Astrophysical: Methods

  • Publication
    Phasing segmented mirrors using defocused images at visible wavelengths
    Plans for future optical telescopes of diameter more than 10m are based on segmented mirrors, made up of hundreds or even thousands of segments. A challenge for...
  • Publication
    Photo-dynamical characterisation of the TOI-178 resonant chain. Exploring the robustness of transit-timing variations and radial velocity mass characterisations
    Context. The TOI-178 system consists of a nearby, late-K-dwarf with six transiting planets in the super-Earth to mini-Neptune regime, with radii ranging from to...
  • Publication
    Photometric Amplitude Distribution of Stellar Rotation of KOIs—Indication for Spin-Orbit Alignment of Cool Stars and High Obliquity for Hot Stars
    The observed amplitude of the rotational photometric modulation of a star with spots should depend on the inclination of its rotational axis relative to our...
  • Publication
    Photometric binaries in 50 globular clusters
    The HST/ACS Survey of Galactic globular clusters (GGCs) is a HST Treasury project aimed at obtaining high precision photometry in a large sample of globular...
  • Publication
    Photometry and asteroseismology of delta Scuti stars in Praesepe
    We discuss observations and seismic analyses for three multi-periodic delta Scuti stars in the Praesepe cluster: BU, BN and BV Cnc. For two stars (BU and BN Cnc...
  • Publication
    Photometry of high-redshift blended galaxies using deep learning
    The new generation of deep photometric surveys requires unprecedentedly precise shape and photometry measurements of billions of galaxies to achieve their main...
  • Publication
    Photospheric activity of the Sun with VIRGO and GOLF. Comparison with standard activity proxies
    We study the variability of solar activity using new photospheric proxies originally developed for the analysis of stellar magnetism with the CoRoT and Kepler...
  • Publication
    Photospheric and chromospheric magnetic activity of seismic solar analogs. Observational inputs on the solar-stellar connection from Kepler and Hermes
    We identify a set of 18 solar analogs among the seismic sample of solar-like stars observed by the Kepler satellite rotating between 10 and 40 days. This set is...
  • Publication
    Photospheric Hanle diagnostic of weak magnetic dipoles in stars
    Aims: We propose and explore a new diagnostic technique based upon the linear polarization emitted in Hanle-sensitive lines in disk-integrated stars where a...