Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ap.....40...25m&link_type=abstract
Astrophysics, Volume 40, Issue 1, pp.25-35
Astronomy and Astrophysics
Astrophysics
Scientific paper
The CfAl Catalog of Huchra et al. is examined for identification of groups of galaxies with the use of a variation of the percolation method previously used by Huchra and Geller. The main difference between our method and Huchra-Geller method is in the selection criterion for components. We use the value of the gravitational field potential to determine component galaxies. This approach is physically more valid than the distances between galaxies. It is shown that the selection parameters E0 and V0 need not be changed with distance to account for changes in the observed luminosity function of galaxies. Thus, it is unnecessary in our approach to use the luminosity function of galaxies for identification of groups. The dependence of the main characteristics of groups on the selection parameters is investigated. The interval of the selection parameters within which the group characteristics are least dependent on these parameters is determined. Groups of galaxies detected with any pairs of E0 and V0 values from these intervals can be considered essentially real.
No associations
LandOfFree
Groups of Galaxies. II. Determination of the Values of Selection Parameters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Groups of Galaxies. II. Determination of the Values of Selection Parameters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Groups of Galaxies. II. Determination of the Values of Selection Parameters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1785013