A Steeper than Linear Disk Mass-Stellar Mass Scaling Relation

Understand

The disk mass is among the most important input parameter for every planet formation model to determine the number and masses of the planets that can form.

• We present an ALMA 887micron survey of the disk population around objects from 2 to 0.03Msun in the nearby 2Myr-old Chamaeleon I star-forming region.
• We detect thermal dust emission from 66 out of 93 disks, spatially resolve 34 of them, and identify two disks with large dust cavities of about 45AU in radius.
• Assuming isothermal and optically thin emission, we convert the 887micron flux densities into dust disk masses, hereafter Mdust.