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arXiv · 2110.06594

Formation of ring-like structures in flared α-discs with X-ray/FUV photoevaporation

Juan C. Vallejo·Ana Inés Gómez de castro
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Abstract

Protoplanetary discs are complex dynamical systems where several processes may lead to the formation of ring-like structures and planets. These discs are flared following a profile where the vertical scale height increases with radius. In this work, we investigate the role of this disc flaring geometry on the formation of rings and holes. We combine a flattening law change with X-ray and FUV photoevaporative winds. We have used a semi-analytical 1D viscous α approach, presenting the evolution of the disc mass and mass rate in a grid of representative systems. Our results show that changing the profile of the flared disc may favour the formation of ring-like features resembling those observed in real systems at the proper evolutionary times, with proper disc masses and accretion rate values. However, these features seem to be short-lived and further enhancements are still needed for better matching all the features seen in real systems.

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Juan C. Vallejo, Ana Inés Gómez de castro. 2021-10-13. Formation of ring-like structures in flared α-discs with X-ray/FUV photoevaporation. https://doi.org/10.1093/mnras%2Fstab2581

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