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35 papers · 1 filter
The FALCON concept: multi-object adaptive optics and atmospheric tomography for integral field spectroscopy. Principles and performances on an 8 meter telescope
Francois Assemat, Eric Gendron, Francois Hammer
Integral field spectrographs are major instruments to study the mechanisms involved in the formation and the evolution of early galaxies. When combined with multi-object spectrosco…
Investigating the pre-main sequence magnetic chemically peculiar system HD 72106
C. P. Folsom, G. A. Wade, D. A. Hanes +7
The origin of the strong magnetic fields observed in chemically peculiar Ap and Bp stars stars has long been debated. The recent discovery of magnetic fields in the intermediate ma…
Uncertainties of the masses of black holes and Eddington ratios in AGN
Suzy Collin
Black hole masses in Active Galactic Nuclei have been determined in 35 objects through reverberation mapping of the emission line region. I mention some uncertainties of the method…
Determination of the light curve of the Rosetta target Asteroid (2867) Steins by the OSIRIS cameras onboard Rosetta
M. Kueppers, S. Mottola, S. C. Lowry +9
Context: In 2004 asteroid (2867) Steins has been selected as a flyby target for the Rosetta mission. Determination of its spin period and the orientation of its rotation axis are e…
MHD of rotating compact stars with spectral methods: description of the algorithm and tests
S. Bonazzola, L. Villain, M. Bejger
A flexible spectral code for the study of general relativistic magnetohydrodynamics is presented. Aiming at investigating the physics of slowly rotating magnetized compact stars, t…
Soft-excess in ULX spectra: disc emission or wind absorption?
A. C. Goncalves, R. Soria
We assess the claim that Ultra-luminous X-ray sources (ULXs) host intermediate-mass black holes (BH) by comparing the cool disc-blackbody model with a range of other models, namell…