Publicaciones

  • Detection of barium in the atmospheres of the ultra-hot gas giants WASP-76b and WASP-121b. Together with new detections of Co and Sr+ on WASP-121b

    Context. High-resolution spectroscopy studies of ultra-hot Jupiters have been key in our understanding of exoplanet atmospheres. Observing into the atmospheres of these giant planets allows for direct constraints on their atmospheric compositions and dynamics while laying the groundwork for new research regarding their formation and evolution

    Azevedo Silva, T. et al.

    Fecha de publicación:

    10
    2022
  • Hubble constant and nuclear equation of state from kilonova spectro-photometric light curves

    The merger of two compact objects of which at least one is a neutron star is signalled by transient electromagnetic emission in a kilonova (KN). This event is accompanied by gravitational waves and possibly other radiation messengers such as neutrinos or cosmic rays. The electromagnetic emission arises from the radioactive decay of heavy r-process

    Pérez-García, M. A. et al.

    Fecha de publicación:

    10
    2022
  • Measuring Cosmological Parameters with Type Ia Supernovae in redMaGiC Galaxies

    Current and future cosmological analyses with Type Ia supernovae (SNe Ia) face three critical challenges: (i) measuring the redshifts from the SNe or their host galaxies; (ii) classifying the SNe without spectra; and (iii) accounting for correlations between the properties of SNe Ia and their host galaxies. We present here a novel approach that

    Chen, R. et al.

    Fecha de publicación:

    10
    2022
  • SPECULOOS Northern Observatory: Searching for Red Worlds in the Northern Skies

    SPECULOOS is a ground-based transit survey consisting of six identical 1 m robotic telescopes. The immediate goal of the project is to detect temperate terrestrial planets transiting nearby ultracool dwarfs (late M-dwarf stars and brown dwarfs), which could be amenable for atmospheric research with the next generation of telescopes. Here, we report

    Burdanov, Artem Y. et al.

    Fecha de publicación:

    10
    2022
  • A refined dynamical mass for the black hole in the X-ray transient XTE J1859+226

    We present two contiguous nights of simultaneous time-resolved Gran Telescopio Canarias spectroscopy and William Herschel Telescope photometry of the black hole X-ray transient XTE J1859+226, obtained in 2017 July during quiescence. Cross-correlation of the individual spectra against a late K-type spectral template enabled us to constrain the

    Yanes-Rizo, I. V. et al.

    Fecha de publicación:

    11
    2022
  • Black hole mass and spin measurements through the relativistic precession model: XTE J1859+226

    The X-ray light curves of accreting black holes and neutron stars in binary systems show various types of quasi-periodic oscillations (QPOs), the origin of which is still debated. The relativistic precession model identifies the QPO frequencies with fundamental time-scales from General Relativity, and has been proposed as a possible explanation of

    Motta, S. E. et al.

    Fecha de publicación:

    11
    2022