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The Journal of the Royal Astronomical Society of Canada July-August 1907: Vol 1 Iss 4 (1907)
Royal Astronomical Society of Canada · leaf 40
| 245 The Spectroscopic Binary a Draconis | +50 | | |_| | | ae’. 0 | | | | -40 | b = | 10 5 20 2s jo 35 40 45 50 $5 60 DAYS FIG. … Fig. VELOCITY CURVES OF @ DRACONIS. veeAstronomy · Scholarly Journals · Microfilm
Internet Archive · Public domain (published before 1931). Free to use for anything.
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