Tracing Multiple Stellar Populations in Bulge Globular Clusters: A Case Study for NGC 6316

Although approximately two-thirds of the Milky Way's globular clusters are believed to be part of the bulge and disk, the bulge has received less attention than the halo and disk regions. This study reports the C, N, and O abundances of the bulge globular cluster NGC 6316 using optical and near-infrared (NIR, H-band) spectroscopic data of cluster member stars, as CNO abundances are key to distinguishing multiple stellar populations (1G and 2G). Additionally, we will provide a critical comparison to test and validate the elemental abundances reported using the APOGEE/Bulge Cluster APOGEE Survey (CAPOS) H-band NIR datasets. These datasets were processed using the APOGEE Stellar Parameters and Chemical Abundance Pipeline (ASPCAP) and the Brussels Automatic Code for Characterizing High-Accuracy Spectra (BACCHUS) for elemental abundances from the APOGEE H-band spectra of cluster member stars. The [N/Fe] > +0.7 criterion used by the CAPOS team to separate multiple populations will also be tested and discussed.