Spectra of ¹²CO, ¹³CO, and HCO⁺ toward LkHα 358. Top: ¹²CO from the interferometric measurement of Schaefer et al. (2009). The blue curve is the fitted profile based on the disk analysis made in the uv plane. The red curve uses the same disk parameters, except for the outer radius which is 250 au instead of 170 au. Bottom: ¹³CO(2−1) spectrum (histogram) and HCO⁺(3−2) (filled histogram). The green curve is the tentative fit of a disk component from Guilloteau et al. (2013).