Tracing correlations between galaxy properties across the Cosmic Web: An IllustrisTNG-based study
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866908750018772992 |
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| author | Nandi, Anindita Pandey, Biswajit Sarkar, Prakash |
| author_facet | Nandi, Anindita Pandey, Biswajit Sarkar, Prakash |
| contents | We explore the impact of cosmic web environments on galaxy properties such as $(u-r)\,$colour, stellar mass, star formation rate, and stellar metallicity, using a stellar mass-matched sample of simulated galaxies from the IllustrisTNG simulation. We use Normalized Mutual Information (NMI) to quantify correlations among galaxy properties and apply Student's t-test to assess the statistical significance of their differences across cosmic web environments. In every case, the null hypothesis is rejected at $> 99.99\%$ confidence, providing strong evidence that correlations among galaxy properties are strongly dependent on cosmic web environments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_11288 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tracing correlations between galaxy properties across the Cosmic Web: An IllustrisTNG-based study Nandi, Anindita Pandey, Biswajit Sarkar, Prakash Cosmology and Nongalactic Astrophysics We explore the impact of cosmic web environments on galaxy properties such as $(u-r)\,$colour, stellar mass, star formation rate, and stellar metallicity, using a stellar mass-matched sample of simulated galaxies from the IllustrisTNG simulation. We use Normalized Mutual Information (NMI) to quantify correlations among galaxy properties and apply Student's t-test to assess the statistical significance of their differences across cosmic web environments. In every case, the null hypothesis is rejected at $> 99.99\%$ confidence, providing strong evidence that correlations among galaxy properties are strongly dependent on cosmic web environments. |
| title | Tracing correlations between galaxy properties across the Cosmic Web: An IllustrisTNG-based study |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2509.11288 |