書誌事項
- タイトル別名
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- チョウダイ シツリョウ ブラックホール シツリョウ : バルジ シツリョウ カンケイ ノ シンカ ト ギンガ ケイセイ カテイ
- On the evolution of the supermassive black hole mass-bulge mass relation : effects of galaxy formation processes
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type:Article
In the local universe, the mass of supermassive black hole (SMBH), MBH, is proportional to the bulge mass of the host galaxy, Mbluge. We investigate effects of galaxy formation processes on the evolution of the MBH−Mbulge relation, using a semianalytic model of galaxy and SMBH formation. We find that the mass ratio MBH/Mbulge decreases with cosmic time. In our model, the mass growth processes of SMBH are cold gas accretion during starburst and SMBHs coalescence. Bulges grow from stars formed from cold gas during starbursts. Moreover, bulges also grow from stars in progenitor galaxies. Because cold gas in galaxies depleted by star formation, the amounts of cold gas accreted onto SMBH decrease with time. On the other hand, bulges grow from stars in progenitor galaxies during mergers, even at low redshifts. As a result, one should expect the MBH−Mbulge relation to evolve with cosmic time. Comparing these results with observations in a future, we can put a stringent constraint on galaxy and SMBH formation model.
identifier:0495-8012
identifier:https://repository.tku.ac.jp/dspace/handle/11150/1040
収録刊行物
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- 人文自然科学論集 = The Journal of Humanities and Natural Sciences
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人文自然科学論集 = The Journal of Humanities and Natural Sciences 133 31-41, 2012-12-05
東京経済大学人文自然科学研究会
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詳細情報 詳細情報について
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- CRID
- 1050282812464066304
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- NII論文ID
- 120005281828
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- NII書誌ID
- AN00159446
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- ISSN
- 04958012
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- NDL書誌ID
- 024198403
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
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