# # Program information file # PROGRAM_ID 2024A991 PROGRAM_TITLE iSHELL Determination of Mass and Age of Stars with Protoplanetary Disks PROGRAM_INV1 Ellen Lee PROGRAM_INV2 PROGRAM_INV3 PROGRAM_INV4 PROGRAM_INV5 PROGRAM_SCICAT stellar PROGRAM_ABSTRACT_BEG We plan to use the K2 mode of iSHELL to observe metal (esp. Al, Ca, Na, and Fe) and the CO absorption lines at high resolution to model the physical properties of young stars. These stars have disks that will be mapped at very high spatial resolution with Subaru/SCExAO. PROGRAM_ABSTRACT_END