TY - GEN T1 - Hierarchical formation of Westerlund 1: a collapsing cluster with no primordial mass segregation? T2 - arXiv PY - 2017/08/14 AU - Gennaro M AU - Goodwin SP AU - Parker RJ AU - Allison RJ AU - Brandner W ED - DO - DOI: 10.48550/arxiv.1708.04161 Y2 - 2025/11/24 ER -