# Protoplanetary disc population synthesis I. Constraining disc parameters to reproduce disc observations

**Authors:** Jose L. Gomez, Octavio M. Guilera, Marcelo M. Miller Bertolami, Elisa Castro-Martínez, María Paula Ronco  
**arXiv:** [2510.06978](https://arxiv.org/abs/2510.06978)  
**Date:** 2025-10-08  
**Summary page:** https://www.summarizepaper.com/en/paper/2510.06978v1/

## Key points

- Study focuses on protoplanetary discs dynamics crucial for planet formation
- Importance of stellar mass in determining disc lifetimes and accretion rates
- Low-mass stars have longer-lived discs, aiding planet formation through solid accretion processes
- Aim to identify optimal parameters for disc evolution model to replicate observed disc fractions and accretion rates
- Results highlight need for increased viscosity with stellar mass and role of external photoevaporation in generating low-mass discs with high accretion rates
- Incorporating time-dependent star formation rate and stellar mass cut-off helps explain distance-dependent biases in observed disc fractions

## Summary

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The study "Protoplanetary disc population synthesis I. Constraining disc parameters to reproduce disc observations" by Gomez et al. delves into the dynamics of protoplanetary discs, which are crucial for planet formation. Recent research highlights the importance of stellar mass in determining disc lifetimes and accretion rates. Low-mass stars tend to have longer-lived discs, facilitating planet formation through solid accretion processes. The study aims to identify optimal parameters for a disc evolution model that can accurately replicate observed disc fractions and accretion rates in young stellar populations. A comprehensive population synthesis approach was used, exploring different dependencies of the viscosity parameter on stellar mass. The results reveal key insights into protoplanetary disc dynamics, including the need for an increase in viscosity with stellar mass and the significance of external photoevaporation in generating low-mass discs with high accretion rates. Additionally, incorporating a time-dependent star formation rate and a stellar mass cut-off helps explain distance-dependent biases seen in observed disc fractions across regions. Overall, this study sheds light on the complex interplay between intrinsic stellar characteristics and external environmental influences in shaping protoplanetary discs' properties and their role in planet formation processes within our universe.