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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2307.11409 |
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| _version_ | 1866929391445999616 |
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| author | Donath, Yaniv Lewandowski, Matthew Senatore, Leonardo |
| author_facet | Donath, Yaniv Lewandowski, Matthew Senatore, Leonardo |
| contents | We show that it is possible to directly measure the formation time of galaxies using large-scale structure. In particular, we show that the large-scale distribution of galaxies is sensitive to whether galaxies form over a narrow period of time before their observed times, or are formed over a time scale on the order of the age of the Universe. Along the way, we derive simple recursion relations for the perturbative terms of the most general bias expansion for the galaxy density, thus fully extending the famous dark-matter recursion relations to generic tracers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_11409 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Direct signatures of the formation time of galaxies Donath, Yaniv Lewandowski, Matthew Senatore, Leonardo Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies We show that it is possible to directly measure the formation time of galaxies using large-scale structure. In particular, we show that the large-scale distribution of galaxies is sensitive to whether galaxies form over a narrow period of time before their observed times, or are formed over a time scale on the order of the age of the Universe. Along the way, we derive simple recursion relations for the perturbative terms of the most general bias expansion for the galaxy density, thus fully extending the famous dark-matter recursion relations to generic tracers. |
| title | Direct signatures of the formation time of galaxies |
| topic | Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2307.11409 |