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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.
The core fundamental plane of B2 radio galaxies
Falomo, R.; Fanti, R.; Parma, P. +2 more
Context: The photometric, structural and kinematical properties of the centers of elliptical galaxies harbour important information on the formation history of galaxies. In the case of non-active elliptical galaxies, these properties are linked in a way that surface brightness, break radius and velocity dispersion of the core lie on a fundamental …
HD 51106 and HD 50747: an ellipsoidal binary and a triple system observed with CoRoT
Auvergne, M.; Amado, P. J.; Poretti, E. +13 more
Context: We present an analysis of the observations of HD 51106 and HD 50747 by the satellite CoRoT, obtained during its initial run, and of the spectroscopic preparatory observations.
Aims: We complete an analysis of the light curve, extract the main frequencies observed, and discuss some preliminary interpretations about the stars.
Metho…
Catalogue of ISO LWS observations of asteroids
Müller, T. G.; Hormuth, F.
Context: The long wavelength spectrometer (LWS) onboard the infrared space observatory (ISO) observed the four large main-belt asteroids
Solar wind elemental abundances related to the Sun's open magnetic flux
Wurz, P.; Klecker, B.; Wang, X.
Context: We present an investigation of the effects of solar magnetic field on the elemental abundance ratios of heavy ions in the solar wind.
Aims: We compare the elemental abundance ratios Fe/O, Si/O, Mg/O, Ne/O, and C/O over the 23rd solar cycle, attention being given to the varying fraction of open magnetic flux on the visible side of the …
The solar plasma conditions in the source regions of two explosive events
Wilhelm, K.; Mendoza-Torres, J. E.; Lara, A.
We analyze the ultraviolet emission during two explosive events (EEI and EEII) recorded by SUMER aboard SOHO in the wavelength range from 749 Å to 789 Å. The events occurred near the centre of the solar disk on 17 November 1996. An attempt is made to separate the emission of the primary energy release from that of the accelerated plasma. We want t…
A low luminosity state in the massive X-ray binary SAX J0635+0533
Mereghetti, S.; La Palombara, N.
The X-ray pulsar SAX J0635+0533 was repeatedly observed with the XMM-Newton satellite in 2003-2004. The precise localization provided by these observations confirms the association of SAX J0635+0533 with a Be star. The source was found, for the first time, in a low-intensity state, a factor ~30 lower than that seen in all previous observations. Th…
On the predictability of unstable satellite motion around elongated celestial bodies
Mysen, E.
Context: Close satellite orbits around small and elongated celestial bodies can experience massive aperiodic changes in shape. According to a number of published works, the changes are continuous functions of the orbit elements of the satellite's unperturbed trajectory.
Aims: Later research, however, has revealed that the onset of instability …
Results from DROXO. I. The variability of fluorescent Fe 6.4 keV emission in the young star Elias 29. High-energy electrons in the star's accretion tubes?
Micela, G.; Favata, F.; Giardino, G. +3 more
Polycyclic aromatic hydrocarbon selected galaxies
Siebenmorgen, R.; Haas, M.; Chini, R. +3 more
Context: This is the fourth in a series of papers based on the ISOCAM Parallel Survey at 6.7 µm. While the first three papers have been devoted to active galactic nuclei (AGN), here we report on emission-line galaxies without AGN signatures in their optical spectra.
Aims: Polycyclic aromatic hydrocarbon (PAH) emission has been found in b…