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Contribution of HIPPARCOS to the Determination of Precession

Vityazev, V. V.

The IAU (1976) luni-solar precession constant was derived by Fricke from intensive study of the catalog of 512 FK4-FK4/Sup distant stars. At present, when the data from the catalog HIPPARCOS is available, it is helpful to reconsider Fricke's analysis. This paper presents a redetermination of precession based on the following new factors: (a) the a…

Effective Temperatures of Solar Type Stars

Shenavrin, V. I.; Glushneva, I. N.; Roshchina, I. A.

For 29 stars of G0-G5 spectral types with color indices 0.60 leq Bndash V le 0.68 and parallaxes obtained by Hipparcos satellite effective temperatures, angular diameters and radii are determined by means of the method of infrared fluxes (IRFM) on the basis of JHKLM photometry. Effective temperatures obtained by iterations in the process of combin…