T Tauri stars are pre-main-sequence stars still contracting toward hydrogen fusion.
- True - they are young stellar objects
- False - they are evolved red giants
- False - they are white dwarfs
- True - but only in binary systems
Answer: True - they are young stellar objects
T Tauri stars (<10 Myr) are variable, accreting protostars en route to main sequence, often surrounded by protoplanetary disks.