Computation of ephemerides for long-period variable stars for the HIPPARCOS mission

Astronomy and Astrophysics – Astronomy

Scientific paper

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Hipparcos Satellite, Orbital Mechanics, Planet Ephemerides, Sky Surveys (Astronomy), Variable Stars, Astronomical Photometry, Position (Location), Power Spectra, Stellar Magnitude

Scientific paper

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.

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