# M54 + SAGITTARIUS = ω CENTAURI

@article{Carretta2010M54S,
title={M54 + SAGITTARIUS = $\omega$ CENTAURI},
author={Eugenio Carretta and A. Bragaglia and R. G. Gratton and Sara Lucatello and Michele Bellazzini and G. Catanzaro and Francesco Leone and Yazan Momany and Giampaolo Piotto and Valentina D’Orazi},
journal={The Astrophysical Journal Letters},
year={2010},
volume={714},
pages={L7 - L11}
}
• Published 9 February 2010
• Physics
• The Astrophysical Journal Letters
We derive homogeneous abundances of Fe, O, Na, and α-elements from high-resolution FLAMES spectra for 76 red giant stars in NGC 6715 (M54) and for 25 red giants in the surrounding nucleus of the Sagittarius (Sgr) dwarf galaxy. Our main findings are the following. (1) We confirm that M54 shows intrinsic metallicity dispersion, ∼0.19 dex rms. (2) When the stars of the Sgr nucleus are included, the metallicity distribution strongly resembles that in ω Cen; the relative contribution of the most…
111 Citations

### Detailed abundances of a large sample of giant stars in M 54 and in the Sagittarius nucleus

• Physics
• 2010
Homogeneous abundances of light elements, α-elements, and Fe-group elements from high-resolution FLAMES spectra are presented for 76 red giant stars in NGC 6715 (M 54), a massive globular cluster

### Terzan 8: a Sagittarius-flavoured globular cluster

• Physics
• 2014
Massive globular clusters (GCs) contain at least two generations of stars with slightly different ages and clearly distinct light element abundances. The Na-O anticorrelation is the best studied

### Chemical abundances in the nucleus of the Sagittarius dwarf spheroidal galaxy

• Physics
• 2017
We present Iron, Magnesium, Calcium, and Titanium abundances for 235 stars in the central region of the Sagittarius dwarf spheroidal galaxy (within 9.0 arcmin ~70 pc from the center) from

### APOGEE Chemical Abundances of the Sagittarius Dwarf Galaxy

• Physics
• 2017
The Apache Point Observatory Galactic Evolution Experiment provides the opportunity of measuring elemental abundances for C, N, O, Na, Mg, Al, Si, P, K, Ca, V, Cr, Mn, Fe, Co, and Ni in vast numbers

### The vertical Na–O relation in the bulge globular cluster NGC 6553

• Physics
Monthly Notices of the Royal Astronomical Society
• 2020
In this article, we present a detailed chemical analysis of seven red giant members of NGC 6553 using high-resolution spectroscopy from VLT FLAMES. We obtained the stellar parameters (Teff, Log(g),

### Chemical abundances in bright giants of the globular cluster M62 (NGC 6266)

• Physics
• 2014
With the exception of Terzan 5, all the Galactic globular clusters that possess significant metallicity spreads, such as ω Cen and M22, are preferentially the more luminous clusters with extended

### A Deep View into the Nucleus of the Sagittarius Dwarf Spheroidal Galaxy with MUSE. I. Data and Stellar Population Characterization

• Physics
The Astrophysical Journal
• 2019
The center of the Sagittarius dwarf spheroidal galaxy (Sgr dSph) hosts a nuclear star cluster (NSC), M54, which is the only galaxy nucleus that can be resolved into individual stars at optical

### The Most Metal-poor Stars in Omega Centauri (NGC 5139)

• Physics
The Astronomical Journal
• 2020
The most massive and complex globular clusters in the Galaxy are thought to have originated as the nuclear cores of now tidally disrupted dwarf galaxies, but the connection between globular clusters

### A CHEMICAL TROMPE-L’ŒIL: NO IRON SPREAD IN THE GLOBULAR CLUSTER M22

• Physics
• 2015
We present the analysis of high-resolution spectra obtained with UVES and UVES-FLAMES at the Very Large Telescope of 17 giants in the globular cluster (GC) M22, a stellar system suspected to have an

### The peculiar Na-O anticorrelation of the bulge globular cluster NGC 6440

• Physics
• 2017
Context. Galactic globular clusters (GCs) are essential tools for understanding the earliest epoch of the Milky Way, since they are among the oldest objects in the Universe and can be used to trace

## References

SHOWING 1-10 OF 41 REFERENCES

### Elemental Abundances in Five Stars in M54, A Globular Cluster Associated with the Sagittarius Galaxy

• Physics
• 1999
Chemical abundances in five stars in M54, a globular cluster associated with the Sagittarius dwarf galaxy, have been determined using high-resolution echelle spectra. We find the cluster to have

### THE NUCLEUS OF THE SAGITTARIUS DSPH GALAXY AND M54: A WINDOW ON THE PROCESS OF GALAXY NUCLEATION

• Physics
• 2008
We present the results of a thorough study of the nucleus of the Sgr dwarf spheroidal galaxy (Sgr dSph) and of the bright globular cluster M54 (NGC 6715) that resides within the same nucleus (Sgr,N).

### Na-O anticorrelation and HB. VII. The chemical composition of first and second-generation stars in 1

• Physics
• 2009
We present abundances of Fe, Na, and O for 1409 red giant stars in 15 galactic globular clusters (GCs), derived from the homogeneous analysis of high-resolution FLAMES/GIRAFFE spectra. Combining the

### Na-O anticorrelation and HB. VIII. Proton-capture elements and metallicities in 17 globular clusters

• Physics
• 2009
We present homogeneous abundance determinations for iron and some of the elements involved in the proton-capture reactions (O, Na, Mg, Al, and Si) for 202 red giants in 17 Galactic globular clusters

### The O-Na and Mg-Al anticorrelations in turn-off and early subgiants in globular clusters

• Physics
• 2001
High dispersion spectra (R > 40 000) for a quite large number of stars at the main sequence turn-o and at the base of the giant branch in NGC 6397 and NGC 6752 were obtained with the UVES on Kueyen

### Abundances in Red Giant Stars of NGC 2808 and Correlations between Chemical Anomalies and Global Parameters in Globular Clusters

We present the abundance analysis of stars from the tip of the red giant branch (RGB) to below the RGB bump in the globular cluster NGC 2808 based on high-resolution echelle spectra. We derive

### Origin of abundance inhomogeneity in globular clusters

• Physics
• 2007
We numerically investigate abundance properties of the Galactic globular clusters (GCs) by adopting a new “external pollution” scenario. In this framework, GCs are assumed to originate in forming

### The exotic chemical composition of the sagittarius dwarf spheroidal galaxy

• Physics
• 2007
Context. The Sagittarius dwarf spheroidal galaxy is the nearest neighbor of the Milky Way. Moving along a short period quasi-polar orbit within the Halo, it is being destroyed by the tidal

### A double stellar generation in the globular cluster NGC 6656 (M 22): Two stellar groups with different iron and s-process element abundances

• Physics
• 2009
We present a chemical abundance analysis based on high resolution UVES spectra of seventeen bright giant stars in the Globular Cluster (GC) M 22. We obtained an average iron abundance of [Fe/H] =

### A Near-Infrared Spectroscopic Screening of the Red Giant Populations in ω Centauri

• Physics
• 2003
Near-infrared spectra of 21 giants in ω Cen spanning the whole range of metallicities observed in this cluster are presented. This work is part of a coordinated photometric and spectroscopic campaign