Open Access

Fig. 4.

image

Extremely massive ~1000 au-scale cores #3 and #6 and their parental MDCs in W43-MM1 (circles; Louvet et al. 2014; Motte et al. 2018b), compared to cores and MDCs of references studies (triangles; Bontemps et al. 2010; Tan et al. 2013; Wang et al. 2014; Tigé et al. 2017; Louvet et al. 2017). In these studies, masses are calculated from millimeter continuum with the same assumptions: dust temperature evaluated from large-scale spectral energy distribution fit (except for Wang et al. 2014 which use NH3), gas-to-dust ratio of 100 (except for Tan et al. 2013 which use 141), and an opacity index of 1.5. Cores #3 and #6 lie well above the empirical massive star formation threshold proposed by Kauffmann & Pillai (2010; black line).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.