- C. Dominik
- Accretion through the inner hole of transitional disks: what happens to the dust?
- Astronomy & Astrophysics
- Publication Year
- Document type
- article in journal
- Faculty of Science
- Astronomical Institute Anton Pannekoek (IAP)
We study the effect of radiation pressure on the dust in the inner rim of transitional disks with large inner holes. In particular, we evaluate whether radiation pressure can be responsible for keeping the inner holes dust-free, while allowing gas accretion to proceed. This has been proposed in a paper by Chiang & Murray-Clay (2007, Nature Phys., 3, 604) who explain the formation of these holes as an inside-out evacuation due to X-ray-triggered accretion of the innermost layer of the disk rim outside of the hole. We show that radiation pressure is clearly incapable of stopping dust from flowing into the hole because of dust pile-up and optical depth effects, and also because of viscous mixing. Other mechanisms need to be found to explain the persistence of the opacity hole in the presence of accretion, and we speculate on possible solutions.
- go to publisher's site
If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the University Library know, stating your reasons. In case of a legitimate complaint the University Library will make the material inaccessible and/or remove it from the website. Please send an e-mail to: email@example.com, or a letter to: Bibliotheek van de Universiteit van Amsterdam, Dept. Electronic Services, UvA-DARE, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.