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Coregistration of Mars Orbiter Laser Altimeter (MOLA) topography with high-resolution Mars images

Kolb, Kelly J.; Okubo, Chris H.

Spacecraft continue to send back extraordinary amounts of data from Mars leaving scientists with the considerable task of analyzing an ever-increasing wealth of information. There are abundant uses for coregistered topography and images, but coregistering various datasets can be time-consuming and labor-intensive. We have developed a set of C-shel…

Notices to investigation of symbiotic binaries IV. Optical light curves from the near-ultraviolet

Skopal, A.

The aim of this note is to reconstruct optical light curves (LC) from the near-UV fluxes of the ultraviolet spectra of symbiotic binaries during their quiescent phases. The method is based on the fact that the nebular component of radiation dominates the near-UV during quiescent phases and represents the main source of the light variability in the…

Gradual Solar Energetic Particle Event Associated with a Decelerating Shock Wave

Laitinen, T.; Valtonen, E.; Kocharov, L. +3 more

On 2000 April 4-6 the Energetic and Relativistic Nuclei and Electron particle telescope on the Solar and Heliospheric Observatory spacecraft observed a major solar energetic particle (SEP) event associated with two coronal mass ejections (CMEs) separated by approximately 8 hr. The first CME was accompanied by a low-frequency type II radio burst ob…

CLUSTER and IMAGE: New Ways to Study the Earth's Plasmasphere

de Keyser, Johan; Carpenter, Donald L.; Darrouzet, Fabien +2 more

Ground-based instruments and a number of space missions have contributed to our knowledge of the plasmasphere since its discovery half a century ago, but it is fair to say that many questions have remained unanswered. Recently, NASA’s Image and ESA’s Cluster probes have introduced new observational concepts, thereby providing a non-local view of t…

Kinematics and Velocity Ellipsoid of the K Giants

Branham, R. L., Jr.

To study the kinematics of the K giant stars (luminosity class III) use is made of proper motions taken from van Leeuwen's new reduction of the Hipparcos catalog. 11,372 stars, of which 880 have radial velocities, were used in the final study. Semi-definite programming solves for the kinematical parameters such as the Oort constants and simultaneo…

Stellar populations in a standard ISOGAL field in the Galactic disc

Ganesh, S.; Omont, A.; Schultheis, M. +4 more

Aims: We identify the stellar populations (mostly red giants and young stars) detected in the ISOGAL survey at 7 and 15 µm towards a field (LN45) in the direction ℓ=-45, b=0.0.
Methods: The sources detected in the survey of the Galactic plane by the Infrared Space Observatory were characterised based on colour-colour and colour-magnitude…

The Cassini Extended Mission

Seal, David A.; Buffington, Brent B.

Based on the overwhelming success of the Cassini/Huygens 4-year tour of Saturn from July 2004 to June 2008, NASA Headquarters approved at least two years of extended mission for continued study of the target-rich Saturnian system. After a rigorous phase of science objective definition and trajectory design and analysis, the Cassini project initiat…

Counterpart candidates to the unidentified Fermi source 0FGL J1848.6-0138

Combi, J. A.; Luque-Escamilla, P. L.; Martí, J. +3 more

Aims. We aim to contribute to the identification of the counterpart for one of the bright sources of gamma-rays in the catalogue obtained and released by the Fermi collaboration.
Methods: Our work is based on a extensive identification of sources from different wavelength catalogues and databases.
Results: As a first result, we report the …

Analysis of Kinetic Process of Energetic Electron During a Flare on 2004 December 1

Yan, Yihua; Huang, Jing

We analyze the M1.1 flare event peaked at 07:20:00 UT on 2004 December 1 mainly from radio and hard X-ray (HXR) observations. By eliminating the thermal component from the observed total radio emission flux, the non-thermal part of the radio and HXR burst process is investigated in a self-consistent way. The spectral index of energetic electrons d…

The Tycho-2 Catalogue: a reference for astrometry and photometry. Combining the most modern and the oldest astrometric data. Commentary on: Høg E., Fabricius C., Makarov V. V., et al., 2000, A&A, 355, L27

Turon, C.