Astrofísicas: Medio intergaláctico

  • Publicación
    (Re)Solving reionization with Lyα: how bright Lyα Emitters account for the z ≍ 2-8 cosmic ionizing background
    The cosmic ionizing emissivity from star-forming galaxies has long been anchored to UV luminosity functions. Here, we introduce an emissivity framework based on...
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    A Dust Lane Leading the Galactic Bar at Negative Galactic Longitudes
    Comparing the different wavelengths of the DIRBE integrated surface brightness maps at positive and negative Galactic longitudes on the plane near the Galactic...
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    A Headless Tadpole Galaxy: The High Gas-phase Metallicity of the Ultra-diffuse Galaxy UGC 2162
    The cosmological numerical simulations tell us that accretion of external metal-poor gas drives star formation (SF) in galaxy disks. One the best pieces of...
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    A lower bound on intergalactic magnetic fields from time variability of 1ES 0229+200 from MAGIC and Fermi/LAT observations
    Context. Extended and delayed emission around distant TeV sources induced by the effects of propagation of γ ray s through the intergalactic medium can be used...
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    A measurement of galaxy halo mass from the surrounding H I Lyα absorption
    We measure the dark matter halo masses of ≈ 2.36 UV colour-selected star-forming galaxies by matching the observed median H I Lyα absorption around them, as...
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    Absorption signatures of warm-hot gas at low redshift: broad H I Lyα absorbers
    We investigate the physical state of H I absorbing gas at low redshift (z = 0.25) using a subset of cosmological, hydrodynamic simulations from the...
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    Absorption signatures of warm-hot gas at low redshift: O VI
    We investigate the origin and physical properties of O VI absorbers at low redshift (z= 0.25) using a subset of cosmological, hydrodynamical simulations from...
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    Bar-driven injection of intergalactic matter into galactic halos
    Aims:The non-conservative gravitational potential of barred galaxies, or of any other non-axisymmetric structure, produces a loss of energy in infalling...
  • Publicación
    Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
    We present an implementation of stellar evolution and chemical feedback for smoothed particle hydrodynamics simulations. We consider the timed release of...