The SPHERE view of the planet-forming disk around HD100546
Abstract
We image with unprecedented spatial resolution and sensitivity disk features that could be potential signs of planet-disk interaction. Two companion candidates have been claimed in the disk around the young Herbig Ae/Be star HD100546. Thus, this object serves as an excellent target for our investigation of the natal environment of giant planets. We exploit the power of extreme adaptive optics operating in conjunction with the new high-contrast imager SPHERE to image HD100546 in scattered light. We obtain the first polarized light observations of this source in the visible (with resolution as fine as 2 AU) and new H and K band total intensity images that we analyze with the Pynpoint package. The disk shows a complex azimuthal morphology, where multiple scattering of photons most likely plays an important role. High brightness contrasts and arm-like structures are ubiquitous in the disk. A double-wing structure (partly due to ADI processing) resembles a morphology newly observed in inclined disks. Given the cavity size in the visible (11 AU), the CO emission associated to the planet candidate 'c' might arise from within the circumstellar disk. We find an extended emission in the K band at the expected location of 'b'. The surrounding large-scale region is the brightest in scattered light. There is no sign of any disk gap associated to 'b'.
Keywords
Cite
@article{arxiv.1601.04983,
title = {The SPHERE view of the planet-forming disk around HD100546},
author = {Antonio Garufi and Sascha P. Quanz and Hans Martin Schmid and Gijs D. Mulders and Henning Avenhaus and Anthony Boccaletti and Christian Ginski and Maud Langlois and Tomas Stolker and Jean-Charles Augereau and Myriam Benisty and Bruno Lopez and Carsten Dominik and Raffaele Gratton and Thomas Henning and Markus Janson and Francois Menard and Michael R. Meyer and Christophe Pinte and Elena Sissa and Arthur Vigan and Alice Zurlo and Andreas Bazzon and Esther Buenzli and Mickael Bonnefoy and Wolfgang Brandner and Gael Chauvin and Anthony Cheetham and Maxime Cudel and Silvano Desidera and Markus Feldt and Raphael Galicher and Markus Kasper and Anne-Marie Lagrange and Justine Lannier and Anne-Lise Maire and Dino Mesa and David Mouillet and Sebastien Peretti and Clement Perrot and Graeme Salter and Francois Wildi},
journal= {arXiv preprint arXiv:1601.04983},
year = {2016}
}
Comments
Accepted by A&A. 13 pages, 5 figures