Published in 1978.

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REVISED MK SPECTRAL ATLAS FOR STARS EARLIER THAN THE SUN

W.W. Morgan, H.A. Abt, and J.W. Tapscott


Yerkes Observatory, University of Chicago
and
Kitt Peak National Observatory


Table of Contents

INTRODUCTION

THE REALM OF THE SPECIMENS

THE NATURE OF THE THIRD DIMENSION

THE SUI GENERIS STANDARDS

THE DEGREE OF INCOMPLETENESS OF THE MAT ATLAS MORPHOLOGY

SPECTRAL CLASSIFICATION IN GLOBULAR CLUSTERS AND IN GALAXIES

A NOTE ON CLASSIFICATION IN THE SATELLITE ULTRAVIOLET

CONCLUSION

NOTES ON ATLAS PLATES

PLATES

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