Fig. 1
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HR-diagram of the Herbig star sample of S22, and the compiled IMTT sample in this work. The effective temperatures and luminosities are taken from Vioque et al. (2018) and Valegård et al. (2021) for the Herbig stars and IMTT stars, respectively. Pre-main sequence tracks of different intermediate-mass stars and an isochrone of 2.5 Myr as the dashed line are taken from Marigo et al. (2017).
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