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1. Stars
2. Atoms and spectra
3. The spectral sequence
4. The M stars: red supergiants to dwarfs
5. Descending the staircase: class L
6. The wet basement: class T
7. The K stars: orange giants and brighter dwarfs
8. Our Sun and its cousins: the G stars
9. Class F: stars in transition
10. The white stars of class A
11. The B stars: beacons of the skies
12. Class O: the head of the spectral sequence
13. Extraordinary classes
14. Journeys on the HR diagram

Star index
Subject index.

Stellar spectroscopy is the fundamental tool for investigating the natures of stars and is central to our understanding of modern astronomy and astrophysics. Revised and expanded, the second edition of this popular book provides a unique and thorough introduction to stellar spectra. It begins by introducing the reader to the fundamental properties of stars and the formation of spectra, before proceeding to the concept and history of stellar classification. The following chapters each look at a different star type: starting with cool M, the discussion extends to cover new stellar classes L and T, before advancing through type O to finish with extraordinary classes. The book concludes with a skilful integration of all the data, tracing the evolution of stars and their place in the Universe. With modern digital spectra and updates from two decades of astronomical discoveries, this accessible text is invaluable for both amateur astronomers and students.