Search Publications
MHD study of the planetary magnetospheric response during extreme solar wind conditions: Earth and exoplanet magnetospheres applications
Pantellini, F.; Zarka, P.; Varela, J. +3 more
Context. The stellar wind and the interplanetary magnetic field modify the topology of planetary magnetospheres. Consequently, the hazardous effect of the direct exposition to the stellar wind, for example, regarding the integrity of satellites orbiting the Earth or the habitability of exoplanets, depends upon the space weather conditions.
Ai…
Molecular gas properties of Planck-selected protocluster candidates at z ≃ 1.3-3
Kneissl, R.; Dole, H.; Frye, B. L. +3 more
We report on IRAM 30-m/EMIR observations of 38 Herschel sources chosen as the brightest red submillimeter (submm) sources in 18 Planck-selected fields drawn from the Planck high-z (PHz) sample of protocluster candidates. These fields host overdensities of red Herschel sources, with high star formation rates (∼10 000 M⊙ yr−1),…
Dynamical masses for two M1 + mid-M dwarf binaries monitored during the SPHERE-SHINE survey
Henning, T.; Messina, S.; D'Orazi, V. +25 more
We present orbital fits and dynamical masses for HIP 113201AB and HIP 36985AB, two M1 + mid-M dwarf binary systems monitored as part of the SPHERE-SHINE survey. To robustly determine the age of both systems via gyrochronology, we undertook a photometric monitoring campaign for HIP 113201 and GJ 282AB, the two wide K star companions to HIP 36985, u…
Probing red supergiant dynamics through photo-center displacements measured by Gaia
Chiavassa, A.; de Mink, S. E.; Davies, B. +2 more
Context. Red supergiant (RSGs) are cool massive stars in a late phase of their evolution when the stellar envelope becomes fully convective. They are the brightest stars in the universe at infrared light and can be detected in galaxies far beyond the Local Group, allowing for accurate determination of chemical composition of galaxies. The study of…
A highly dynamic small-scale jet in a polar coronal hole
Teriaca, Luca; Solanki, Sami K.; Schühle, Udo +6 more
We present an observational study of the plasma dynamics at the base of a solar coronal jet, using high resolution extreme ultraviolet imaging data taken by the Extreme Ultraviolet Imager on board Solar Orbiter, and by the Atmospheric Imaging Assembly on board Solar Dynamics Observatory. We observed multiple plasma ejection events over a period of…
The morphology of CS Cha circumbinary disk suggesting the existence of a Saturn-mass planet
Bayo, A.; Ginski, C.; Pinilla, P. +8 more
Context. Planets have been detected in circumbinary orbits in several different systems, despite the additional challenges faced during their formation in such an environment.
Aims: We investigate the possibility of planetary formation in the spectroscopic binary CS Cha by analyzing its circumbinary disk.
Methods: The system was studied …
Lens parameters for Gaia18cbf - a long gravitational microlensing event in the Galactic plane
Mróz, P.; Gromadzki, M.; Narita, N. +29 more
Context. The timescale of a microlensing event scales as a square root of a lens mass. Therefore, long-lasting events are important candidates for massive lenses, including black holes.
Aims: Here, we present the analysis of the Gaia18cbf microlensing event reported by the Gaia Science Alerts system. It exhibited a long timescale and features…
The detection of transiting exoplanets by Gaia
Gomel, Roy; Mazeh, Tsevi; Audard, Marc +14 more
Context. The space telescope Gaia is mainly dedicated to performing high-precision astrometry but is also used to perform spectroscopy and epoch photometry, which can be used to study various types of photometric variability. One such variability type is exoplanetary transits. The photometric data accumulated so far have finally matured enough to …
The importance of Fe fragmentation for LiBeB analyses. Is a Li primary source needed to explain AMS-02 data?
Maurin, D.; Ferronato Bueno, E.; Génolini, Y. +2 more
Context. High-precision data from AMS-02 on Li, Be, and B provide the best constraints on Galactic cosmic-ray transport parameters.
Aims: We re-evaluate the impact of Fe fragmentation on the Li, Be, and B modelling. We discuss the consequences on the transport parameter determination and reassess whether a primary source of Li is needed to ma…
OCCASO. IV. Radial velocities and open cluster kinematics
Jordi, C.; Casamiquela, L.; Cantat-Gaudin, T. +8 more
Context. Open clusters (OCs) are widely used as test particles to investigate a variety of astrophysical phenomena, from stellar evolution to Galactic evolution. Gaia and the complementary massive spectroscopic surveys are providing an unprecedented wealth of information about these systems.
Aims: The Open Cluster Chemical Abundances from Spa…