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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The formation and evolution of disks early in the protostellar phase is anarea of study in which the ngVLA is poised to make significant breakthroughs.The high-sensitivity and resolution at wavelengths of 3~mm and longer willenable forming disks to be examined with unprecedented detail. The need toobserve dust emission at wavelengths of 3~mm and longer is motivated by thefact that dust emission at these wavelengths is more likely to be opticallythin, which is essential to understanding the structure of these disks. Weexplore the feasibility of detecting and resolving protostellar disks with avariety of radii, masses, and distances, out to distances as large as 1.5~kpcusing radiative transfer models and simulations with the proposed ngVLAconfiguration. We also examine the potential for the ngVLA to enable studies ofgrain growth and radial migration of dust particles early in the protostellarphase with the broad multi-wavelength coverage. Studies of grain growth willrequire wavelength coverage extending at least to $\sim$4~cm to characterizeand quantify the location and intensity of free-free emission, which isexpected to be generated at $<$10 AU scales.

Science with an ngVLA: Exploring Protostellar Disk Formation with the ngVLA