Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (163) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (31)
· NED Objects (29)
· Associated Articles
· Also-Read Articles (Reads History)
· Translate This Page
Galaxy clusters with multiple components. I - The dynamics of Abell 98
Beers, T. C.; Geller, M. J.; Huchra, J. P.
AA(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AB(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA)
Astrophysical Journal, Part 1, vol. 257, June 1, 1982, p. 23-32. (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Dynamic Models, Galactic Clusters, Galactic Evolution, Red Shift, Velocity Distribution, Astronomical Models, Astronomical Spectroscopy, Cosmology, Line Of Sight, Star Distribution, Two Body Problem, Virial Theorem, X Ray Sources
Bibliographic Code:


The nature and evolution of rich galaxy clusters containing multiple condensations is studied. Velocities for 13 members of A98 are presented and the determination of dynamical properties of the individual subclusters is substantially improved. The application of techniques for quantifying gravitational scale lengths are stressed without invocation of the symmetry arguments demanded by the usual parameter fitting procedures. The entire A98 cluster is modeled as a two-body system. The probability that A98 is bound is found to be 98 percent. From this model and the results of previous N-body simulations, it is shown that the most likely description of the system is that it reached maximum expansion about 3.5 billion years ago and is presently in a state of collapse. The subclusters will merge in another three billion years.

Associated Articles

Part  1     Part  2    

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences

More Article Retrieval Options

HELP for Article Retrieval

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
arXiv e-prints