Migration in the shearing sheet and estimates for young open cluster migration

Research paper by Alice C. Quillen, Eric Nolting, Ivan Minchev, Gayandhi De Silva, Cristina Chiappini

Indexed on: 18 Oct '17Published on: 18 Oct '17Published in: arXiv - Astrophysics - Astrophysics of Galaxies


Using tracer particles embedded in self-gravitating shearing sheet N-body simulations, we investigate the distance in guiding center radius that stars or star clusters can migrate in a few orbital periods near the Solar neighborhood. The standard deviations of guiding center distributions and maximum migration distances depend on the Toomre or critical wavelength and the contrast in mass surface density caused by spiral structure. Comparison between our simulations and estimated guiding radii for a few young supersolar open clusters suggests that the contrast in mass surface density in the solar neighborhood has standard deviation (in the surface density distribution) divided by mean of about 1/4.