Astrofísicas: Abundancias químicas

  • Publicación
    Accurate Metallicities for Very Metal-poor Stars from the Ca II Infrared Triplet

    The Ca II H and K lines are among the few features available to infer the metallicity of extremely metal-poor stars from medium-resolution spectroscopy...

  • Publicación
    BACCHUS Analysis of Weak Lines in APOGEE Spectra (BAWLAS)

    Elements with weak and blended spectral features in stellar spectra are challenging to measure and require specialized analysis methods to precisely measure...

  • Noticia
    Detectan grandes cantidades de oxígeno en la atmósfera de una estrella primitiva

    Científicos del Instituto de Astrofísica de Canarias (IAC), en colaboración con la Universidad de Cambridge y la Universidad de California en San Diego...

  • Publicación
    Open Cluster Chemical Homogeneity throughout the Milky Way

    The chemical homogeneity of surviving stellar clusters contains important clues about interstellar medium (ISM) mixing efficiency, star formation, and the...

  • Publicación
    Orbital Torus Imaging: Using Element Abundances to Map Orbits and Mass in the Milky Way

    Many approaches to galaxy dynamics assume that the gravitational potential is simple and the distribution function is time invariant. Under these assumptions...

  • Publicación
    Photoionized Herbig-Haro Objects in the Orion Nebula through Deep High Spectral Resolution Spectroscopy. II. HH 204

    We analyze the physical conditions, chemical composition, and other properties of the photoionized Herbig-Haro (HH) object HH 204 through Very Large Telescope...

  • Publicación
    Physical Parameters of SDSS Stars, the Nature of the SDSS `Ring around the Galaxy', and the SEGUE Project

    Although the Sloan Digital Sky Survey (SDSS) was primarily envisioned as a tool for understanding the nature of the `high redshift' universe, significant...

  • Noticia
    Posible evidencia de formación planetaria en la Nebulosa de Orión

    Una investigación internacional, dirigida por científicos del Instituto de Astrofísica de Canarias (IAC), ha mostrado la existencia de compuestos sólidos de...

  • Publicación
    SEGUE-2: Old Milky Way Stars Near and Far

    The Sloan Extension for Galactic Understanding and Exploration 2 (SEGUE-2) obtained 128,288 low-resolution spectra (R ~ 1800) of 118,958 unique stars in the...