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Gaskell Dione Shape Model V1.0
Gaskell, R. W.
The shape model of Dione derived by Robert Gaskell from Cassini images. The model is provided in the implicitly connected quadrilateral (ICQ) format. This version of the model was prepared on July 23, 2012. Vertex-facet versions of the models are also provided.
On the question of detecting granulation signal in CoRoT light curves of A and B stars
Ghazaryan, S.
We applied the procedure written by us to HgMn targets observed both through CoRoT astero and exo channels to check its usefulness for search of possible existence of solar-type granulation signature in their power spectrum. The point is that many articles appeared very recently considering this problem but, we did not find any paper on this issue…
The Nearest Stars (Presidential Address)
Glass, I. S.
A history of star position measurements, leading to proper motions and parallax measurements is given, with special reference to the southern hemisphere, Alpha Cen and Proxima Cen. The Hipparcos and Gaia satellites are also mentioned.
A Research on the New Astronomical Reference Systems
Liu, J. C.
The research of astrometry encompasses all that is necessary to provide the positions and motions of celestial bodies, including observational techniques, instrumentations, processing and analysis of the observational data, reference systems and so on. In the latest decades, great progress has been made in astrometry, including the new theoretical…
Simulation of Low-Intensity, Low-Temperature Solar Arrays with Software and Hardware Tools
Topputo, F.; Bernelli-Zazzera, F.
In this work we discuss issues related to the simulation of low power systems with hardware means. Simulating low power systems is a challenging task as the possible low-intensity, low-temperature environment, together with possible dust deposition and ice condensation, worsen not only the production of power but also make it difficult to predict …
Study of CME Properties Using High Resolution Data
Fainshtein, V. G.; Egorov, Ya. I.
The joint use of high-resolution data from SDO and PROBA2 satellites and LASCO/SOHO coronographs enabled us to examine early stages of initiation and propagation of six limb CMEs registered in June 2010 - June 2011. For five events under consideration, the CME initiation is marked by filament (prominence) eruption or by a loop-like structure havin…
Comparative time-series analysis of MeV electron data by Ulysses and Pioneer 10/11 in the Jovian magnetosphere
Potgieter, M. S.; Heber, B.; Kopp, A. +1 more
The dynamics of the Jovian magnetosphere is dominated by the planet's fast rotation with a period of ~ 10 h. Within the magnetosphere, this periodicity can in particular be seen in the temporal variation of the spectral index of MeV electrons: every ~ 10 h the counting rates show a maximum (minimum), while the spectral index shows a minimum (maxim…
Gaskell Mimas Shape Model V2.0
Gaskell, R. W.
The shape model of Mimas derived by Robert Gaskell from Cassini ISSNA and ISSWA images and Voyager 1 ISSN images. The model is provided in the implicitly connected quadrilateral (ICQ) format. This version of the model was prepared on June 26, 2012. Vertex-facet versions of the models are also provided.
Observations of the Unique X--ray Emitting Subdwarf Stars HD 49798 and BD +37° 442
Tiengo, A.; Mereghetti, S.; Stella, L. +3 more
We report on the results we obtained with XMM observations of HD 49798 and BD +37° 442, the only two sdO stars for which X-ray emission has been observed so far. HD 49798 is a single-lined spectroscopic binary with orbital period of 1.5 days. We could establish that its companion is a massive white dwarf with M = 1.28 M_{⊙}, which makes it a candi…
X-ray luminosity functions of different morphological and X-ray type AGN populations
Castañeda, H.; Cepa, J.; Bongiovanni, A. +12 more
Luminosity functions are one of the most important observational clues when studying galaxy evolution over cosmic time. In this paper we present the X-ray luminosity functions for X-ray detected AGN in the SXDS and GWS fields. The limiting fluxes of our samples are 9.0 ×10-15 and 4.8 ×10-16 erg cm-2 s-1 …