"As are you, O star of my skies," he called back, politely if untruthfully.
The structure of a subdwarf O star is believed to be a carbon and oxygen core surrounded by a helium burning shell.
During its main sequence, it would have been an O star with a mass of 15 to 35 M.
But that is you, O beautiful star!
O great star disappear'd - O the black murk that hides the star!
O windy star blown sideways up the sky!
They are O stars with strong magnetic fields.
O stars of heaven, that shone on me of old, as if to light me onward and upward!
It runs from the hottest blue O stars to the coolest red M stars.
O brilliant star that lights up the dawn!
