SIMBAD references

2003ApJ...593L.117B - Astrophys. J., 593, L117-L120 (2003/August-3)

KH 15D: a star eclipsed by a large-scale dusty vortex.


Abstract (from CDS):

We propose that the large photometric variations of KH 15D are due to an eclipsing swarm of solid particles, trapped in a giant gaseous vortex rotating at ∼0.2 AU from the star. The efficiency of the capture-in-vortex mechanism easily explains the observed large optical depth. The weaker opacity at mid-eclipse is consistent with a size segregation and a slow concentration of the particles toward the center of the vortex. This dusty structure must extend over ~(1)/(3) of an orbit to account for the long eclipse duration. The estimated size of the trapped particles is found to range from 1 to 10 cm, consistent with the gray extinction of the star. The observations of KH 15D support the idea that giant vortices can grow in circumstellar disks and play a central role in planet formation.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - Hydrodynamics - Stars: Planetary Systems - Stars: Pre-Main-Sequence

Status at CDS:  

CDS comments: KH 15D = Cl* NGC 2264 VVO 15D.

Simbad objects: 2

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