. Carnegie Institution of Washington publication. 66 the corresponding lines of the comparison spec- trum, we know that the star is moving away from the earth at a velocity proportional to the amount of the shift. Displacement toward the violet means motion toward the earth. This method, first applied on a large and comprehensive plan by Campbell, of the Lick Observatory, gave the ve- locities of 1,500 stars and yielded many conclusions of great importance. The 6o-inch reflector has. Fir,. 49.— Spectrum of Lalande 1966, showing velocity of 325 km. per second toward the Karth. Position of lines


. Carnegie Institution of Washington publication. 66 the corresponding lines of the comparison spec- trum, we know that the star is moving away from the earth at a velocity proportional to the amount of the shift. Displacement toward the violet means motion toward the earth. This method, first applied on a large and comprehensive plan by Campbell, of the Lick Observatory, gave the ve- locities of 1,500 stars and yielded many conclusions of great importance. The 6o-inch reflector has. Fir,. 49.— Spectrum of Lalande 1966, showing velocity of 325 km. per second toward the Karth. Position of lines in stellar spectrum and of corresponding lines in comparison spectrum indicated at bottom. enabled us to extend such measures to many fainter stars. A discussion of the resulting velocities shows that Kapteyn's two star-streams extend into space much farther than the original data (for nearer stars) permitted them to be traced. 1 hus the view that the main body of the universe is constituted of these streams receives added support. STARS OF HIGH VELOCITY. Kapteyn and Campbell independently found that the radial velocities of the stars, corrected for the sun's motion, range from about 6 kilometers. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington


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