The Number of stars between definite limits of proper motion, visual magnitude and galactic latitude for each spectral class, together with some other investigations von Kapteyn, Jacobus C. 1851-1922

The secular Parallax of the stars of different magnitude, galactic latitude and spectrum von Kapteyn, Jacobus C. 1851-1922

First and second report on the progress of the plan of selected areas Published by the astronomical laboratory at Groningen von Kapteyn, Jacobus C. 1851-1922

Recent researches in the structure of the universe von Kapteyn, Jacobus C. 1851-1922

The Parallax of the Hyades, derived from photographic plates prepared by Prof. Anders Donner at Helsingfors, and Prof. F. Küstner at Bonn, measured and discussed by Prof. J[acobus]... von Kapteyn, Jacobus C. 1851-1922

Parallaxes of the clusters h and [Kappa] Persei, of Groombridge 745,61 Cygni, and surrounding stars, contained on photographs prepared by Prof. A. Donner, measured and discussed by... von Kapteyn, Jacobus C. 1851-1922

Components t and y of the proper motions and other quantities for the stars of Bradley von Kapteyn, Jacobus C. 1851-1922

kostenfrei

Skew frequency curves in biology and statistics von Kapteyn, Jacobus C. 1851-1922, Uven, M. J. van 1878-

Mount Wilson catalogue of photographic magnitudes in selected areas 1 - 139 von Seares, Frederick Hanley 1873-1964, Kapteyn, Jacobus C. 1851-1922, Rhyn, Pieter Johannes van 1886-

Inhaltsverzeichnis

The proper motions of 3714 stars derived from plates taken at the observatories of Helsingfors and Cape of Good Hope, by J. C. Kapteyn with the cooperation of H. Weersma von Kapteyn, Jacobus C. 1851-1922

Reply to pearsons criticisms von Kapteyn, Jacobus C. 1851-1922

The proper Motions of the Hyades, derived from plates prepared by Prof. Anders Donner, measured and discussed by Prof. J[acobus] C[ornelius] Kapteyn, Dir., and W. de Sitter, Sc. D. von Kapteyn, Jacobus C. 1851-1922

The proper Motion of 2380 stars derived from plates taken at the Royal Observatory, Cape of Good Hope von Kapteyn, Jacobus C. 1851-1922

Skew frequency curves in biology and statistics von Kapteyn, Jacobus C. 1851-1922, Uven, M. J. van 1878-

List of parallax determinations compiled by Jacobus Cornelius Kapteyn and H. A. Weersma von Kapteyn, Jacobus C. 1851-1922

List of parallax determinations von Kapteyn, Jacobus C. 1851-1922, Weersma, Herman Albertus 1877-1961

The Parallax of the Hyades, derived from photographic plates prepared by Prof. Anders Donner at Helsingfors, and Prof. F. Küstner at Bonn, measured and discussed by Prof. J[acobus]... von Kapteyn, Jacobus C. 1851-1922

Skew frequency curves in biology and statistics von Kapteyn, Jacobus C. 1851-1922

Components r and v of the proper motions and other quantities for the stars of Bradley von Kapteyn, Jacobus C. 1851-1922

On the luminosity of the fixed stars by J[acobus] C[ornelius] Kapteyn von Kapteyn, Jacobus C. 1851-1922