Search Publications

On the morphology of the compact dust shell in the symbiotic system HM Sagittae

Chesneau, O.; Sacuto, S.

Context: The symbiotic system HM Sagittae consists of a Mira star and a secondary White Dwarf component. The dust content of the system was severely affected by the nova outburst in 1975, which is still ongoing. The capabilities of optical interferometry operating in the mid-IR allow us to investigate the current geometry of the…

Spectral and thermodynamic constraints on the existence of gypsum at the Juventae Chasma on Mars

Kuzmin, R. O.; Evdokimova, N. A.; Mironenko, M. V.

The spectral imaging of the Mars obtained with the Mars Express/OMEGA experiment demonstrates that a majority of the sulfates-rich regions are associated with the interior light-toned layered deposits within the canyon system in the equatorial zone of the planet. While all sulfates-rich deposits inside the canyons are characterized by the presence…

A Further Drop into Quiescence by the Eclipsing Neutron Star 4U 2129+47

Chakrabarty, Deepto; Nowak, Michael A.; Lin, Jinrong

The low-mass X-ray binary 4U 2129+47 was discovered during a previous X-ray outburst phase and was classified as an accretion disk corona source. A 1% delay between two mid-eclipse epochs measured ~22 days apart was reported from two XMM-Newton observations taken in 2005, providing support to the previous suggestion that 4U 2129+47 might be in a h…

Analysis of thermal emission from the nightside of Venus at 1.51 and 1.55 µm

Carlson, R. W.; Erard, S.; Irwin, P. G. J. +7 more

We present radiative transfer modelling of thermal emission from the nightside of Venus in two 'spectral window' regions at 1.51 and 1.55 µm. The first discovery of these windows, reported by Erard et al. [Erard, S., Drossart, P., Piccioni, G., 2009. J. Geophys. Res. Planets 114, doi:10.1029/2008JE003116. E00B27], was achieved using a princi…

Orientations of very faint galaxies in the Coma cluster

Ilbert, O.; Pelló, R.; Adami, C. +5 more

Context: Models of large scale structure formation predict the existence of preferential orientations for galaxies in clusters.
Aims: We have searched for preferential orientations of very faint galaxies in the Coma cluster (down I_Vega ∼-11.5).
Methods: By applying a deconvolution method to deep u^* and I band images of the Coma…

Titan's exosphere and its interaction with Saturn's magnetosphere

Dandouras, Iannis; Krupp, Norbert; Krimigis, Stamatios M. +4 more

Short-period variability in the galactic cosmic ray intensity: High statistical resolution observations and interpretation around the time of a Forbush decrease in August 2006

Mulligan, T.; Galametz, M.; Leske, R. A. +4 more

On 20 August 2006 a Forbush decrease observed at Polar in the Earth's magnetosphere was also seen at the INTEGRAL spacecraft outside the magnetosphere during a very active time in the solar wind. High-resolution energetic particle data from ACE SIS, the Polar high-sensitivity telescope, and INTEGRAL's Ge detector saturation rate, which measures th…

A dynamical study of the wide hierarchic triple star ADS 10288

Kiselev, A. A.; Romanenko, L. G.; Gorynya, N. A.

We have performed the first dynamical study of the relative motions of the components of the wide hierarchic triple star system ADS 10288 (GL 649.1 = WDS 16579+4722), based on a 15-year series of photographic observations with the 26″ Pulkovo refractor, supplemented with data from the WDS catalog, HIPPARCOS parallaxes, and radial velocities of the…

The symbiotic system CH Cygni: An analysis of the shocked nebulae at different epochs

Rafanelli, P.; Angeloni, R.; Contini, M.

We analyse the line and continuum spectra of the symbiotic system CH Cygni. We adopt the colliding-wind model to explain the symbiotic system at different phases. Peculiar observed features such as flickering, radio variation, X-ray emission, as well as the distribution of the nebulae and shells throughout the system are investigated by modelling …

Radio and X-Ray Properties of Submillimeter Galaxies in the A2125 Field

Menten, K. M.; Bertoldi, F.; Voss, H. +4 more

We present the radio and X-ray properties of 1.2 mm MAMBO source candidates in a 1600 arcmin² field centered on the Abell 2125 galaxy cluster at z = 0.247. The brightest, nonsynchrotron millimeter source candidate in the field has a photometric redshift z = 3.93^+1.11 _-0.80 and is not detected in a 31 ks Chandra X-r…