Relationships between accretion luminosity and line luminosity for the several diagnostics as labelled in each panel. The Lupus YSOs are represented as black dots. The Paβ, Paγ, and Brγ data available in literature for YSOs in Taurus (Muzerolle et al. 1998; Calvet et al. 2000, 2004), ρ-Oph and Chamaeleon (Natta et al. 2004), and the σ-Ori cluster (Rigliaco et al. 2012) are overlaid as open circles, ×-symbols, and star symbols, respectively.
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