Radial velocities for early type stars in six galactic regions

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Early Stars, Galactic Structure, Radial Velocity, Stellar Motions, Stellar Spectrophotometry, Cross Correlation, Data Reduction, Spectral Correlation, Velocity Measurement

Scientific paper

Coudé spectroscopy has been carried out for 353 stars of spectral types B0 - A0 and V magnitudes between 6m.5 and 10m.8, selected in six regions (three northern and three southern) close to the galactic plane at the galactic longitudes 135°, 175°, 315° and 350°. The radial velocities were obtained by cross-correlating each spectrogram with a reference spectrogram giving an internal error of 1.4 km/s.

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