Astrophysical: Solar neighborhood

  • Publication
    MG II observed in the local interstellar medium - The local cloud
    Observations of interstellar absorptions superposed on the chromospheric Mg II emissions of nearby cool stars have been used to explore the structure of the...
  • Publication
    New windows to the universe; Proceedings of the Eleventh European Regional Astronomy Meeting, Universidad de la Laguna, Spain, July 3-8, 1989. Part II
    Recent observational and theoretical investigations of the sun and sunlike stars and of galactic structure and evolution are discussed in reviews and reports...
  • Publication
    Observation of fine structure in the cold phase of the local interstellar medium using K I absorption
    The K I 7699-A resonance absorption line was used to observe a group of 18 early-type stars within a 200-pc radius of the sun with a signal-to-noise ratio of 50...
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    On the O/Fe versus Fe/H relationship and the progenitors of type I supernovae
    The new observational O/Fe versus Fe/H abundance relationship for halo stars is studied in terms of several models of chemical evolution for the solar...
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    Optical properties of Y dwarfs observed with the Gran Telescopio Canarias
    Aims: Our science goals are to characterise the optical properties of Y dwarfs and to study their consistency with theoretical models. Methods: A sample of five...
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    Planck early results. XIX. All-sky temperature and dust optical depth from Planck and IRAS. Constraints on the "dark gas" in our Galaxy
    An all sky map of the apparent temperature and optical depth of thermal dust emission is constructed using the Planck-HFI (350μm to 2 mm) andIRAS(100μm) data...
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    Production of Lithium in the Galactic Disk
    The abundance of Li in stars formed within the past 5 Gyr is logN(Li)=3.2(+/-0.2), while the corresponding value for the oldest stars in the Galaxy is logN(Li)...
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    Radial velocities of nearby RR Lyrae stars.
    A survey of chemical abundances and radial velocities for a spatially selected sample of RR Lyrae stars has been started. Assuming an absolute magnitude of -0.6...
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    Redetermination of the interstellar C-12/C-13 ratio in the solar vicinity
    An analysis of 50 optical spectra of the interstellar methylidyne ion in the direction of HD26676 and HD149038 derived very similar interstellar isotopic ratios...