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Binary-corrected velocity dispersions from single- and multi-epoch radial velocities: massive stars in R136 as a test case
2014
Astronomy and Astrophysics
Orbital motions from binary stars can broaden the observed line-of-sight velocity distribution of a stellar system, artificially inflating the measured line-of-sight velocity dispersion, which can in turn lead to erroneous conclusions about the dynamical state of the system. Cottaar et al. (2012b) proposed a maximum likelihood procedure to recover the intrinsic velocity dispersion of a resolved star cluster from a single epoch of radial velocity data of individual stars, which they achieved by
doi:10.1051/0004-6361/201322445
fatcat:x6l7ti5zrffbxaowai4qaingm4