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Supermassive Black Holes in Galactic Nuclei: Past, Present and Future Research

Ford, Holland; Ferrarese, Laura

This review discusses the current status of supermassive black hole research, as seen from a purely observational standpoint. Since the early ‘90s, rapid technological advances, most notably the launch of the Hubble Space Telescope, the commissioning of the VLBA and improvements in near-infrared speckle imaging techniques, have not only given us i…

Deep Impact: Working Properties for the Target Nucleus Comet 9P/Tempel 1

Fernández, Yanga R.; A'Hearn, Michael F.; Pittichová, Jana +13 more

In 1998, Comet 9P/Tempel 1 was chosen as the target of the Deep Impact mission (A’Hearn, M. F., Belton, M. J. S., and Delamere, A., Space Sci. Rev., 2005) even though very little was known about its physical properties. Efforts were immediately begun to improve this situation by the Deep Impact Science Team leading to the founding of a worldwide o…

Io's Atmosphere and Surface-Atmosphere Interactions

Lellouch, Emmanuel

Our knowledge of Io’s atmosphere has improved dramatically in the last fifteen years, with a wealth of new observational data at millimeter, UV and IR wavelengths, and the development of numerous models describing its horizontal and vertical structure, composition, photochemistry and plasma interaction. Io’s atmosphere is dominantly composed of SO…