TY - JOUR AU - Catharine Garmany AU - Peter Conti AU - P. Massey BT - The Astrophysical Journal DA - Jan-12-1980 DO - 10.1086/158537 PY - 1980 EP - 1063 T2 - The Astrophysical Journal TI - Spectroscopic studies of O type stars. IX - Binary frequency UR - http://articles.adsabs.harvard.edu/full/1980ApJ...242.1063G VL - 242 SN - 0004-637X ER -