Astrophys. monographs, Univ. Chicago Press (1943)

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AN ATLAS OF STELLAR SPECTRA

WITH AN OUTLINE OF SPECTRAL CLASSIFICATION

Morgan * Keenan * Kellman


Table of Contents

INTRODUCTION

THE O5-F2 STARS
The O Stars
O9.5
B0
B0.5
B1
B2
B3
B5
B8
The Spectrum of zeta Draconis
The A Stars
B9
A0
A1
A2
A3
A5
A7
F0
F2
The Peculiar A Stars
The Metallic-Line Stars
The Spectrum of lambda Bootis

THE F5-M STARS
F5
F6
F8
G0
G2
G5
G8
K0
K2
K3
K5
The M Stars

THE SUPERGIANTS OF CLASSES B8-M2

FIVE COMPOSITE SPECTRA

CONCLUSION

Plate 1: O5 - B0 Standards, Plate 2: Two Wolf-Rayet Stars,
Plate 3: Main Sequence O9 - B9, Plate 4: Supergiants O9.5 - A0,
Plate 5: Luminosity Effects at O9 Plate 6: Luminosity Effects at O9.5,

Plate 7: Luminosity Effects at B0, Plate 8: AG Pegasi = BD 11 4673,
Plate 9: Luminosity Effects at B0.5, Plate 10: Luminosity Effects at B1
Plate 11: Luminosity Effects at B2, Plate 12: The Be Stars and Phi Persei,

Plate 13: The Bnn Stars, Plate 14: P Cygni,
Plate 15: Luminosity Effects at B3 Plate 16: Luminosity Effects at B5,
Plate 17: Luminosity Effects at B8, Plate 18: The Peculiar Stars Beta Lyr and Nu Sgr,

Plate 19: Main Sequence B8 - A2, Plate 20: Supergiants A0 - F0
Plate 21: Luminosity Effects at A0, Plate 22: Main Sequence A2 - F0,
Plate 23: The "Metallic-Line Star" 63 Tauri, Plate 24: Two Peculiar A Stars,

Plate 25: Luminosity Effects at A3, Plate 26: Luminosity Effects at A5,
Plate 27: The Spectrum of 17 Leporis, Plate 28: Luminosity Effects at A7,
Plate 29: Main Sequence F0 - M2, Plate 30: Supergiants F0 - K5

Plate 31: Luminosity Effects at F0, Plate 32: The Peculiar F Stars Beta CrB and Gamma Equ,
Plate 33: The Cluster-Type Variable RR Lyrae, Plate 34: The Variable Star SU Tau,
Plate 35: Luminosity Effects at F6 Plate 36: Normal Giants F8 - K5,

Plate 37: Luminosity Effects at F8, Plate 38: High Luminosity Stars at F8,
Plate 39: The Cepheid Variable X Cygni, Plate 40: Luminosity Effects at G0
Plate 41: Luminosity Effects at G5, Plate 42: The High-Velocity Star Boss 2527,

Plate 43: The Variable Star V Vul, Plate 44: Luminosity Effects at G8,
Plate 45: The High-Velocity Star Delta Leporis Plate 46: Luminosity Effects at K0,
Plate 47: High Luminosity Stars at K1, Plate 48: Luminosity Effects at K3,

Plate 49: High Luminosity Stars at K3, Plate 50: Luminosity Effects at K5
Plate 51: The M Giant Sequence, Plate 52: The M Sequence as a Temperature Sequence,
Plate 53: Luminosity Effects in the Early M Giants, Plate 54: A Carbon Star and a Long Period Variable, Plate 55: The Banded Stars in the Visual Region

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