THE

ASTROPHYSICAL JOURNAL

An International Review of Spectroscopy and
Astronomical Physics

PRINTED BY

The University of Chicago Press

CHICAGO

LIBRARY

CONTENTS

NUMBER I.

THE SPECTRUM OF HYDROGEN GIVEN BY THE METALLIC ARC OF

TIN, COPPER, SILVER, ETC. O. H. Basquin

ON A POSSIBLE FUNCTION OF DISRUPTIVE APPROACH IN THE FOR-

MATION OF METEORITES, COMETS, AND NEBULE. T. C.

Chamberlin

PAGE

I

-

17

THE SHIFT OF THE CADMIUM LINE OF WAVE-LENGTH 4800 DUE

TO PRESSURE. William B. Huff

ON THE COMPOUND TRIPLETS IN THE LINE SPECTRUM OF MER-

CURY. C. Runge and F. Paschen

-

THE MOTION OF Polaris IN THE LINE OF SIGHT. J. Hartmann

MINOR CONTRIBUTIONS AND NOTES: The Publications of the Alle-

gheny Observatory, F. L. O. Wadsworth, 66; Spectrum of

Nova Persei No. 2, Edward C. Pickering, 79; Nova Persei No.

2, Edward C. Pickering, 82.

NUMBER II.

THE ABSORPTION SPECTRUM OF CHLORINE. Elizabeth R. Laird

SOME PROPERTIES OF THE ELECTRIC SPARK AND ITS SPECTRUM.

Charles C. Schenck

85

MINOR CONTRIBUTIONS AND NOTES: Note on a New Form of

Radiometer, F. A. Saunders, 136; Some Recent Results

Secured with the Mills Spectrograph, W. W. Campbell, 138;

Objects Having Peculiar Spectra, Edward C. Pickering, 144;

Latitude and Longitude of the Yerkes Observatory, George E.

Hale, 146.

116

NUMBER III.

OBSERVATIONS AND EPHEMERides of the VARIABLE STAR Y Cygni.

N. C. Dunér

PECULIARITY OF FOCAL OBSERVATIONS ON THE PLANETARY NEBULÆ

AND VISUAL OBSERVATIONS OF Nova Persei WITH THE FORTY-

INCH YERKES TELESCOPE. E. E. Barnard

98839

149

151

OBSERVATIONS OF THE EARLIER SPECTRUM OF Nova Persei. Walter

S. Adams

NEBULOSITY ABOUT Nova Persei. G. W. Ritchey

NOTES ON VARIABLE STARS. J. A. Parkhurst

THE WAVE-NUMBER SYSTEM OF RHODIUM. C. P. Snyder

SPECTROSCOPIC STUDIES. I. Eduard Haschek

MINOR CONTRIBUTIONS AND NOTES: Observations of the Spectro-

scopic Binary Pegasi, W. W. Campbell, 202; The Orbit of the

Spectroscopic Binary Pegasi, Russell Tracy Crawford, 203;

Opposition of Eros (433) in 1903, Edward C. Pickering, 209;

The Inferior Conjunction of Mercury on November 4, 1901, F.

Ristenpart, 213; Publication of a New Catalogue of Variable

Stars, Messrs. Dunér, Hartwig, Müller, Oudemans, 214; A Cor-

rection, H. Seeliger, 215; Concerning the Paper "On the

Absorption Spectrum of Chlorine," Elizabeth R. Laird, 215.

NUMBER IV.

THE TWO-FOOT REFLECTING TELESCOPE of the Yerkes OBSERVA-

TORY. G. W. Ritchey

PAGE

158

167

169

179

181

217

ON THE TEMPERATURE AND COMPOSITION OF THE ATMOSPHERES OF

THE PLANETS AND THE SUN. E. Rogovsky

MINOR CONTRIBUTIONS AND NOTES: Observations of the Spectro-

scopic Binary Capella, W. W. Campbell, 261; A Determination

of the Orbit of Capella, H. M. Reese, 263; Observations of the

Spectrum of Nova Persei, W. W. Campbell and W. H. Wright,

269; Note on the Spectrum of Nova Persei, Joel Stebbins, 292;

Changes in the Nebulosity about Nova Persei, G. W. Ritchey,

293.

234

NUMBER V.

A RUDE ATTEMPT TO DETERMINE THE TOTAL LIGHT OF ALL THE

STARS. Simon Newcomb

-

297

SPECTRAL PHENOMENA CONNECTED WITH THE COOLING OF VERY

HOT STARS. H. Kayser

313

ON DRIFT IN LONGITUDE OF GROUPS OF FACULE ON THE SUN'S

SURFACE. A. L. Cortie

317

SOME NEW PECULIARITIES IN THE STRUCTURE OF THE CYANOGEN

BANDS. A. S. King

323