Astrophysical: Main sequence stars

  • Publication
    The age decay of stellar magnetic activity in MS field solar-type stars
    The age decay of two indicators of the stellar magnetic activity (λ2800 Mg II emission flux and λ10830 He I equivalent width) have been studied for field solar...
  • Publication
    The He I D3 5876 A line as an activity and structural indicator in F-type Hyades stars
    The first results of a study of F-type MS stars using the He I D3 absorption feature at 5876 A as an indicator of stellar activity and structure are presented...
  • Publication
    The nature of the Kleinmann-Low nebula
    Recent data on, and interpretations of the Kleinmann-Low nebula are examined. It is suggested that associated high velocity gas is radiatively accelerated by a...
  • Publication
    The oldest galactic open clusters - New CCD photometry and colour-magnitude diagrams
    The paper presents CCD photometry for stars in three fields centered on the old open cluster NGC 188 and in four fields on the intermediate-age cluster NGC 7789...
  • Publication
    The spectra of late-type dwarfs and sub-dwarfs in the near ultraviolet. I - Line identifications
    Spectra from IUE of 6 main sequence and near main sequence stars from classes A5 to G8, between 2700 A and 2900 A wavelength are described. In toto, some 250...