Astrofísicas: Galaxias

  • Publicación
    Euclid preparation: LXXIX. Using mock low surface brightness dwarf galaxies to probe Euclid Wide Survey detection capabilities
    Local Universe dwarf galaxies can serve as both cosmological and mass assembly probes. Deep surveys have enabled the study of these objects down to the low...
  • Publicación
    Euclid preparation: LXXV. Estimating galaxy physical properties using CatBoost chained regressors with attention
    The Euclid Space Telescope will image about 14 000 deg 2 of the extragalactic sky at visible and near-infrared wavelengths, providing a dataset of unprecedented...
  • Publicación
    Euclid preparation: LXXXI. The impact of nonparametric star formation histories on spatially resolved galaxy property estimation using synthetic Euclid images
    Aims. We analyzed the spatially resolved and global star formation histories (SFHs) for a sample of 25 TNG50-SKIRT Atlas galaxies to assess the feasibility of...
  • Publicación
    Euclid preparation: LXXXII. Predicting star-forming galaxy scaling relations with the spectral stacking code SpectraPyle
    We introduce SpectraPyle, a versatile spectral stacking pipeline developed for the Euclid mission's NISP spectroscopic surveys, aimed at extracting faint...
  • Publicación
    Euclid preparation: XLII. A unified catalogue-level reanalysis of weak lensing by galaxy clusters in five imaging surveys
    Precise and accurate mass calibration is required to exploit galaxy clusters as astrophysical and cosmological probes in the Euclid era. Systematic errors in...
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    Euclid preparation: XLIII. Measuring detailed galaxy morphologies for Euclid with machine learning
    The Euclid mission is expected to image millions of galaxies at high resolution, providing an extensive dataset with which to study galaxy evolution. Because...
  • Publicación
    Euclid preparation: XLIX. Selecting active galactic nuclei using observed colours
    The Euclid space mission will cover over 14 000 deg 2 with two optical and near-infrared spectro-photometric instruments, and is expected to detect around ten...
  • Publicación
    Euclid preparation: XLV. Optical emission-line predictions of intermediate-z galaxy populations in GAEA for the Euclid Deep and Wide Surveys
    In anticipation of the upcoming Euclid Wide and Deep Surveys, we present optical emission-line predictions at intermediate redshifts from 0.4 to 2.5. Our...
  • Publicación
    Euclid: A complete Einstein ring in NGC 6505
    We report the discovery of a complete Einstein ring around the elliptical galaxy NGC 6505, at z = 0.042. This is the first strong gravitational lens discovered...