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Potential multi-component structure of the debris disk around HIP 17439 revealed by Herschel/DUNES
S. Ertel, J. P. Marshall, J. -C. Augereau +16
[abridged] Aims. Our Herschel Open Time Key Programme DUNES aims at detecting and characterizing debris disks around nearby, sun-like stars. In addition to the statistical analysis…
Can eccentric debris disks be long-lived? A first numerical investigation and application to Reticuli
V. Faramaz, H. Beust, P. Thébault +13
Imaging of debris disks has found evidence for both eccentric and offset disks. One hypothesis is that these provide evidence for massive perturbers that sculpt the observed struct…
An independent determination of Fomalhaut b's orbit and the dynamical effects on the outer dust belt
Hervé Beust, Jean-Charles Augereau, Amy Bonsor +7
The nearby star Fomalhaut harbours a cold, moderately eccentric dust belt with a sharp inner edge near 133 au. A low-mass, common proper motion companion (Fom b), was discovered ne…
Grain Size segregation in debris discs
Philippe Thebault, Quentin Kral, Jean-Charles Augereau
In most debris discs, dust grain dynamics is strongly affected by stellar radiation pressure. As this mechanism is size-dependent, we expect dust grains to be spatially segregated…
Multiple spiral patterns in the transitional disk of HD 100546
A. Boccaletti, E. Pantin, A. -M. Lagrange +3
Protoplanetary disks around young stars harbor many structures related to planetary formation. Of particular interest, spiral patterns were discovered among several of these disks…
Gas lines from the 5-Myr old optically thin disk around HD141569A. Herschel observations and modeling
Wing-Fai Thi, Christophe Pinte, Eric Pantin +20
At the distance of 99-116 pc, HD141569A is one of the nearest HerbigAe stars that is surrounded by a tenuous disk, probably in transition between a massive primordial disk and a de…