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Sparse aperture masking observations of the FL Cha pre-transitional disk

Cieza, Lucas A; Lacour, Sylvestre; Schreiber, Matthias R; Casassus, Simon; Jordan, A; Mathews, Geoffrey S; Canovas, Hector; Menard, Francois; Kraus, Adam L; Perez, Sebastian; Tuthill, Peter G; Ireland, Michael

Description

We present deep Sparse Aperture Masking (SAM) observations obtained with the ESO Very Large Telescope of the pre-transitional disk object FL Cha (SpT = K8, d = 160 pc), the disk of which is known to have a wide optically thin gap separating optically thick inner and outer disk components. We find non-zero closure phases, indicating a significant flux asymmetry in the KS -band emission (e.g., a departure from a single point source detection). We also present radiative transfer modeling of the...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
URI: http://hdl.handle.net/1885/66313
Source: Astrophysical Journal Letters
DOI: 10.1088/2041-8205/762/1/L12

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