Tipo de publicación: Sin árbitro

  • Publicación
    Density bounding in the HII regions of galactic discs: evidence and consequences
    We present four lines of evidence leading to the conclusion that the HII regions in the discs of normal galaxies,notably the highly luminous regions,are density...
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    Density Dependence of Supernova Feedback Efficiency
    Not Available
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    Density of Low-ionization Structures in PNe
    Not Available
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    Density profiles of galaxy bulges and nuclei
    The bulge contribution to the inner density profile of a galaxy is well traced by the bulge's NIR surface brightness profile. We map the surface brightness...
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    Density studies of giant extragalactic H II regions
    The variation of the electron density with position in a selected group of bright giant extragalactic H II regions has been studied using long slit...
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    Density wave triggered star formation in grand design spirals
    In normal spiral galaxies the arms are the main sites for star formation. This is the cause of their optical contrast compared with the rest of the disc. The...
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    Departures from axial symmetry, and starburst activity, in the bulge of NGC 4736
    Evidence for circumnuclear starbursts in spiral galaxies can take the form of a blue excess near the nucleus, but more frequently (because of dust extinction) H...
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    Depleted diffuse bands in circumstellar envelopes of post-AGB stars
    We report on new results in the search for diffuse bands, signatures of still unknown origin, in the circumstellar envelopes of evolved (post-AGB) stars.
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    Derivation of star formation histories through deep color-magnitude diagrams: the dependency on stellar evolution models.
    We review the state of the art of the derivation of star formation histories from color-magnitude diagrams reaching the oldest main sequence turnoffs. From the...