, F.P. Velichko, S.V. Kolesnikov, K.A. Antonyuk, V.N. Psarev // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 177-179. — Бібліогр.: 14 назв. — англ.

We present results of the new polarimetric observations of the Galilean satellites Io, Ganymede, Europe, and Callisto carried out on October 21 - November 1, 2011. We used 1.25m telescope equipped with the UBVRI double image chopping photoelectric polarimeter, 2.6m Shain telescope equipped with a one-channel photoelectric photometer-polarimeter, 1m RCC telescope equipped with a one-channel photoelectric photometer-polarimeter (Crimean Astrophysical Observatory, Ukraine), and 0.7m telescope equipped with a one-channel photoelectric photometer-polarimeter (Chuguev Observational Station of Astronomical Institute of Karazin Kharkiv National University, Ukraine). The measurements were performed at phase angles ranging from 0.34° to 2.12°. Our new observations fully confirmed the presence of the polarization opposition effect for high-albedo satellites Io, Europa, and Ganymede at phase angles less than 2° . Within the accuracy of the measurements we did not detect the polarization opposition effect for moderate-albedo satellite Callisto.