A DIGITAL SPECTRAL CLASSIFICATION ATLAS

R. O. Gray


Dept. of Physics and Astronomy
Appalachian State University
v. 1.02


Table of Contents

Introduction The Main Sequence O4 - O9
Wolf-Rayet Stars Luminosity Effects at O7
Luminosity Effects at O9 The Main Sequence O9 - B5
Luminosity Effects at B1 Helium-Strong B-Type Stars
Helium-Weak B-Type Stars Luminosity Effects at B5
The Main Sequence B5 - A5 Luminosity Effects at A0
Peculiar Stars Near A0 The lambda Boötis Stars
Metallic-Line A-Type Stars Herbig Ae (Emission-Line) Stars
The Main Sequence A5 - G0 Luminosity Effects at F0
Luminosity Effects at F5 Metal-Weak F-Type Stars
Main Sequence G0 - K5 Luminosity Effects at G0
Luminosity Effects at G8 Main Sequence K5 - M4.5
Luminosity Effects at M2 An M-Giant Temperature Sequence
Giants with Unusual G-Band and Cn-Band Strengths More lAte G-Giants with Abundance Peculiarities
Emission Lines in Mira Variable Stars Two Carbon Stars
Two S-Type Stars Unusual Stellar Spectra I: The Spectra of Three Highly Evolved Stars
Unusual Stellar Spectra II: A Helium-Rich O Subdwarf Unusual Stellar Spectra III: Two Emission-Line Stars
Unusual Stellar Spectra IV: Three Bright Supernovae of 1998

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