Fernandez-Trincado, Jose G.Jose G.Fernandez-TrincadoBeers, Timothy C.Timothy C.BeersMinniti, DanteDanteMinnitiCarigi, LeticiaLeticiaCarigiPlacco, Vinicius M.Vinicius M.PlaccoChun, Sang-HyunSang-HyunChunLane, Richard R.Richard R.LaneGeisler, DougDougGeislerVillanova, SandroSandroVillanovaSouza, Stefano O.Stefano O.SouzaBarbuy, BeatrizBeatrizBarbuyPerez-Villegas, AngelesAngelesPerez-VillegasChiappini, CristinaCristinaChiappiniQueiroz, Anna. B. A.Anna. B. A.QueirozTang, BaitianBaitianTangAlonso-Garcia, JavierJavierAlonso-GarciaPiatti, Andres E.Andres E.PiattiPalma, TaliTaliPalmaAlves-Brito, AlanAlanAlves-BritoBidin, Christian MoniChristian MoniBidinRoman-Lopes, AlexandreAlexandreRoman-LopesMunoz, Ricardo R.Ricardo R.MunozSingh, Harinder P.Harinder P.SinghKundu, RichaRichaKunduChaves-Velasquez, LeonardoLeonardoChaves-VelasquezRomero-Colmenares, MariaMariaRomero-ColmenaresLonga-Pena, PenelopePenelopeLonga-PenaSoto, MarioMarioSotoVieira, KatherineKatherineVieira2025-12-302025-12-3020211432-0746https://hdl.handle.net/20.500.12740/24123The central ('bulge') region of the Milky Way is teeming with a significant fraction of mildly metal-deficient stars with atmospheres that are strongly enriched in cyanogen ((CN)-C-12-N-14). Some of these objects, which are also known as nitrogen-enhanced stars, are hypothesised to be relics of the ancient assembly history of the Milky Way. Although the chemical similarity of nitrogen-enhanced stars to the unique chemical patterns observed in globular clusters has been observed, a direct connection between field stars and globular clusters has not yet been proven. In this work, we report on high-resolution, near-infrared spectroscopic observations of the bulge globular cluster NGC 6723, and the serendipitous discovery of a star, 2M18594405-3651518, located outside the cluster (near the tidal radius) but moving on a similar orbit, providing the first clear piece of evidence of a star that was very likely once a cluster member and has recently been ejected. Its nitrogen abundance ratio ([N/Fe] greater than or similar to +0.94) is well above the typical Galactic field-star levels, and it exhibits noticeable enrichment in the heavy s-process elements (Ce, Nd, and Yb), along with moderate carbon enrichment; all characteristics are known examples in globular clusters. This result suggests that some of the nitrogen-enhanced stars in the bulge likely originated from the tidal disruption of globular clusters.Acceso Abiertostars: abundancesstars: chemically peculiarglobular clusters: individual: NGC 6723techniques: spectroscopichttp://dx.doi.org/10.1051/0004-6361/202040255