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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/008/01/0017-0031

    • Keywords

       

      stellar systems; tidal encounters—stellar dynamics

    • Abstract

       

      N-Body simulations have been performed to study the tidal effects of a primary stellar system on a secondary stellar system of density close to the Roche density. Two hyperbolic, one parabolic and one elliptic encounters have been simulated. The changes in energy, angular momentum, mass distribution, and shape of the secondary system have been determined in each case. The inner region containing about 40 per cent of the mass was found to be practically unchanged and the mass exterior to the tidal radius was found to escape. The intermediate region showed tidal distension. The thickness of this region decreased as we went from hyperbolic encounters to the elliptic encounter keeping the distance of closest approach constant. The numerical results for the fractional change in energy have been compared with the predictions of the available analytic formulae and the usefulness and limitations of the formulae have been discussed.

    • Author Affiliations

       

      P. Devadas Rao1 2 N. Ramamani1 Saleh Mohammed Alladin3 1

      1. Centre of Advanced Study in Astronomy, Osmania University, Hyderabad - 500007
      2. Department of Mathematics, M.G.M. College, Udupi
      3. International Centre for Theoretical Physics, Trieste - 34100, Italy

    • Dates

       
      Published
      March 1987
      Manuscript received
      1 August 1986
      Accepted
      17 November 1986

  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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