Astrophysical: Galaxies

  • Publication
    Chemical behavior of the dwarf irregular galaxy NGC6822. Its PN and HII region abundances
    Aims: We aim to derive the chemical behavior of a significant sample of PNe and HII regions in the irregular galaxy NGC 6822. The selected objects are...
  • Publication
    Chemical composition of B-type supergiants in the OB 8, OB 10, OB 48, OB 78 associations of M 31
    Absolute and differential chemical abundances are presented for the largest group of massive stars in M 31 studied to date. These results were derived from...
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    Chemical composition of extremely metal-poor stars in the Sextans dwarf spheroidal galaxy
    Context: Individual stars in dwarf spheroidal galaxies around the Milky Way Galaxy have been studied both photometrically and spectroscopically. Extremely metal...
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    Chemical composition of the young massive cluster NGC 1569-B
    Context. The chemical composition of young massive clusters (YMCs) provides stellar population information on their host galaxy. As potential precursors of...
  • Publication
    Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
    We present an implementation of stellar evolution and chemical feedback for smoothed particle hydrodynamics simulations. We consider the timed release of...
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    Chemical enrichment in very low metallicity environments: Boötes I
    We present different chemical evolution models for the ultrafaint dwarf galaxy Boötes I. We either assume that the galaxy accretes its mass through smooth...
  • Publication
    Chemical Evolution and the Galactic Habitable Zone of M31
    We have computed the Galactic Habitable Zones (GHZs) of the Andromeda galaxy (M31) based on the probability of terrestrial planet formation, which depends on...
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    Chemical evolution of elliptical galaxies with a variable IMF. A publicly available code
    Growing evidence in recent years suggests a systematic variation of the stellar initial mass function (IMF), being top-heavy for starburst galaxies and possibly...
  • Publication
    Chemical evolution of ultra-faint dwarf galaxies in the self-consistently calculated integrated galactic IMF theory
    The galaxy-wide stellar initial mass function (gwIMF) of a galaxy in dependence on its metallicity and star formation rate can be calculated by the integrated...