Astrofísicas: Estructura 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...
  • Publicación
    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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    Charting the Galactic Acceleration Field. II. A Global Mass Model of the Milky Way from the STREAMFINDER Atlas of Stellar Streams Detected in Gaia DR3
    We present an atlas and follow-up spectroscopic observations of 87 thin stream-like structures detected with the STREAMFINDER algorithm in Gaia DR3, of which 28...
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    Dwarf Galaxies with Central Cores in Modified Newtonian Dynamics Gravity
    Some dwarf galaxies are within the Mondian regime at all radii, i.e., the gravitational acceleration provided by the observed baryons is always below the...
  • Publicación
    Evolution of the Size–Mass Relation of Star-forming Galaxies Since z = 5.5 Revealed by CEERS
    We combine deep imaging data from the CEERS early release JWST survey and Hubble Space Telescope imaging from CANDELS to examine the size–mass relation of star...
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    Exploring the Galactic Warp through Asymmetries in the Kinematics of the Galactic Disk
    Previous analyses of large databases of Milky Way stars have revealed the stellar disk of our Galaxy to be warped and that this imparts a strong signature on...
  • Publicación
    First Look at z > 1 Bars in the Rest-frame Near-infrared with JWST Early CEERS Imaging
    Stellar bars are key drivers of secular evolution in galaxies and can be effectively studied using rest-frame near-infrared (NIR) images, which trace the...
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    Flares, Warps, Truncations, and Satellite: The Ultra-thin Galaxy UGC 11859
    The structure of the outskirts of galaxies provides valuable information about their past and evolution. Due to their projected orientation, edge-on isolated...
  • Publicación
    Galaxies Going Bananas: Inferring the 3D Geometry of High-redshift Galaxies with JWST-CEERS
    The 3D geometries of high-redshift galaxies remain poorly understood. We build a differentiable Bayesian model and use Hamiltonian Monte Carlo to efficiently...