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

Using resistive magnetohydrodynamics simulation, we investigate circumstellardisk formation in a strongly magnetized cloud. As the initial state, anisolated cloud core embedded in a low-density interstellar medium with auniform magnetic field is adopted. The cloud evolution is calculated untilalmost all gas inside the initial cloud falls onto either the circumstellardisk or a protostar, and a part of the gas is ejected into the interstellarmedium by the protostellar outflow driven by the circumstellar disk. In theearly main accretion phase, the disk size is limited to \sim 10 AU because theangular momentum of the circumstellar disk is effectively transferred by bothmagnetic braking and the protostellar outflow. In the later main accretionphase, however, the circumstellar disk grows rapidly and exceeds 100 AU by theend of the main accretion phase. This rapid growth of the circumstellar disk iscaused by the depletion of the infalling envelope, while magnetic braking iseffective when the infalling envelope is more massive than the circumstellardisk. The infalling envelope cannot brake the circumstellar disk when thelatter is more massive than the former. In addition, the protostellar outflowweakens and disappears in the later main accretion phase, because the outflowis powered by gas accretion onto the circumstellar disk. Although thecircumstellar disk formed in a magnetized cloud is considerably smaller thanthat in an unmagnetized cloud, a circumstellar disk exceeding 100 AU can formeven in a strongly magnetized cloud.

Effect of Magnetic Braking on the Circumstellar Disk Formation in a Strongly Magnetized Cloud