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16 papers · 2 filters
Discovery of a low-mass companion inside the debris ring surrounding the F5V star HD206893
Julien Milli, Pascale Hibon, Valentin Christiaens +30
Uncovering the ingredients and the architecture of planetary systems is a very active field of research that has fuelled many new theories on giant planet formation, migration, com…
Stability of sulphur dimers S2 in cometary ices
O. Mousis, O. Ozgurel, J. I. Lunine +5
S2 has been observed for decades in comets, including comet 67P/Churyumov-Gerasimenko. Despite the fact that this molecule appears ubiquitous in these bodies, the nature of its sou…
Spectroscopic characterisation of microlensing events Towards a new interpretation of OGLE-2011-BLG-0417
A. Santerne, J. -P. Beaulieu, B. Rojas Ayala +14
The microlensing event OGLE-2011-BLG-0417 is an exceptionally bright lens binary that was predicted to present radial velocity variation at the level of several km/s. Pioneer radia…
On Correlated-noise Analyses Applied To Exoplanet Light Curves
Patricio Cubillos, Joseph Harrington, Thomas J. Loredo +3
Time-correlated noise is a significant source of uncertainty when modeling exoplanet light-curve data. A correct assessment of correlated noise is fundamental to determine the true…
Long-Lived Dust Asymmetries at Dead Zone Edges in Protoplanetary Disks
Ryan Miranda, Hui Li, Shengtai Li +1
A number of transition disks exhibit significant azimuthal asymmetries in thermal dust emission. One possible origin for these asymmetries is dust trapping in vortices formed at th…
Imaging an 80 AU Radius Dust Ring Around the F5V Star HD 157587
Maxwell A. Millar-Blanchaer, Jason Wang, Paul Kalas +55
We present -band near-infrared polarimetric imaging observations of the F5V star HD~157587 obtained with the Gemini Planet Imager (GPI) that reveal the debris disk as a bright r…