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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.02497 |
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| _version_ | 1866915137259044864 |
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| author | Ledger, Blake Wilson, Christine D. Klimi, Osvald Torres-Alba, Nuria Saito, Toshiki |
| author_facet | Ledger, Blake Wilson, Christine D. Klimi, Osvald Torres-Alba, Nuria Saito, Toshiki |
| contents | We use the CN/CO intensity ratio to obtain the dense gas fraction, $f_{\text{dense}}$, for a sample of 16 Ultra-luminous and Luminous Infrared Galaxies and compare $f_{\text{dense}}$ with a suite of global galaxy properties. We find a significant correlation between $f_{\text{dense}}$ and star formation rate calculated using both infrared luminosities and radio continuum, although there is significant scatter in each relation. We find no trend between global or peak $f_{\text{dense}}$ and merger stage. We find no correlation between global $f_{\text{dense}}$ and X-ray luminosity; however, the correlation becomes significant when we measure $f_{\text{dense}}$ at the location of peak X-ray emission. Our interpretation is that the dense gas is co-localized with strong X-ray emission from an active galactic nuclei or strong central star formation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_02497 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Building on the archives: Connecting the CN/CO intensity ratio with global galaxy properties in nearby U/LIRGs Ledger, Blake Wilson, Christine D. Klimi, Osvald Torres-Alba, Nuria Saito, Toshiki Astrophysics of Galaxies We use the CN/CO intensity ratio to obtain the dense gas fraction, $f_{\text{dense}}$, for a sample of 16 Ultra-luminous and Luminous Infrared Galaxies and compare $f_{\text{dense}}$ with a suite of global galaxy properties. We find a significant correlation between $f_{\text{dense}}$ and star formation rate calculated using both infrared luminosities and radio continuum, although there is significant scatter in each relation. We find no trend between global or peak $f_{\text{dense}}$ and merger stage. We find no correlation between global $f_{\text{dense}}$ and X-ray luminosity; however, the correlation becomes significant when we measure $f_{\text{dense}}$ at the location of peak X-ray emission. Our interpretation is that the dense gas is co-localized with strong X-ray emission from an active galactic nuclei or strong central star formation. |
| title | Building on the archives: Connecting the CN/CO intensity ratio with global galaxy properties in nearby U/LIRGs |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2502.02497 |