Astrophysical: Variable stars

  • Publication
    Rapid photometry of the Delta Scuti variable 63 Herculis and of the F 2V star HD 155543 - Observations and analysis of the time series
    In this paper we report the results of simultaneous observations, using rapid continuous differential photometry, of the δ Scuti star 63 Her and of a normal...
  • Publication
    Rapid variations and a very deep minimum in the light curve of 3C 345
    This paper reports CCD photometry of 3C345 taken in the summer of 1988 and spring of 1989 which show this object declining to the faintest magnitude yet...
  • Publication
    STARE Results on a Single Field: Tens of New Pulsating Stars
    We present preliminary results on variable stars of a STARE's three month observational run centered at the Cygnus constellation. A total amount of aprox. 14000...
  • Talk
    The ATLAS All-Sky Survey for Dangerous Asteroids
    The "Asteroid Terrestrial-impact Last Alert System" (ATLAS) is funded by NASA to find dangerous asteroids before they strike the Earth. It has operated from two...
  • Publication
    The cataclysmic variable SS Cygni
    A general panorama of SS Cygni is presented. The paper first describes the CV cataclysmic variables and the current theories which attempt to describe their...
  • Publication
    The galactic globular cluster system - Calibration of the ratio R = N(HB)/N(RGB)
    On the basis of Synthetic Horizontal Branches computed with Sweigart and Gross (1976) Horizontal Branch evolutionary tracks, and by means of Sweigart and Gross...
  • Publication
    The galactic globular cluster system - Constraints from Synthetic Horizontal Branches
    Synthetic horizontal branches, constructed on the basis of Sweigart and Gross (1976) horizontal branch star models and of the recently revised theoretical...
  • Publication
    Time-resolved photometry of BN and CU Cancri, two delta Scuti stars in the Praesepe cluster. Fourth photometry campaign of the STEPHI network
    The fourth photometry campaign of the Stellar photometry International (STEPHI) network was carried out in January 1992. On this occasion, the delta Scuti-like...
  • Publication
    Ultraviolet and infrared monitoring of FG Sagittae during 1982-1989 - Evolutionary status
    Ultraviolet IUE spectra and infrared JHKL photometry of FG Sge obtained over the period 1982-1989 indicate that the cooling rate of the star observed until...