APOGEE discovery of a chemically atypical star disrupted from NGC 6723 and captured by the Milky Way bulge

The central (`bulge') region of the Milky Way is teeming with a significant fraction mildly metal-deficient stars atmospheres that are strongly enriched in cyanogen ($^{12}$C$^{14}$N). Some these objects, which also known as nitrogen-enhanced stars, hypothesised to be relics ancient assembly history Way. Although chemical similarity unique patterns observed globular clusters has been observed, direct connection between field and not yet proven. In this work, we report on high-resolution, near-infrared spectroscopic observations bulge cluster NGC 6723, serendipitous discovery star, 2M18594405$-$3651518, located outside (near tidal radius) but moving similar orbit, providing first clear piece evidence star was very likely once member recently ejected. Its nitrogen abundance ratio ([N/Fe]$\gtrsim + 0.94$) well above typical Galactic field-star levels, it exhibits noticeable enrichment heavy $s$-process elements (Ce, Nd, Yb), along moderate carbon enrichment; all characteristics examples clusters. This result suggests some originated from disruption