Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers
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Published:2022
Issue:205
Volume:
Page:33-43
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ISSN:1450-698X
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Container-title:Serbian Astronomical Journal
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language:en
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Short-container-title:SERBIAN ASTRON J
Affiliation:
1. University of Belgrade, Department of Astronomy at Faculty of Mathematics, Belgrade, Serbia
Abstract
Stellar streams and shells are observed in halos of spiral galaxies. In this
paper, we investigated the formation of these structures due to mergers
between the host spiral galaxy and its dwarf satellite galaxies. We run the
N-body simulations with two morphological models of a dwarf galaxy for
different initial positions. One model is a spheroidal dwarf, dSph, and the
other is a dwarf with a disk. We found that both models form stellar shells
and streams and, in the case of the progenitor with a disk, streams are more
prominent. After several pericentric passages, there is a possibility of
formation of several streams. The remnant of the progenitor is more likely
to disrupt later into the merger in the case of spiral progenitor than in
the case of dSph.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Subject
Astronomy and Astrophysics
Reference39 articles.
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