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NaCo polarimetric observations of Sz 91 transitional disk: a remarkable case of dust filtering
Karina Maucó, Johan Olofsson, Hector Canovas +10
We present polarized light observations of the transitional disk around Sz 91 acquired with VLT/NaCo at (1.7m) and (2.2m) bands. We resolve the disk and detect pola…
Long lived dust rings around HD169142
Claudia Toci, Giuseppe Lodato, Davide Fedele +2
Recent ALMA observations of the protoplanetary disc around HD~169142 reveal a peculiar structure made of concentric dusty rings: a main ring at 20 au, a triple system of ring…
Flybys in protoplanetary discs: II. Observational signatures
Nicolás Cuello, Fabien Louvet, Daniel Mentiplay +14
Tidal encounters in star clusters perturb discs around young protostars. In Cuello et al. (2019a, Paper I) we detailed the dynamical signatures of a stellar flyby in both gas and d…
Signatures of an eccentric disc cavity: Dust and gas in IRS 48
Josh Calcino, Daniel J. Price, Christophe Pinte +5
We test the hypothesis that the disc cavity in the `transition disc' Oph IRS 48 is carved by an unseen binary companion. We use 3D dust-gas smoothed-particle hydrodynamics simulati…
An Exo-Kuiper Belt and An Extended Halo around HD 191089 in Scattered Light
Bin Ren, Élodie Choquet, Marshall D. Perrin +70
We have obtained Hubble Space Telescope STIS and NICMOS, and Gemini/GPI scattered light images of the HD 191089 debris disk. We identify two spatial components: a ring resembling K…
The inner dust shell of Betelgeuse detected by polarimetric aperture-masking interferometry
X. Haubois, B. Norris, P. G. Tuthill +9
Theory surrounding the origin of the dust-laden winds from evolved stars remains mired in controversy. Characterizing the formation loci and the dust distribution within approximat…