Publicaciones

  • Cosmological gas accretion history onto the stellar discs of Milky Way-like galaxies in the Auriga simulations - (I) Temporal dependency

    We use the 30 simulations of the Auriga Project to estimate the temporal dependency of the inflow, outflow, and net accretion rates onto the discs of Milky Way-like galaxies. The net accretion rates are found to be similar for all galaxies at early times, increasing rapidly up to $\sim 10~\mathrm{M}_\odot \, \mathrm{yr}^{-1}$. After ~6 Gyr of

    Iza, Federico G. et al.

    Fecha de publicación:

    11
    2022
  • Evidence of a flare ignited above a low-latitude spotted active region in the ultrafast rotator HK Aqr

    We study the magnetic activity in the ultrafast rotator dMe HK Aqr using tomography techniques with high-resolution spectroscopy. We aim to characterize how this magnetic activity appears in a regime of very fast rotation without external forces, given that HK Aqr is, very likely, a single star. We find dark spots located at low latitudes. We also

    Martínez González, María Jesús et al.

    Fecha de publicación:

    11
    2022
  • Forecasting the success of the WEAVE Wide-Field Cluster Survey on the extraction of the cosmic web filaments around galaxy clusters

    Next-generation wide-field spectroscopic surveys will observe the infall regions around large numbers of galaxy clusters with high sampling rates for the first time. Here, we assess the feasibility of extracting the large-scale cosmic web around clusters using forthcoming observations, given realistic observational constraints. We use a sample of

    Cornwell, Daniel J. et al.

    Fecha de publicación:

    12
    2022
  • A high angular resolution view of the PAH emission in Seyfert galaxies using JWST/MRS data

    Polycyclic aromatic hydrocarbons (PAHs) are carbon-based molecules that are ubiquitous in a variety of astrophysical objects and environments. In this work we use JWST/MIRI MRS spectroscopy of three Seyferts to compare their nuclear PAH emission with that of star-forming (SF) regions. This study represents the first of its kind to use sub-arcsecond

    García-Bernete, I. et al.

    Fecha de publicación:

    10
    2022
  • An Astrophysical Perspective of Life. The Growth of Complexity

    The existence of life is one of the most fundamental problems of astrophysics. The intriguing existence of progressively complex and apparently improbable living beings should be a general tendency of life in the Universe. We are looking for general physical laws governing the growth of complexity in any astrophysical environment. We posit the

    Sánchez, F. et al.

    Fecha de publicación:

    10
    2022
  • Fundamental physics with ESPRESSO: Constraining a simple parametrisation for varying α

    Context. The spectrograph ESPRESSO recently obtained a limit on the variation of the fine-structure constant, α, through measurements along the line of sight of a bright quasar with a precision of 1.36 ppm at 1σ level. This imposes new constraints on cosmological models with a varying α. We assume such a model where the electromagnetic sector is

    da Fonseca, Vitor et al.

    Fecha de publicación:

    10
    2022