Astrofísicas: Contenido estelar de las galaxias

  • Publicación
    A Duality in the Origin of Bulges and Spheroidal Galaxies
    Studying the resolved stellar populations of the different structural components that build massive galaxies directly unveils their assembly history. We aim at...
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    A Tale of Two Disks: Mapping the Milky Way with the Final Data Release of APOGEE
    We present new maps of the Milky Way disk showing the distribution of metallicity ([Fe/H]), α-element abundances ([Mg/Fe]), and stellar age, using a sample of...
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    An Intermediate-age Alpha-rich Galactic Population in K2
    We explore the relationships between the chemistry, ages, and locations of stars in the Galaxy using asteroseismic data from the K2 mission and spectroscopic...
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    J-PLUS: Beyond Spectroscopy. III. Stellar Parameters and Elemental-abundance Ratios for Five Million Stars from DR3
    We present a catalog of stellar parameters (effective temperature T eff, surface gravity , age, and metallicity [Fe/H]) and elemental-abundance ratios ([C/Fe],...
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    NGDEEP Epoch 1: Spatially Resolved Hα Observations of Disk and Bulge Growth in Star-forming Galaxies at z ∼ 0.6–2.2 from JWST NIRISS Slitless Spectroscopy
    We study the Hα equivalent width (EW(Hα)) maps of 19 galaxies at 0.6 < z < 2.2 in the Hubble Ultra Deep Field using NIRISS slitless spectroscopy as part of the...
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    NGDEEP: The Star Formation and Ionization Properties of Galaxies at 1.7 &lt; z &lt; 3.4
    We use JWST/NIRISS slitless spectroscopy from the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey to investigate the physical condition of...
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    Recovering Age-Metallicity Distributions from Integrated Spectra: Validation with MUSE Data of a Nearby Nuclear Star Cluster
    Current instruments and spectral analysis programs are now able to decompose the integrated spectrum of a stellar system into distributions of ages and...
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    Star Formation Histories of Ultra-faint Dwarf Galaxies: Environmental Differences between Magellanic and Non-Magellanic Satellites?
    We present the color-magnitude diagrams and star formation histories (SFHs) of seven ultra-faint dwarf galaxies: Horologium 1, Hydra 2, Phoenix 2, Reticulum 2...
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    The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way
    We present stellar age determinations for 4661 red giant branch stars in the APO-K2 catalog, derived using mass estimates from K2 asteroseismology from the K2...