Journal Article

The observable effects of tidally induced warps in protostellar discs

C. J. Nixon and J. E. Pringle

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 403, issue 4, pages 1887-1893
Published in print April 2010 | ISSN: 0035-8711
Published online April 2010 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2010.16331.x
The observable effects of tidally induced warps in protostellar discs

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We consider the response of a protostellar disc to a tidally induced warp and the resultant changes in the spectral energy distribution (SED). We argue that for typical protostellar disc parameters the warp is communicated through the disc in a wave-like fashion. We find that the main effects of the warp tend to be at large radii (R≳ 30 au) and, for sufficiently small viscosity, can be quite long-lived. This can result in non-uniform illumination of the disc at these radii and can induce significant changes to the SED at wavelengths λ≳ 100 μm.

Keywords: accretion, accretion discs; stars: formation; stars: pre-main-sequence

Journal Article.  4400 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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