Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'488'730
Articles rated: 2609

29 March 2024
 
  » arxiv » astro-ph/9709161

 Article overview


Tidal Shocking by Extended Mass Distributions
Oleg Y. Gnedin ; Lars Hernquist ; Jeremiah P. Ostriker ;
Date 17 Sep 1997
Journal Astrophys.J. 582 (2003) 141-161
Subject astro-ph
AffiliationPrinceton), Lars Hernquist (UC Santa Cruz), Jeremiah P. Ostriker (Princeton
AbstractWe derive expressions for the tidal field exerted by a spherically symmetric galaxy having an extended mass distribution, and use our analysis to calculate tidal perturbations and heating of stars in a globular cluster or a satellite galaxy orbiting in the external potential. We consider a Hernquist model and several power-law models for the primary. We integrate the tidal force over accurate orbits in the given potential by using the impulse approximation and by introducing adiabatic corrections that allow for the time variation of the force. We compare these results with the conventional straight path approximation. We also check the results with direct N-body simulations and find very good agreement. Heating on highly eccentric orbits dominates as the adiabatic corrections strongly damp the energy change on low eccentricity orbits. The results are illustrated for the example of globular cluster NGC 6712. For the orbital eccentricities higher than 0.9 the future lifetime of NGC 6712 is less than 10^{10} yr. Our analysis can be used to study tidal interactions of star clusters and galaxies in a semi-analytical manner.
Source arXiv, astro-ph/9709161
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica