Survey of Orion Disks with ALMA (SODA)

(Abridged) Surveys of protoplanetary disks in nearby star-forming regions (SFRs) have provided important information on their demographics, but due to sample sizes, they cannot be used study how disk properties vary with the environment. We conduct a survey unresolved millimeter continuum emission 873 identified by Spitzer L1641 and L1647 Orion A cloud. This is largest such yet, allowing us identify even weak trends median mass as function position cloud cluster membership. The detection rates masses are also compared those (<300 pc) SFRs. was observed ALMA at 225 GHz, rms 0.08 mJy/beam (1.5 M$_{\oplus}$). data were reduced imaged using an innovative parallel processing approach. detect 58% (502/873) disks. includes 20 dust >100 M$_{\oplus}$, two objects associated extended emission. infer full $2.2^{+0.2}_{-0.2}$ M$_{\oplus}$. In $2.1^{+0.2}_{-0.2}$ M$_{\oplus}$ $2.6^{+0.4}_{-0.5}$ respectively. distribution similar that low-mass SFRs ages 1-3 Myr. find only (dust) galactic longitude between YSO clusters sample, varying $\lesssim$ 50%. Age differences may explain these variations. Apart from this, essentially constant scales ~100 pc. suggests majority disks, different SFRs, formed initial evolve rates, assuming no external irradiation, loss $\sim 10^{-8}$ M$_{\odot}$/yr.