Radial velocities of bright IAU standards have been obtained photographically over the past decade using the long camera of the DAO 1.2 meter telescope's coudé spectrograph. Most of the stars observed have been found to be constant in velocity to better than 0.15 km/s over that interval. The mean velocities agree with the IAU velocities, on the average, within 0.10 km/s, although mean velocities of some individual stars differ considerably more than this from the IAU value. A preliminary determination of the zero point of the long camera system, and hence of the IAU system, has been made from observations of the asteroid Vesta, whose actual radial velocity has been calculated from its orbital elements.
Calibration of Fundamental Stellar Quantities
- Pub Date:
- Minor Planets:Radial Velocities;
- Radial Velocities:Minor Planets;
- Radial Velocities:Standard Stars;
- Standard Stars:Radial Velocities