Institute of Astronomy

Image synthesis of the gap in HD100546 with Sparse Aperture Masking

SpeakerTalk DateTalk Series
Sebastian Marino28 July 2014Across HR 2014 Posters


HD100546, an Herbig Ae/Be star at a distance of 100 pc, is surrounded by a prominent circumstellar disk. A gap in the radial profile of the dust and gas surface densities has been inferred from SED and line profile modeling. This gap is 10AU or 0.1arcsec in radius, and its existence is thought to be due to dynamical clearing by a massive protoplanet. We report on observations at 3.81um of HD100546, obtained with NACO+VLT Sparse Aperture Masking. Using the MIRA image synthesis package, we have imaged a ring at a radius of ~10 AU. We performed different regularization methods obtaining the same results. We also report on a comparison with radiative transfer predictions based on the SED parametric models.