The Physical Reality Of McConnachie compact groups of galaxies -1.

Mohamed, SabryA.

doi:10.21474/ijar01/507

IJAR

2016

DOI: 10.21474/ijar01/507

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The Physical Reality Of McConnachie compact groups of galaxies -1.

SabryA. Mohamed¹

Abstract: In this paper the tree clustering technique (The Astrophysical Euclidean Separation Coefficients) is used to test the reality of compact groups of galaxies in McConnachie et al. (2009) catalog. The method applied on the first 100 groups only. The result will reveal the membership of each galaxy and how it relates to its group. The tables of groups and their members are included.

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Statistical study of some Lee galaxy groups

Mohamed

Fouad

2017

NRIAG Journal of Astronomy and Geophysics

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Compact groups of galaxies are systems of small number of galaxies close to each other. They are a good laboratory to study galaxy properties, such as structure, morphology and evolution which are affected by the environment and galaxy interactions. We applied the tree clustering technique (the Euclidean separation distance coefficients) to test the physical reality of groups and used certain criteria (Sabry et al., 2009) depending on the physical attributes of the galaxies. The sample of the data is the quintets groups of Lee compact groups of galaxies (Lee et al., 2004). It is based on a modified version of Hickson's criteria (Hickson, 1982). The results reveal the membership of each galaxy and how it is related to its group. The tables of groups and their members are included. Our results indicates that 12 Groups are real groups with real members while 18 Groups have one galaxy that has attribute discordant and should be discarded from its group.

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Statistical study of some Lee galaxy groups

Mohamed

Fouad

2017

NRIAG Journal of Astronomy and Geophysics

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The Physical Reality Of McConnachie compact groups of galaxies -1.

Cited by 1 publication

References 5 publications

Statistical study of some Lee galaxy groups

Statistical study of some Lee galaxy groups

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