Free Access

Fig. 4

thumbnail

H-R diagram of the sample stars. Evolutionary tracks and isochrones are taken from Brott et al. (2011a) for an initial rotation rate of 180 km s-1. Evolutionary tracks are annotated in solar masses, and isochrones in Myr from 1 to 7 Myr. Green circles indicate field stars, while squares indicate stars in NGC 346. Blue squares show normal luminosity class V stars, while black squares show Vz-class objects (cf. Sect. 5.2.2). Red squares show the position of the two stars that rotate faster than 300 km s-1.

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.