Formation of galactic bulges from the cold gas filaments in high-redshift dark matter halos Article Swipe
Formation process(es) of galactic bulges are not yet clarified although several mechanisms have been proposed. In a previous study, we suggested one possibility that galactic bulges have been formed from the cold gas inflowing through surrounding hot halo gas in massive dark matter halos at high redshifts. It was shown that this scenario leads to the bulge-to-total stellar mass ratio increasing with the galaxy mass, in agreement with the well-known observed trend. We here indicate that it also reproduces recent observational results that the mean stellar age of the bulge increases with the galaxy mass while the age gradient across the bulge decreases. We infer that this formation path applies mainly to high-mass galaxies and the bulges in lower-mass galaxies have different origins such as secular formation from the disc material.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- https://doi.org/10.48550/arxiv.2112.01803
- OA Status
- green
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4200630333
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4200630333Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2112.01803Digital Object Identifier
- Title
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Formation of galactic bulges from the cold gas filaments in high-redshift dark matter halosWork title
- Type
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preprintOpenAlex work type
- Language
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enPrimary language
- Publication year
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2021Year of publication
- Publication date
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2021-12-03Full publication date if available
- Authors
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Masafumi NoguchiList of authors in order
- Landing page
-
https://doi.org/10.48550/arxiv.2112.01803Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
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https://doi.org/10.48550/arxiv.2112.01803Direct OA link when available
- Concepts
-
Bulge, Physics, Astrophysics, Galaxy, Dark matter halo, Astronomy, Dark matter, Galaxy formation and evolution, Halo, Cold dark matter, RedshiftTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
- Related works (count)
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10Other works algorithmically related by OpenAlex
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