Publication type: Refereed

  • Publication
    The changing nebula around the hot R Coronae Borealis star DY Centauri
    Among the distinguishing characteristics of the remarkable hot R Coronae Borealis star DY Centauri, which was recently found to be a spectroscopic binary, is...
  • Publication
    The Changing Rotational Light-curve Amplitude of Varuna and Evidence for a Close-in Satellite
    From CCD observations carried out with different telescopes, we present short-term photometric measurements of the large trans-Neptunian object Varuna in 10...
  • Publication
    The Changing-look Optical Wind of the Flaring X-Ray Transient Swift J1858.6-0814
    We present the discovery of an optical accretion disk wind in the X-ray transient Swift J1858.6-0814. Our 90-spectrum data set, taken with the 10.4 m Gran...
  • Publication
    The Chemical Abundances of the Hydrogen-poor Planetary Nebulae A30 and A58
    We present new CCD narrowband images and spatially resolved intermediate-dispersion spectroscopy of the hydrogen-poor nebulae A30 and A58. These data have...
  • Publication
    The Chemical Abundances of Tycho G in Supernova Remnant 1572
    We present an analysis of the chemical abundances of the star Tycho G in the direction of the remnant of supernova (SN) 1572, based on Keck high-resolution...
  • Publication
    The chemical characterization of halo substructure in the Milky Way based on APOGEE
    Galactic haloes in a Λ-CDM universe are predicted to host today a swarm of debris resulting from cannibalized dwarf galaxies. The chemodynamical information...
  • Publication
    The Chemical Composition and Evolutionary Status of R-Type Stars
    Not Available
  • Publication
    The chemical composition gradient across M 33
    The abundance gradient in M 33 is studied on the basis of IPCS and CCD data on emission lines in selected H II regions, using O II, O III, S II, and S III in...
  • Publication
    The chemical composition of carbon stars. The R-type stars
    Aims. The aim of this work is to shed some light on the problem of the formation of carbon stars of R-type from a detailed study of their chemical composition...