Evolution of dwarf galaxies in a semi-analytic galaxy formation model

被引：0

作者：

Nagashima, Masahiro ^{[1
]}

Enoki, Motohiro ^{[2
]}

Ishiyama, Tomoaki ^{[3
]}

Kobayashi, Masakazu A. R. ^{[4
]}

Makiya, Ryu ^{[5
]}

Ogura, Kazuyuki ^{[1
]}

Okamoto, Takashi ^{[6
]}

Okoshi, Katsuya ^{[7
]}

Oogi, Taira ^{[5
]}

Shirakata, Hikari ^{[6
]}

机构：

[1] Bunkyo Univ, Fac Educ, Koshigaya, Saitama 3438511, Japan

[2] Tokyo Keizai Univ, Fac Business Adm, Kokubunji, Tokyo 1858502, Japan

[3] Chiba Univ, Inst Management & Informat Technol, Chiba, Chiba 2638522, Japan

[4] Kure Coll, Natl Inst Technol, Fac Nat Sci, Kure, Hiroshima 7378506, Japan

[5] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan

[6] Hokkaido Univ, Grad Sch Sci, Dept Cosmosci, Sapporo, Hokkaido 0600810, Japan

[7] Tokyo Univ Sci, Oshamambe, Hokkaido 0493514, Japan

来源：

DWARF GALAXIES: FROM THE DEEP UNIVERSE TO THE PRESENT | 2019年 / 14卷 / S344期

关键词：

galaxies: dwarf; galaxies: evolution; galaxies: formation; large-scale structure of universe; INDUCED GAS REMOVAL; DYNAMICAL RESPONSE;

D O I：

10.1017/S1743921318005471

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Dwarf galaxies provide us many important clues to understanding of galaxy formation. By using the current version of our own semi-analytic model of galaxy formation, in which cosmic structure forms and evolves based on the cold dark matter model of cosmology, we analyze dwarf galaxies. We find that the model well reproduces many properties such as magnitudes, sizes, and velocity dispersions of, especially, dwarf elliptical galaxies. We also find that the dynamical response of the gravitational potential well of dwarf galaxies to the supernova-induced gas removal plays a very important role to obtain large sizes and small velocity dispersions as observed.

引用

页码：491 / 494

页数：4

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