The Ital-FLAMES survey of the Sagittarius dwarf spheroidal galaxy

2005/06/30 by L. Monaco, M. Bellazzini, P. Bonifacio +5 · 154 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Dwarf galaxy #Dwarf spheroidal galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Giant star #Interacting galaxy #Metallicity #Milky Way #Physics #Sagittarius #Stars #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1051/0004-6361:20053333

published in Astronomy and Astrophysics 441(1), 141-151 (EDP Sciences) · 16 pages, 10 figures, 6 tables. Accepted for publication in A&A. Minor changes in the text

openalex publication_date 2005/09/13 · arxiv created 2005/10/02 · arxiv updated 2016/08/30 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/31

Abstract

We present iron and α element (Mg, Ca, Ti) abundances for a sample of 15 Red Giant Branch stars belonging to the main body of the Sagittarius dwarf Spheroidal galaxy. Abundances have been obtained from spectra collected using the high resolution spectrograph FLAMES-UVES mounted at the VLT. Stars of our sample have a mean metallicity of [ Fe/H with a metal-poor tail extending to [ Fe/H. The α element abundance ratios are slightly subsolar for metallicities higher than , suggesting a slow star formation rate. The [ α/Fe] of stars having are compatible to what observed in Milky Way stars of comparable metallicity.

Cited by

• Star-Formation Histories, Abundances, and Kinematics of Dwarf Galaxies in the Local Group
• De Re Metallica: The cosmic chemical evolution of galaxies
• A chemical close-up of the main body of the Sagittarius dwarf galaxy
• Globular cluster abundance patterns inherited from giant molecular clouds
• The Field of Streams: Sagittarius and Its Siblings
• A SPECTROSCOPIC CONFIRMATION OF THE BOOTES II DWARF SPHEROIDAL
• Detection of a population gradient in the Sagittarius stream
• Outer structure of the Galactic warp and flare: explaining the Canis Major over-density
• THE NUCLEUS OF THE SAGITTARIUS DSPH GALAXY AND M54: A WINDOW ON THE PROCESS OF GALAXY NUCLEATION
• The chemical evolution of dwarf spheroidal galaxies: dissecting the inner regions and their stellar populations
• Basic physical parameters of a selected sample of evolved stars
• Chemical compositions of stars in two stellar streams from the Galactic thick disk
• The exotic chemical composition of the Sagittarius dwarf spheroidal galaxy
• The α-element knee of the Sagittarius stream
• THE CHEMICAL COMPOSITION OF RED GIANT STARS IN FOUR INTERMEDIATE-AGE CLUSTERS OF THE LARGE MAGELLANIC CLOUD
• High-resolution spectroscopy of RGB stars in the Sagittariusstreams
• THE NORTHERN WRAPS OF THE SAGITTARIUS STREAM AS TRACED BY RED CLUMP STARS: DISTANCES, INTRINSIC WIDTHS, AND STELLAR DENSITIES
• Sulphur abundances from the S i near-infrared triplet at 1045 nm
• Complexity in small‐scale dwarf spheroidal galaxies
• Detailed Chemical Composition and Orbit of the Newly Discovered Globular Cluster FSR 1758: Implications for the Accretion of the Sequoia Dwarf Galaxy onto the Milky Way*
• The DECam MAGIC Survey: A Wide-field Photometric Metallicity Study of the Sculptor Dwarf Spheroidal Galaxy
• A spectroscopic study of the globular cluster M28 (NGC 6626)
• Probing the Nature of the G1 Clump Stellar Overdensity in the Outskirts of M31

Related

• Chemical abundances of RGB-Tip stars in the Sagittarius dwarf Spheroidal galaxy
• The Complex Chemical Abundances and Evolution of the Sagittarius Dwarf Spheroidal Galaxy
• The Composition of the Sagittarius Dwarf Spheroidal Galaxy and Implications for Nucleosynthesis and Chemical Evolution
• A chemical close-up of the main body of the Sagittarius dwarf galaxy
• MULTI-ELEMENT ABUNDANCE MEASUREMENTS FROM MEDIUM-RESOLUTION SPECTRA. IV. ALPHA ELEMENT DISTRIBUTIONS IN MILKY WAY SATELLITE GALAXIES