Note 730 — Chapter XXIII · PECULIAR AND IRREGULAR VARIABLES.
Reading edition
Miss Cannon found indications, in the spectrum of η Carinæ, of a composite origin from a solar, and a bright-line helium star. Harvard Annals, vol. xxviii. p. 175. Sir David Gill recorded numerous spectral coincidences between the southern variable and Nova Aurigæ. Monthly Notices, vol. lxi. p. 456.