---
author:
- 'T.P.G. Wijnen, O.R. Pols, F.I. Pelupessy, S. Portegies Zwart'
bibliography:
- 'phdbib.bib'
date: 'Received ..../ Accepted ....'
title: 'Face-on accretion onto a protoplanetary disc'
---

[Using assumptions that represent the (dynamical) conditions in a typical GC, we investigate whether a low-mass star of $0.4\,{\mbox{$\mathrm{M}_{\odot}$}}$ surrounded by a protoplanetary disc can accrete a sufficient amount of enriched material to account for the observed abundances in ‘second generation’ GC stars. In particular, we focus on the gas loading rate onto the disc and star as well as on the lifetime and stability of the disc.]{} [We perform simulations at multiple resolutions with two different smoothed particle hydrodynamics codes and compare the results. Each code uses a different implementation of the artificial viscosity.]{} [We find that the gas loading rate is about a factor of two smaller than the rate based on geometric arguments, because the effective cross section of the disc is smaller than its surface area. Furthermore, the loading rate is consistent for both codes, irrespective of resolution. Although the disc gains mass in the high resolution runs, it loses angular momentum on a time scale of $10^4$ years. Two effects determine the loss of (specific) angular momentum 