IRTF Data Archive Program Information

# # Program information file # PROGRAM_ID 2023B005 PROGRAM_TITLE A Survey for Members of the 32 Ori Association PROGRAM_INV1 Kevin Luhman PROGRAM_INV2 PROGRAM_INV3 PROGRAM_INV4 PROGRAM_INV5 PROGRAM_SCICAT stellar PROGRAM_ABSTRACT_BEG The 32 Ori association is among the nearest young associations in the solar neighborhood [~20 Myr, ~100 pc], making it valuable for studies of star and planet formation. A recent study identified candidate members of 32 Ori using astrometry and photometry from Gaia DR3, arriving at a total of 169 candidate members [more than quadruple the number of previously known members]. Among those candidates, 14 lack the spectroscopy needed for measuring spectral types and verifying youth and 51 lack the measurements of RVs needed for confirming membership via UVW velocities. We propose to use SpeX to perform spectral classifications on the first sample of 14 candidates and we propose to use iSHELL to measure RVs for the second sample of 51 candidates. Through these observations, we will complete the process of assessing membership for all of the candidate members of 32 Ori that have been identified with Gaia. PROGRAM_ABSTRACT_END