The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 360
andsensibly linear increase in average radial velocity withincreasing absolute magnitude. The gain in velocity amountsto about 1.5 kilometers per second for each unit of magnitude,and applies to both giants and dwarfs. The gap between theK and M stars of high and low luminosity is clearly… … ,-e } ZC Z !Z !11^ ZS ^i r it ZS x Fig. 21. Variation of Radial Velocity (Horizontal Distances)With Absolute Magnitude (Vertical Distances). Points representgroups of stars having F and G spectra; crosses represent similargroups of K and M stars. From the investigation by Adams andStromberg, Mt.…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
