Evidence for Growth of Eccentricity and Mass Clearing in a Disc Interior to a Planet

Details Evidence for Growth of Eccentricity and Mass Clearing in a Disc Interior to a Planet Evidence for Growth of Eccentricity and Mass Clearing in a Disc Interior to a Planet

2007-06-19

arxiv.org/abs/0706.2801v1

Astronomy and Astrophysics

Astrophysics

Submitted to New Astronomy, 14 pages

Scientific paper

We present computational results showing eccentricity growth in the inner portions of a protoplanetary disc. We attribute this to the evolving surface density of the disc. The planet creates a gap, which adjusts the balance between the 3:1 (eccentricity exciting) and 2:1 (eccentricity damping) resonances. The eccentricity of the inner disc can rise as high as 0.3, which is sufficient to cause it to be accreted onto the star. This offers an alternative mechanism for producing the large holes observed in the discs of CoKu Tau/4, GM Aur and DM Tau.

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