A Catalog of Broad Hα and Hβ Active Galactic Nuclei in MaNGA
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| Format: | Preprint |
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2024
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| _version_ | 1866911914476437504 |
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| author | Negus, James Comerford, Julia M. Sánchez, Francisco Müller |
| author_facet | Negus, James Comerford, Julia M. Sánchez, Francisco Müller |
| contents | Broad H$α$ and H$β$ emission lines (FWHM > 1,000 km s$^{-1}$) are incredibly efficient tracers of the high-velocity clouds encircling Active Galactic Nuclei (AGN). As a result, we search for these broad line AGN in the Sloan Digital Sky Survey's Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) catalog. We identify 301 broad-line H$α$ galaxies and 801 broad-line H$β$ galaxies in the catalog. In total, we detect 1,042 unique broad-line galaxies with luminosities between 10$^{37}$ - 10$^{43}$ erg s$^{-1}$; 60 feature both broad H$α$ and broad H$β$ emission. We also determine that the broad line region radius ranges between 0.01 - 46 light days, with a median radius of 0.1 light days (0.02 pc) for our broad H$β$ sample. In addition, we find that both samples feature a higher fraction of galaxy mergers (44% for the broad H$α$ sample and 43% for the broad H$β$ sample), compared to the full MaNGA galaxy sample (26%), which suggests that merger-driven fueling is strongly active in our sample. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2405_12873 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Catalog of Broad Hα and Hβ Active Galactic Nuclei in MaNGA Negus, James Comerford, Julia M. Sánchez, Francisco Müller Astrophysics of Galaxies Broad H$α$ and H$β$ emission lines (FWHM > 1,000 km s$^{-1}$) are incredibly efficient tracers of the high-velocity clouds encircling Active Galactic Nuclei (AGN). As a result, we search for these broad line AGN in the Sloan Digital Sky Survey's Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) catalog. We identify 301 broad-line H$α$ galaxies and 801 broad-line H$β$ galaxies in the catalog. In total, we detect 1,042 unique broad-line galaxies with luminosities between 10$^{37}$ - 10$^{43}$ erg s$^{-1}$; 60 feature both broad H$α$ and broad H$β$ emission. We also determine that the broad line region radius ranges between 0.01 - 46 light days, with a median radius of 0.1 light days (0.02 pc) for our broad H$β$ sample. In addition, we find that both samples feature a higher fraction of galaxy mergers (44% for the broad H$α$ sample and 43% for the broad H$β$ sample), compared to the full MaNGA galaxy sample (26%), which suggests that merger-driven fueling is strongly active in our sample. |
| title | A Catalog of Broad Hα and Hβ Active Galactic Nuclei in MaNGA |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2405.12873 |