CAPOS: The bulge Cluster APOgee Survey VIII. Final ASPCAP results for all clusters
Doug Geisler, Cesar Mu\~noz, Sandro Villanova, Roger E. Cohen, Dante Minniti, Antonela Monachesi, Steven R. Majewski, Andrea Kunder, Beatriz Barbuy, Katia Cunha, Verne Smith, Carolina Montecinos, Wisthon Haro Moya, Nicolas Barrera, Matias Bla\~na

TL;DR
This paper presents comprehensive ASPCAP-based chemical and kinematic analysis of all bulge globular clusters in the CAPOS survey, revealing their metallicity distribution, elemental abundances, and chemodynamical classifications.
Contribution
It provides the final homogeneous ASPCAP parameters for 18 bulge globular clusters, introduces a new chemodynamical classification scheme, and updates the metallicity distribution distinguishing in and ex situ clusters.
Findings
Bimodal metallicity distribution with peaks at -0.45 and -1.1.
No significant internal metallicity variation within clusters.
Small difference in [Si/Fe] between in and ex situ clusters.
Abstract
Bulge globular clusters(BGCs) are exceptional tracers of the formation and chemodynamical evolution of this oldest Galactic component. However, until now, observational difficulties have prevented us from taking full advantage of these powerful Galactic archeological tools. CAPOS, the bulge Cluster APOgee Survey, addresses this key topic by observing a large number of BGCs, most of which have been poorly studied. We aim to obtain accurate mean values for metallicity,[alpha/Fe],and radial velocity, as well as abundances for 11 other elements. We present final parameters based on ASPCAP for all 18 CAPOS BGCs. We carry out a stringent membership selection, finding 303 with SNR>70 and 125 with lower SNR. We reinforced the finding that stars with high [N/Fe] abundances show higher [Fe/H] than their lower [N/Fe] counterparts. Mg,Ca and global alpha abundances show similar trends, while Si is…
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