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Searches of the Periods and Definition of Variability Types of New Variable Stars TX Crv, DP Cam, IRAS 17583+5150

Solonovich, A. P.; Bryukhanov, I. S.; Sergey, I. M.

Measurements of brightness of stars TX Crv, DP Cam, IRAS 17583+5150 opened in "IRAS" and "HIPPARCOS" experiments are carried out using negatives of the Odessa observatory. Proposed types of these stars: TX Crv -- type ISB(?), DP Cam -- type ISB, IRAS 17583+5150 -- type SRB (SRC).

Chemical and Dynamical Evolution in the Solar Neighbourhood

Kovtyukh, V.; Soubiran, C.; Bienaymé, O. +1 more

We measure the surface mass density of the galactic disk in the solar neighbourhood using two samples of red clump stars, we also determine the thin and thick disk chemical properties. High resolution spectral data of red clump stars towards the NGP have been obtained with the spectrograph Elodie at OHP for Tycho-2 selected stars. Nearby Hipparcos…