Alternate Definitions for S stars

A red giant of spectral type S whose spectrum is dominated by molecular bands arising from zirconium oxide (ZrO). S stars also have strong cyanogen bands and contain spectral lines of lithium and technetium. Almost all S stars are long-period variables.

A red giant of spectral type S whose spectrum is dominated by molecular bands arising from zirconium oxide (ZrO). S stars also have strong cyanogen bands and contain spectral lines of lithium and technetium. Almost all S stars are long-period variables.

A red giant of spectral type S whose spectrum is dominated by molecular bands arising from zirconium oxide (ZrO). S stars also have strong cyanogen bands and contain spectral lines of lithium and technetium. Almost all S stars are long-period variables.

A red giant of spectral type S whose spectrum is dominated by molecular bands arising from zirconium oxide (ZrO). S stars also have strong cyanogen bands and contain spectral lines of lithium and technetium. Almost all S stars are long-period variables.

A red giant of spectral type S whose spectrum is dominated by molecular bands arising from zirconium oxide (ZrO). S stars also have strong cyanogen bands and contain spectral lines of lithium and technetium. Almost all S stars are long-period variables.

A red giant of spectral type S whose spectrum is dominated by molecular bands arising from zirconium oxide (ZrO). S stars also have strong cyanogen bands and contain spectral lines of lithium and technetium. Almost all S stars are long-period variables.