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A chemical characterization of the Galactic Center is essential for understanding its formation and structural evolution. Trends of alpha-elements, such as Mg, Si, and Ca, serve as powerful diagnostic tools, offering insights into…

The Nuclear Stellar Disc (NSD) is a rotating, disc-like structure in the Galactic Center, believed to have a distinct star formation. However, its formation history and evolutionary links to other structures in the Galactic Center remain…

Astrophysics of Galaxies · Physics 2025-07-09 N. Ryde , G. Nandakumar , R. Albarracin , M. Schultheis , A. Rojas-Arriagada , M. Zoccali

The Milky Way nuclear star cluster (MW NSC) has been used as a template to understand the origin and evolution of galactic nuclei and the interaction of nuclear star clusters with supermassive black holes. It is the only nuclear star…

We report the first star formation history study of the Milky Way's nuclear star cluster (NSC) that includes observational constraints from a large sample of stellar metallicity measurements. These metallicity measurements were obtained…

Nuclear star clusters (NSCs) are massive star clusters found in the innermost region of most galaxies. While recent studies suggest that low-mass NSCs in dwarf galaxies form largely out of the merger of globular clusters and NSCs in massive…

Astrophysics of Galaxies · Physics 2024-03-26 Floor van Donkelaar , Lucio Mayer , Pedro R. Capelo , Tomas Tamfal , Thomas R. Quinn , Piero Madau

Due to its proximity, the Milky Way nuclear star cluster provides us with a wealth of data not available in other galactic nuclei. In particular, with adaptive optics, we can observe the detailed properties of individual stars, which can…

Chemical abundances of stars in the Milky Way disk are empirical tracers of its enrichment history. However, they capture joint-information that is valuable to disentangle. In this work, we seek to quantify how individual abundances evolve…

Astrophysics of Galaxies · Physics 2023-02-08 Bridget Ratcliffe , Melissa Ness

The Milky Way's nuclear stellar disc (NSD) and nuclear star cluster (NSC) are the main features of the Galactic centre. Nevertheless, their observation is hampered by the extreme source crowding and high extinction. Hence, their relation…

Astrophysics of Galaxies · Physics 2021-10-27 Francisco Nogueras-Lara , Rainer Schödel , Nadine Neumayer

We extend our model of chemical evolution that successfully account for the main observables in the solar neighborhood (Alibes, Labay & Canal 2001) to the whole Milky Way halo and disk. We assume an inside-out scenario for the assembling of…

Astrophysics · Physics 2007-05-23 Andreu Alibes , Javier Labay , Ramon Canal

It is debated whether the Milky Way bulge has the characteristics of a classical bulge sooner than those of a pseudobulge. Detailed abundance studies of bulge stars is a key to investigate the origin, history, and classification of the…

The physical processes driving chemical evolution in the Milky Way can be probed using the distribution of abundances in low-mass FGK type stars in space phase at different times. During their final stages of evolution stars experience…

Solar and Stellar Astrophysics · Physics 2020-01-15 Paula Jofre , Holly Jackson , Marcelo Tucci Maia

We report the first high resolution, detailed abundances of 21 elements for giants in the Galactic bulge/bar within $1^\circ$ of the Galactic plane, where high extinction has rendered such studies challenging. Our high S/N and…

The Milky Way nuclear star cluster (MWNSC) is located together with its surrounding nuclear stellar disc (MWNSD) in the Galactic centre and they dominate the gravitational potential within the inner 300\,pc. However, the formation and…

Astrophysics of Galaxies · Physics 2026-01-28 M. Schultheis , L. Serrano , B. Thorsbro , F. Nogueras-Lara , A. Feldmeier-Krause , G. Nandakumar , K. Fiteni , M. C. Sormani

The Milky Way's nuclear star cluster (NSC) is a unique laboratory to study the formation and evolution of dense stellar systems around a supermassive black hole. Previous work suggests that most stars in the NSC are old; however, the…

The formation and evolution of the Milky Way bulge is not yet well understood and its classification is ambiguous. Constraints can, however, be obtained by studying the abundances of key elements in bulge stars. The aim of this study is to…

Solar and Stellar Astrophysics · Physics 2009-11-13 Nils Ryde , Bengt Edvardsson , Bengt Gustafsson , Kjell Eriksson , Hans Ulrich Kaufl , Ralf Siebenmorgen , Alain Smette

Low- and intermediate-mass ($\rm 0.8~M_\odot < M < 8~M_\odot$) stars that evolve into planetary nebulae (PNe) play an important role in tracing and driving Galactic chemical evolution. Spectroscopy of PNe enables access to both the initial…

Solar and Stellar Astrophysics · Physics 2022-10-26 Catherine Manea , Harriet Dinerstein , N. C. Sterling , Greg Zeimann

We will discuss some highlights concerning the chemical evolution of our Galaxy, the Milky Way. First we will describe the main ingredients necessary to build a model for the chemical evolution of the Milky Way. Then we will illustrate some…

Astrophysics of Galaxies · Physics 2019-04-24 Francesca Matteucci , Emanuele Spitoni , Donatella Romano , Alvaro Rojas-Arriagada

Based on a simple, but fairly successful, model of the chemical evolution of the Milky Way disk, we study the evolution of the abundances of the elements He, C, N, O, Ne, Mg, Al, Si, S, Ar and Fe. We use metallicity dependent yields for…

Astrophysics · Physics 2007-05-23 J. L. Hou , N. Prantzos , S. Boissier

Globular Clusters (GCs) are natural laboratories where stellar and chemical evolution can be studied in detail. In addition, their chemical patterns and kinematics can tell us wich Galactic structure (Disk, Bulge, Halo or extragalactic) the…

Solar and Stellar Astrophysics · Physics 2018-01-10 A. Mura-Guzmán , S. Villanova , C. Muñoz , B. Tang

We present a detailed study of the composition of 20 M giants in the Galactic center with 15 of them confirmed to be in the Nuclear Star Cluster. As a control sample we have also observed 7 M giants in the Milky Way Disk with similar…

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