• Publication
    An equatorial ultra iron-poor star identified in BOSS
    We report the discovery of SDSS J131326.89-001941.4, an ultra iron-poor red giant star ([Fe/H] ≃ -4.3) with a very high carbon abundance ([C/Fe] ≃ +2.5). This...
  • Publication
    An ESPRESSO view of the HD 189733 system. Broadband transmission spectrum, differential rotation, and system architecture
    Context. The development of state-of-the-art spectrographs has ushered in a new era in the detection and characterization of exoplanetary systems. The...
  • Publication
    An estimate of the solar background irradiance power spectrum.
    Knowledge of the solar irradiance background is of great importance to solar and stellar physics. In particular, its contribution to the solar oscillations...
  • Publication
    An estimation of global solar p-mode frequencies from IRIS network data: 1989-1996
    The IRIS network has accumulated full disk helioseismological data since July 1989, i.e. a complete 11-year solar cycle. Since the last paper publishing a...
  • Publication
    An Estimation of the Acoustic Cutoff Frequency of the Sun Based on the Properties of the Low-Degree Pseudomodes
    The acoustic cutoff frequency (νac) is an important atmospheric parameter whose estimation has in the past been based on the study of power spectra that have...
  • Publication
    An evaluation of the exposure in nadir observation of the JEM-EUSO mission
    We evaluate the exposure during nadir observations with JEM-EUSO, the Extreme Universe Space Observatory, on-board the Japanese Experiment Module of the...
  • Publication
    An evanescent Vision of the Sacred? The equinoctial Sun at the Iberian Sanctuary of Castellar
    We present results of an archaeoastronomical study of the Iberian cave-sanctuary of La Cueva de la Lobera in Castellar (Jaén, Spain), whose foundation has been...
  • Publication
    An ever-present Gaia snail shell triggered by a dark matter wake
    We utilize a novel numerical technique to model star formation in cosmological simulations of galaxy formation - called SUPERSTARS - to simulate a Milky Way...
  • Publication
    An evolutionary sequence of expanding hydrogen shells in galaxy discs
    Aims:Large HI shells, with diameters of hundreds of pc and expansion velocities of 10-20 km s-1 have been detected in their hundreds in the Milky Way and are...