Studies on the Coma cluster. I. Determination and discussion of membership

Details Studies on the Coma cluster. I. Determination and discussion of membership Studies on the Coma cluster. I. Determination and discussion of membership

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989cha%26a..13..223z&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 13, Issue 2, p. 223-230.

Astronomy and Astrophysics

Astrophysics

Scientific paper

We propose a statistical method of determining the membership of a galaxy cluster based on the maximum likelihood principle using radial velocities. The mathematical model assumes that the radial velocity of a cluster galaxy follows a one-dimensioanl normal distribution and that of a field galaxy follows k one-dimensional normal distributions superposed on one another. Application to the Coma cluster shows the reasonableness of this model; it determines well the distributional parameters of the cluster and the membership probability of individual galaxies and the criterion for membership is effective. The best result is obtained with K= 2, that is, by separating the field galaxies into a foreground and a background distribution. We point out that, at least in the case of not too large samples, it is not advisable to take K greater than 2.

Affiliated with

Also associated with

No associations

Rating

Studies on the Coma cluster. I. Determination and discussion of membership 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 Studies on the Coma cluster. I. Determination and discussion of membership, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Studies on the Coma cluster. I. Determination and discussion of membership will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1853245