Stars and telescopes; a hand-book of popular astronomy founded on the 9th ed. of Lynn's Celestial motions (1901)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911 · Boston, Little, Brown · leaf 339
ll consider whether theseare in all cases wholly due to actual motion of the junction, then, as the two stars are passing athwart each otherthe lines in their combined spectrum will be single, but doubleat the quadratures, or intermediate between the conjunctions.Mizar {(Ursae Majoris) was the… … JOHANN CHRISTIAN DOPPLER (1S03-1S53) of its invisible companion is 52 days. £ Auriga; is another,with a much smaller mass and a period of four days. Also,a1 Geminorum, the larger of the two stars composing the bril-liant double star Castor, proves to be a rapid binary with a periodof only three…
Astronomy
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