An Inner Hole in the Disk around TW Hydrae Resolved in 7 Millimeter Dust Emission
Astrophysics
2009-06-23 v1
Abstract
We present Very Large Array observations at 7 millimeters wavelength that resolve the dust emission structure in the disk around the young star TW Hydrae at the scale of the ~4 AU (~0.16") radius inner hole inferred from spectral energy distribution modeling. These high resolution data confirm directly the presence of an inner hole in the dust disk and reveal a high brightness ring that we associate with the directly illuminated inner edge of the disk. The clearing of the inner disk plausibly results from the dynamical effects of a giant planet in formation. In an appendix, we develop an analytical framework for the interpretation of visibility curves from power-law disk models with inner holes.
Cite
@article{arxiv.0704.2422,
title = {An Inner Hole in the Disk around TW Hydrae Resolved in 7 Millimeter Dust Emission},
author = {A. M. Hughes and D. J. Wilner and N. Calvet and P. D'Alessio and M. J. Claussen and M. R. Hogerheijde},
journal= {arXiv preprint arXiv:0704.2422},
year = {2009}
}
Comments
8 pages, 4 figures, accepted by ApJ