Abstract
view Abstract Citations (38) References (37) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Binary Frequency of High-Velocity Field Dwarfs as Obtained with CCD Measures Abt, Helmut A. ; Willmarth, Daryl W. Abstract Published studies of high-velocity or weak-lined dwarfs have differed in concluding that the binary frequency is either substantially lower or similar to that of Population I dwarfs. The authors therefore made a new spectroscopic study with 6 times the previous measuring accuracy of 45 high-velocity FG dwarfs. They found five spectroscopic binaries with derived orbital elements, including three previously known. The resulting frequency of spectroscopic binaries with derived orbital elements is 11%±5%, which is low relative to the 20% for Population I dwarfs. In addition, ≡9%±3% of the high-velocity dwarfs have visual companions, compared with 30% for Population I dwarfs. Publication: The Astrophysical Journal Pub Date: July 1987 DOI: 10.1086/165411 Bibcode: 1987ApJ...318..786A Keywords: Binary Stars; Charge Coupled Devices; Dwarf Stars; Radial Velocity; Stellar Motions; Globular Clusters; Orbital Elements; Astrophysics; CLUSTERS: GLOBULAR; STARS: BINARIES; STARS: HIGH-VELOCITY; STARS: VISUAL MULTIPLES; STARS: WEAK-LINE full text sources ADS | data products SIMBAD (55)
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