Elizabeth Cornwall Tilley

Elizabeth Roberts Cornwall Tilley (née Elizabeth Roberts Cornwall; 1914–1996) was an American astronomer known for her spectrographic study of the multiple star system 59 Serpentis. She earned her Ph.D. in astronomy from the University of Michigan in 1943. Her doctoral thesis, "A Spectrographic Study of the Triple System in 59 d Serpentis," was supervised by astronomer Dean Benjamin McLaughlin and became a foundational work in understanding this complex stellar system and continues to be cited in astronomical research.