Leiden University Scholarly Publications

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(1 - 15 of 15)
On a method based on a property of central projection for reducing the rectangular coordinates measured on an arbitray plate to those of any other plate
Gent, H. van 1931
On a method based on a property of central projection for reducing the rectangular coordinates measured on an arbitray plate to those of any other plate
Article / Letter to editor
open access
Corrections to a number of P.G.C. stars derived from differential observations with the meridian circle at Leiden
Hins, C.H. 1931
Corrections to a number of P.G.C. stars derived from differential observations with the meridian circle at Leiden
Article / Letter to editor
open access
Photographic magnitudes of bright stars near the North Pole (Errata: 6 224)
Sitter, A. de 1931
Photographic magnitudes of bright stars near the North Pole (Errata: 6 224)
Article / Letter to editor
open access
Some problems concerning the distribution of luminosities and peculiar velocities of extragalactic nebulae
Oort, J.H. 1931
Some problems concerning the distribution of luminosities and peculiar velocities of extragalactic nebulae
Article / Letter to editor
open access
Positions of minor planets, measured on plates taken by H. van Gent
Pels, G. 1931
Positions of minor planets, measured on plates taken by H. van Gent
Article / Letter to editor
open access
The star Boss 2184 as a variable of the δ Cephei type
Hertzsprung, E. 1931
The star Boss 2184 as a variable of the δ Cephei type
Article / Letter to editor
open access
Some further computations regarding nonstatic universes
Sitter, W. de 1931
Some further computations regarding nonstatic universes
Article / Letter to editor
open access
Do the galaxies expand with the universe?
Sitter, W. de 1931
Do the galaxies expand with the universe?
Article / Letter to editor
open access
The resistance experienced by the outward moving chromospheric Ca<SUP>+</SUP> ions and its effect on the density
Woltjer Jr., J. 1931
The resistance experienced by the outward moving chromospheric Ca+ ions and its effect on the density
Article / Letter to editor
open access
A new faint variable star, of which the period is the shortest known
Gent, H. van 1931
A new faint variable star, of which the period is the shortest known
Article / Letter to editor
open access
A new variable star of short period
Hertzsprung, E. 1931
A new variable star of short period
Article / Letter to editor
open access
Determination of absolute declinations and latitude by observations at the meridian circle and the zenith telescope
Sanders, C. 1931
Determination of absolute declinations and latitude by observations at the meridian circle and the zenith telescope
Article / Letter to editor
open access
Determination of declinations and latitude from azimuths and zenith distances
Herk, G. van 1931
Determination of declinations and latitude from azimuths and zenith distances
Article / Letter to editor
open access
Photographic observations of the eclipsing variable Castor C = YY Geminorum from 1926 Oct. 2 to 1928 Jan. 13
Gent, H. van 1931
Photographic observations of the eclipsing variable Castor C = YY Geminorum from 1926 Oct. 2 to 1928 Jan. 13
Article / Letter to editor
open access
The orbits of five minor planets, discovered by H. van Gent (Errata: 6 184)
Pels, G. 1931
The orbits of five minor planets, discovered by H. van Gent (Errata: 6 184)
Article / Letter to editor
open access