The external photoevaporation of structured protoplanetary disks

• DOI: 10.48550/arxiv.2310.20214
• Publication Date: 2023-01-01
• Authors: Matías Gárate; Paola Pinilla; Thomas J. Haworth; Stefano Facchini
• Keywords: Photoevaporation; Submillimeter Array

The dust in planet-forming disks evolve rapidly through growth and radial drift, external photoevaporation also contributes to this evolution massive star-forming regions. We test whether the presence of substructures can explain survival component observed millimeter continuum emission protoplanetary located within characterize content removed by photoevaporative winds. For this, we performed hydrodynamical simulations subject irradiation fields $F_{UV} = 10^2$, $10^3$, $10^4\, G_0$, with different trap locations. used FRIED grid derive mass loss rate for each field disk properties, then measure over time. simulation estimate at $\lambda 1.3\, \textrm{mm}$ along radii encompassing $90\%$ flux, size distribution entrained winds, resulting far-ultraviolet (FUV) cross section. Our show that traps extend lifetime a few millionyears if FUV is \lesssim 10^3 but only are inside truncation radius. quickly disperse strong ($10^4\, G_0$) or outside do find however, grains winds may result an absorption section $\sigma \approx 10^{-22}\, \textrm{cm}^2$ early times ($<$0.1 Myr), which enough trigger self-shielding effect reduces total rate, slow down dispersal negative feedback loop process.