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The Rosetta video approach: An overview and lessons learned so far

Zender, J.; Schwehm, G.; Wilke, M.

After an interplanetary cruise of 10 years, the Rosetta spacecraft and Philae lander, will arrive in 2014 at comet Churyomov-Gerasimenkov. All involved parties are aware of the knowledge decrease during these years and the potential complications that might arise during problem resolution before or during cometary operations. The Rosetta Science O…

Hinode: A New Solar Observatory in Space

Hara, Hirohisa

The third Japanese solar observing satellite, SOLAR-B, was launched on 2006 Sep 23 from the Uchinoura Space Center of JAXA and it was named “Hinode” (sunrise). Hinode carries three major telescopes: Solar Optical Telescope (SOT), X-Ray Telescope (XRT), and Extreme-ultraviolet Imaging Spectrometer (EIS). These telescopes have been built in an inter…

Characteristics of cumulative particle fluences at different heliospheric radii

Király, Péter

Normalized cumulative particle fluence plots are very useful for characterizing the variability of interplanetary suprathermal and energetic particle fluxes on various time scales. For some applications it is practicable to describe the deviations of annual fluence plots from straight lines by a single parameter (the Kolmogorov or K parameter), an…

Multiple Period Search for K, M and C Type Semiregular Variables in TÜBITAK National Observatory

Yeşilyaprak, Cahit; Sahin, Timur; Iskender, Ahmet

In this study, periods obtained from long-term multi-bands (Johnson V and R filters) photometric observations of some K, M and C spectral type semiregular (SR) variables obtained with the T40 telescope (40 cm) and SSP5A photometer at TÜBITAK National Observatory (TNO) between 1998 and 2005 were examined. We have found that some of these SR variabl…

Microquasars: A Brief Overview and a Snapshot of GRS 1915+105 with INTEGRAL

Rodriguez, J.; Hannikainen, D. C.

Microquasars, sources of relativistic motion, have generated a lot of interest since their discovery. In this paper we shall briefly review some general properties of microquasars, and then focus on some recent observations of one of the more notorious microquasars, GRS 1915+105.

Emission Lines in 32 Cygni

Eaton, J. A.

I identify the profusion of emission lines seen in IUE spectra of 32 Cyg (K4-5 Ib+B6-7 IV-V) during total eclipse. With the exception of a very few weak lines, all of these are also seen in zeta Aur during its eclipse, and the stronger features appear in 31 Cyg. Seventy-four percent of these emission lines can be attributed to Fe II. Few are intri…

The upper atmosphere of Venus observed by Venus Express

López-Valverde, M. A.; Gilli, G.; García-Comas, M. +3 more

The upper atmosphere of Venus is still nowadays a highly unknown region in the scientific context of the terrestrial planetary atmospheres. The Earth's stratosphere and mesosphere continue being studied with increasingly sophisticated sounders and in-situ instrumentation. Also on Mars, its intensive on-going exploration is gathering a whole new se…

How unique is the local region of the Galaxy disk?

Heiter, U.; Luck, R. E.

We present the results of a spectroscopic study of over 500 dwarf and giant stars within 100 pc of the Sun. Using stellar metallicity data, the goal of this study is to determine whether there are any significant variations of metallicity related to stellar characteristics or location in the Galaxy. The abundance data are based on high-resolution …

Planetary science: Saturn's southern eye

Langenberg, Heike

Introduction to special section on Double Star-Cluster Coordinated Studies on Magnetospheric Dynamic Processes

Escoubet, C. P.; Zong, Q. -G.; Liu, Z. X. +1 more