Volume 415, Number 1, February III 2004
|Page(s)||19 - 25|
|Published online||03 February 2004|
The very local Hubble flow: Computer simulations of dynamical history
Sternberg Astronomical Institute, Moscow University, Moscow 119899, Russia
2 Tuorla Observatory, Turku University, Piikkiö 21 500, Finland
3 Astronomy Division, University of Oulu, 90014, Finland
4 Special Astrophysical Observatory, Nizhnii Arkhys 369167, Russia
5 University of West Indies, Trinidad and Tobago
6 Isaac Newton Institute of Chile, SAO Branch, Russia
Accepted: 30 September 2003
The phenomenon of the very local (≤3 Mpc) Hubble flow is studied on the basis of the data of recent precision observations. A set of computer simulations is performed to trace the trajectories of the flow galaxies back in time to the epoch of the formation of the Local Group. It is found that the “initial conditions” of the flow are drastically different from the linear velocity-distance relation. The simulations enable one also to recognize the major trends of the flow evolution and identify the dynamical role of universal antigravity produced by the cosmic vacuum.
Key words: galaxies: Local Group
© ESO, 2004
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