English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The disk fraction, the percentage of stars with disks in a young cluster, iswidely used to investigate the lifetime of the protoplanetary disk, which canimpose an important constraint on the planet formation mechanism. Therelationship between the decay timescale of the disk fraction and the massdissipation timescale of an individual disk, however, remains unclear. Here weinvestigate the effect of the disk mass function (DMF) on the evolution of thedisk fraction. We show that the time variation in the disk fraction depends onthe spread of the DMF and the detection threshold of the disk. In general, thedisk fraction decreases more slowly than the disk mass if a typical initial DMFand a detection threshold are assumed. We find that, if the disk mass decreasesexponentially, {the mass dissipation timescale of the disk} can be as short as$1\,{\rm Myr}$ even when the disk fraction decreases with the time constant of${\sim}2.5\,{\rm Myr}$. The decay timescale of the disk fraction can be anuseful parameter to investigate the disk lifetime, but the difference betweenthe mass dissipation of an individual disk and the decrease in the diskfraction should be properly appreciated to estimate the timescale of the diskmass dissipation.

Impact of the initial disk mass function on the disk fraction