Location: Home>>Papers
A STUDY ON THE CHEMICAL PROPERTIES OF BLUE COMPACT DWARF GALAXIES
Author: ZHAO Yinghe
Abstract: In this paper, we report our studies on the gaseous and chemical properties of a relatively large sample ( 53 members) of blue compact dwarf galaxies (BCDs). The results of correlations among the oxygen abundance, stellar mass, gas mass, baryonic mass, and gas fraction are present both for E-and I-type BCDs, which are classified according to Loose & Thuan and show elliptical and irregular outer haloes, respectively. These correlations of I-type BCDs show slopes similar to those of E-type ones. However, in general, E-type BCDs are more gas-poor and metal-rich than I-type ones at a given baryonic mass. Based on these results, we suggest that E-type BCDs, at least a part of them, and I-type ones might be likely at different evolutionary phases and/or having different progenitors. Our investigation of the correlation between oxygen abundance and gas fraction shows that BCDs appear to have not evolved as isolated systems, but to have experienced some gas flows and/or mergers.
Contact the author:
Page number: 44-44
Issue: 1
Subject:
Authors units:
PubYear: 2013
Volume: 764
Unit code: 114332
Journal: ASTROPHYSICAL JOURNAL
The full text link:
Full papers:
Departmens of author:
Paper source:
Paper type:
Participation of the author:
ISSN: