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

We introduce the Disk Substructures at High Angular Resolution Project(DSHARP), one of the initial Large Programs conducted with the Atacama LargeMillimeter/submillimeter Array (ALMA). The primary goal of DSHARP is to findand characterize substructures in the spatial distributions of solid particlesfor a sample of 20 nearby protoplanetary disks, using very high resolution(0.035 arcsec, or 5 au FWHM) observations of their 240 GHz (1.25 mm) continuumemission. These data provide a first homogeneous look at the small-scalefeatures in disks that are directly relevant to the planet formation process,quantifying their prevalence, morphologies, spatial scales, spacings, symmetry,and amplitudes, for targets with a variety of disk and stellar host properties.We find that these substructures are ubiquitous in this sample of large, brightdisks. They are most frequently manifested as concentric, narrow emission ringsand depleted gaps, although large-scale spiral patterns and small arc-shapedazimuthal asymmetries are also present in some cases. These substructures arefound at a wide range of disk radii (from a few au to more than 100 au), areusually compact ($<$10 au), and show a wide range of amplitudes (brightnesscontrasts). Here we discuss the motivation for the project, describe the surveydesign and the sample properties, detail the observations and data calibration,highlight some basic results, and provide a general overview of the keyconclusions that are presented in more detail in a series of accompanyingarticles. The DSHARP data -- including visibilities, images, calibrationscripts, and more -- are released for community use athttps://almascience.org/alma-data/lp/DSHARP.

The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview