The Herbig Ae star HD 139614 is a group-Ib object, which featureless SED indicates disk flaring and a possible pre-transitional evolutionary stage. We present mid- and near-IR interferometric results collected with MIDI, AMBER and PIONIER with the aim of constraining the spatial structure of the 0.1-10 AU disk region and assess its possible multi-component structure. A two-component disk model composed of an optically thin 2-AU wide inner disk and an outer temperature-gradient disk starting at 5.6 AU reproduces well the observations. This is an additional argument to the idea that group-I HAeBe inner disks could be already in the disk-clearing transient stage. HD 139614 will become a prime target for mid-IR interferometric imaging with the second-generation instrument MATISSE of the VLTI.
@article{arxiv.1408.3876,
title = {HD139614: the interferometric case for a group-Ib pre-transitional young disk},
author = {Lucas Labadie and Alexis Matter and Alexander Kreplin and Bruno Lopez and Sebastian Wolf and Gerd Weigelt and Steve Ertel and Jean-Philippe Berger and Jorg-Uwe Pott and William C. Danchi},
journal= {arXiv preprint arXiv:1408.3876},
year = {2015}
}
Comments
SPIE Astronomical Telescopes and Instrumentation conference, June 2014, 11 pages, 7 Figures