Computation of ephemerides for long-period variable stars for the HIPPARCOS mission
Figueras, F.; Barthes, D.; Mennessier, M. O.; Mattei, J. A.; Boughaleb, H.
France, Spain, United States
Abstract
In order to predict the luminosities of LPVs observed by Hipparcos, many visual light curves, characterized by irregularly spaced data, were analyzed using original and complementary methods. The obtained power spectra, including amplitudes and phases, are utilized in the computation of the ephemerides. The predictions are regularly checked with observations. In this paper we present the methods and suggest some physical implications that are evoked.