Journal: Astronomy and Astrophysics

  • Publication
    The Penn State - Toruń Centre for Astronomy Planet Search stars (Corrigendum). III. The sample of evolved stars
    Based on observations obtained with the Hobby-Eberly Telescope, which is a joint project of the University of Texas at Austin, the Pennsylvania State University...
  • Publication
    The Penn State - Toruń Centre for Astronomy Planet Search stars. II. Lithium abundance analysis of the red giant clump sample
    Context. Standard stellar evolution theory does not predict existence of Li-rich giant stars. Several mechanisms for Li-enrichment have been proposed to operate...
  • Publication
    The Penn State - Toruń Centre for Astronomy Planet Search stars. IV. Dwarfs and the complete sample
    Context. Our knowledge of the intrinsic parameters of exoplanets is as precise as our determinations of their stellar hosts parameters. In the case of radial...
  • Publication
    The Penn State-Toruń Centre for Astronomy Planet Search stars. I. Spectroscopic analysis of 348 red giants
    Aims: We present basic atmospheric parameters (Teff, log g, vt, and [Fe/H]) as well as luminosities, masses, radii, and absolute radial velocities for 348 stars...
  • Publication
    The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
    The Photodetector Array Camera and Spectrometer (PACS) is one of the three science instruments on ESA's far infrared and submillimetre observatory. It employs...
  • Publication
    The planetary nebulae and H II regions in NGC 6822 revisited. Clues to AGB nucleosynthesis
    Aims: The chemical behaviour of an ample sample of planetary nebulae (PNe) in NGC 6822 is analysed. Methods: Spectrophotometric data of 11 PNe and two H ii...
  • Publication
    The planetary system around HD 190622 (TOI-1054). Measuring the gas content of low-mass planets orbiting F-stars
    Context. Giant planets are known to dominate the long-term stability of planetary systems due to their prevailing gravitational interactions, but they are also...
  • Publication
    The polar orbit of the warm Neptune GJ 436b seen with VLT/ESPRESSO
    GJ 436b might be the prototype of warm Neptunes that have undergone late migration induced by an outer companion. Precise determination of the orbital...
  • Publication
    The Polarimetric and Helioseismic Imager on Solar Orbiter
    Aims: This paper describes the Polarimetric and Helioseismic Imager on the Solar Orbiter mission (SO/PHI), the first magnetograph and helioseismology instrument...