Statistical Analysis of Dwarf Galaxies and Their Globular Clusters in the Local Volume

Although morphological classification of dwarf galaxies into early and late types can account for some of their origin and characteristics, this does not aid the study of their formation mechanism. Thus an objective classification using principal component analysis together with K means cluster anal...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal 2010-11, Vol.724 (1), p.678-jQuery1323913423583='46'
Main Authors: Chattopadhyay, Tanuka, Sharina, Margarita, Karmakar, Pradip
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CLASSIFICATION
DATA ANALYSIS
Dwarf galaxies
GALAXIES
Globular clusters
ORIGIN
Origins
Principal component analysis
Star formation
STARS
Statistical analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Although morphological classification of dwarf galaxies into early and late types can account for some of their origin and characteristics, this does not aid the study of their formation mechanism. Thus an objective classification using principal component analysis together with K means cluster analysis of these dwarf galaxies and their globular clusters (GCs) is carried out to overcome this problem. It is found that the classification of dwarf galaxies in the local volume is irrespective of their morphological indices. The more massive (M V0 < --13.7) galaxies evolve through self-enrichment and harbor dynamically less evolved younger GCs, whereas fainter galaxies (M V0 > -- 13.7) are influenced by their environment in the star formation process.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/724/1/678