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Cited by 621

The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.

The dispersal of circumstellar discs: the role of the ultraviolet switch

Clarke, C. J., Gendrin, A., Sotomayor, M.·2001·Monthly Notices of the Royal Astronomical Society
DOI 10.1046/j.1365-8711.2001.04891.x
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Abstract

We explore ultraviolet switch models for the dispersal of circumstellar discs in T Tauri stars that involve both photoevaporation by the central star and viscous evolution. We show that in combination these processes generate the observed ‘two-time-scale’ behaviour for the dispersal of such discs, whereby the disc is rapidly dispersed at the end of its life on a time-scale that is a small fraction of the disc lifetime. This switch is activated when the accretion rate through the disc declines to a low level (a few times 10−10 M⊙ yr−1) such that it roughly matches the rate of photoevaporative mass loss from the disc outside 5–10. At this point, the inner disc is deprived of further replenishment from larger radii and empties on to the central star on its own short viscous time-scale. This causes the rapid (∼105-yr) decline in accretion rate on to the central star and in all disc-related emission shortward of 10 μm. We discuss the implications of this model for the detection of millimetre emission around weak-line T Tauri stars, and also point out the consequences of such a sudden draining for planet formation in the inner regions of circumstellar discs.

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Metadata

Authors
Clarke, C. J., Gendrin, A., & Sotomayor, M.
Venue
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press (OUP)
Published
2001-12-01
Volume
328
Issue
2
Pages
485-491
ISSN
  • 0035-8711 (ISSN-L)
  • 1365-2966
DOI
10.1046/j.1365-8711.2001.04891.x
OpenAlex
W1994517704
Cited by
621
References
24
FWCI
5.29
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The dispersal of circumstellar discs: the role of the ultraviolet switch. https://app.cochat.ai/papers/10.1046/j.1365-8711.2001.04891.x
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Clarke, C. J., Gendrin, A., & Sotomayor, M. (2001). The dispersal of circumstellar discs: the role of the ultraviolet switch. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1046/j.1365-8711.2001.04891.x

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