Abstract
view Abstract Citations (38) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A spectroscopic study of the open cluster M39. Abt, H. A. ; Sanders, W. L. Abstract M39 is found to be intermediate among open clusters in its mean stellar rotational velocity and its frequency of binaries. A study of the 15 brightest members yielded orbital elements for four spectroscopic binaries; one other star has double lines. For six well-studied clusters there is a welldefined inverse correlation between mean rotational velocity and frequency of binaries with periods less than about 10 days; if longer-period binary motion is also effective in reducing rotational velocities, then the results imply preferential inclinations for some clusters. Subject headings: binaries - open clusters - rotation, stellar Publication: The Astrophysical Journal Pub Date: November 1973 DOI: 10.1086/152486 Bibcode: 1973ApJ...186..177A full text sources ADS | data products SIMBAD (16)
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