Showing papers by "European Southern Observatory published in 1963"
01 Jan 1963
TL;DR: In this article, the present state of the luminosity calibrations in the MK system is reviewed with reference to recent work based on proper motions and radial velocities, and on trigonometric parallaxes, resulting in evidence for corrections of about 0.4 mag.
Abstract: Attention is drawn to important systematic effects in the calibration procedure due to the accidental errors in the measured luminosity criteria. The present state of the luminosity calibrations in the MK system is reviewed with reference to recent work based on proper motions and radial velocities, and on trigonometric parallaxes, resulting in evidence for corrections of about — 0.4 mag. for the K0–K5, III stars. Brief reference is made to the developments with regard to the M v (K) system.
4 citations