Journal: Astrophysical Journal

  • Publication
    Lithium abundances in classical and weak T Tauri stars
    A study on the lithium abundance in 36 T Tauri stars (mass range 0.4-2.25 solar masses), partly based on high-dispersion spectra taken with the Isaac Newton...
  • Publication
    Long-term starspot activity of short-period RS Canum Venaticorum stars. III - BH Virginis
    The photometric distortion waves in the light curves of the short-period RS CVn system BH Vir by a dark, circular spot model for the active regions on the...
  • 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
    Modeling an accretion disk in NGC 985
    An optically thick relativistic Keplerian accretion disk model is used to fit the broad component of the H-alpha, H-beta, and He I 5876 A emission line profiles...
  • Publication
    Multifrequency-spectral behavior of the BL Lacertae objects OI 90.4 and 3C 66A
    Single-epoch multifrequency data for the BL Lac objects OI 90.4 and 3C 66A, spanning radio through ultraviolet wavelengths, are presented, as well as other...
  • Publication
    New 325 MHz observations of H II galaxies - The mechanisms that shape the unusual radio spectra
    The B array of the VLA has observed a sample of seven H II galaxies at 325 and 1489 MHz; the radio continuum spectra thus obtained exhibit a wide variety of...
  • Publication
    NGC 985 - Extended ionized regions and the far-infrared luminosity of a ring-shaped Seyfert galaxy
    Narrow-band H-alpha images and long-slit spectroscopy of the Seyfert galaxy NGC 985 are presented. Large-scale extended ionized zones are seen to cover a...
  • Publication
    Non-local thermodynamic equilibrium line profiles, rotation, and magnetic fields in seven DA white dwarfs
    Non-LTE calculations of H-alpha line profiles are presented and applied to derive rotational velocities from high-resolution spectra of DA white dwarfs. This...
  • Publication
    Observation and interpretation of the asymmetric Stokes Q, U, and V line profiles in sunspots
    We present a first approach to systematic characterization and interpretation of observed asymmetries of Stokes profiles as a function of spatial position...