Accretion process 1 Accretion, accretion disks 1 Accretion: accretion disks 1 Herbig Ae/Be 1 Herbig ae/be 1 Infrared devices 1 Morphology 1 Photometry 1 Star: individual: CR cha 1 Star: variable: T tauri 1 Stars 1 Stars: individual: CR Cha 1 Stars: individual: proxima Centauri 1 Stars: pre-main sequence 1 Stars: variables 1 Stars: variables: T Tauri T Tauri stars 1 Time-scales 1