2011A&A...531A.101D


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.03CET13:24:13

2011A&A...531A.101D - Astronomy and Astrophysics, volume 531A, 101-101 (2011/7-1)

Accretion through the inner hole of transitional disks: what happens to the dust?.

DOMINIK C. and DULLEMOND C.P.

Abstract (from CDS):

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.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - circumstellar matter - stars: pre-main sequence - infrared: stars - planets and satellites: formation

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* DM Tau Or* 04 33 48.7335659850 +18 10 09.974471722 14.30 14.82 14.00     M2Ve 524 0
2 V* GM Aur Or* 04 55 10.9813656049 +30 21 59.375978047 14.59 14.22 13.10     K3Ve 560 0
3 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1571 1
4 HD 100546 Be* 11 33 25.4404858122 -70 11 41.239343121   6.71 6.30   6.64 A0VaekB8_lB 661 1

    Equat.    Gal    SGal    Ecl

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2020.12.03-13:24:13

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