Radial velocity measurements complementary to HIPPARCOS

Details Radial velocity measurements complementary to HIPPARCOS Radial velocity measurements complementary to HIPPARCOS

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.177..217m&link_type=abstract

In ESA The Sci. Aspects of the Hipparcos Space Astrometry Mission p 217/220 (SEE N82-30146 20-88)

Astronomy and Astrophysics

Astronomy

1

Astrometry, Electrophotometers, Esa Satellites, Radial Velocity, Chemical Composition, Data Acquisition, F Stars, G Stars, Stellar Spectrophotometry, Stellar Temperature

Scientific paper

The importance of radial velocity measurements in galactic evolution, kinematics, and dynamics investigations is pointed out, and photoelectric scanning measurement techniques are described. Cassegrain spectrometers covering a 1600 A spectral region, with 2 A/mm dispersion can measure the radial velocities for cold stars. Simultaneously with radial velocity determination, the scanners measure line broadening and give mean line blocking. Radial velocities can be deduced for dwarf and giant stars. For F and G dwarfs, mean heavy element concentration can be estimated accurately.

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