Probing the distinct chemical history of the Milky Way halo and old thick disk through HESP-GOMPA survey Pallavi Saraf, Thirupathi Sivarani and Avrajit Bandyopadhyay EPJ Web Conf., 297 (2024) 02009 Published online: 24 June 2024 DOI: 10.1051/epjconf/202429702009