496 citations
- Laboratoire d’études spatiales et d’instrumentation en astrophysiqueFR27 papers
- Centre National de la Recherche ScientifiqueFR26 papers
- Galaxies, Etoiles, Physique et InstrumentationFR20 papers
- Observatoire de ParisFR13 papers
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- Laboratoire d’Astrophysique de MarseilleFR7 papers
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13 papers · 1 filter
Hanle effect in the solar Ba II D2 line: a diagnostic tool for chromospheric weak magnetic fields
M. Faurobert, M. Derouich, V. Bommier +1
The physics of the solar chromosphere depends in a crucial way on its magnetic structure. However there are presently very few direct magnetic field diagnostics available for this…
Discovery of two distinct polarimetric behaviours of trans-Neptunian objects
S. Bagnulo, I. Belskaya, K. Muinonen +4
Trans-Neptunian objects (TNOs) contain the most primitive and thermally least-processed materials from the early accretional phase of the solar system. They allow us to study inter…
Comparison of coronagraphs for high contrast imaging in the context of Extremely Large Telescopes
P. Martinez, A. Boccaletti, M. Kasper +4
We compare coronagraph concepts and investigate their behavior and suitability for planet finder projects with Extremely Large Telescopes (ELTs, 30-42 meters class telescopes). For…
Magnetic fields and chemical peculiarities of the very young intermediate-mass binary system HD 72106
C. P. Folsom, G. A. Wade, O. Kochukhov +9
The recently discovered magnetic Herbig Ae and Be stars may provide qualitatively new information about the formation and evolution of magnetic Ap and Bp stars. We have performed a…
The EUV Sun as the superposition of elementary Suns
P. -O. Amblard, S. Moussaoui, T. Dudok de Wit +4
Many studies assume that the solar irradiance in the EUV can be decomposed into different contributions, which makes the modelling of the spectral variability considerably easier.…
A seismic approach to testing different formation channels of subdwarf B stars
Haili Hu, M. -A. Dupret, C. Aerts +5
There are many unknowns in the formation of subdwarf B stars. Different formation channels are considered to be possible and to lead to a variety of helium-burning subdwarfs. All s…