Mid-J CO emission in nearby Seyfert galaxies
We study for the first time the complete sub-millimeter spectra (450 GHz to 1550 GHz) of a sample of nearby active galaxies observed with the SPIRE Fourier Transform Spectrometer (SPIRE/FTS) onboard Herschel. The CO ladder (from Jup = 4 to 12) is the most prominent spectral feature in this range. Th...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Conference item |
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University of Texas at San Antonio
2012
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| _version_ | 1797059008064913408 |
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| author | Pereira-Santaella, M Spinoglio, L Busquet, G Glenn, J Isaak, K Kamenetzky, J Rangwala, N Schirm, M Baes, M Barlow, M Boselli, A Cooray, A Cormier, D |
| author_facet | Pereira-Santaella, M Spinoglio, L Busquet, G Glenn, J Isaak, K Kamenetzky, J Rangwala, N Schirm, M Baes, M Barlow, M Boselli, A Cooray, A Cormier, D |
| author_sort | Pereira-Santaella, M |
| collection | OXFORD |
| description | We study for the first time the complete sub-millimeter spectra (450 GHz to 1550 GHz) of a sample of nearby active galaxies observed with the SPIRE Fourier Transform Spectrometer (SPIRE/FTS) onboard Herschel. The CO ladder (from Jup = 4 to 12) is the most prominent spectral feature in this range. These CO lines probe warm molecular gas that can be heated by ultraviolet photons, shocks, or X-rays originated in the active galactic nucleus or in young star-forming regions. In these proceedings we investigate the physical origin of the CO emission using the averaged CO spectral line energy distribution (SLED) of six Seyfert galaxies. We use a radiative transfer model assuming an isothermal homogeneous medium to estimate the molecular gas conditions. We also compare this CO SLED with the predictions of photon and X-ray dominated region (PDR and XDR) models. |
| first_indexed | 2024-03-06T19:58:08Z |
| format | Conference item |
| id | oxford-uuid:265c4db7-5c33-4b8f-95b8-d1ec077c54c4 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:58:08Z |
| publishDate | 2012 |
| publisher | University of Texas at San Antonio |
| record_format | dspace |
| spelling | oxford-uuid:265c4db7-5c33-4b8f-95b8-d1ec077c54c42022-03-26T12:00:30ZMid-J CO emission in nearby Seyfert galaxiesConference itemhttp://purl.org/coar/resource_type/c_5794uuid:265c4db7-5c33-4b8f-95b8-d1ec077c54c4Symplectic Elements at OxfordUniversity of Texas at San Antonio2012Pereira-Santaella, MSpinoglio, LBusquet, GGlenn, JIsaak, KKamenetzky, JRangwala, NSchirm, MBaes, MBarlow, MBoselli, ACooray, ACormier, DWe study for the first time the complete sub-millimeter spectra (450 GHz to 1550 GHz) of a sample of nearby active galaxies observed with the SPIRE Fourier Transform Spectrometer (SPIRE/FTS) onboard Herschel. The CO ladder (from Jup = 4 to 12) is the most prominent spectral feature in this range. These CO lines probe warm molecular gas that can be heated by ultraviolet photons, shocks, or X-rays originated in the active galactic nucleus or in young star-forming regions. In these proceedings we investigate the physical origin of the CO emission using the averaged CO spectral line energy distribution (SLED) of six Seyfert galaxies. We use a radiative transfer model assuming an isothermal homogeneous medium to estimate the molecular gas conditions. We also compare this CO SLED with the predictions of photon and X-ray dominated region (PDR and XDR) models. |
| spellingShingle | Pereira-Santaella, M Spinoglio, L Busquet, G Glenn, J Isaak, K Kamenetzky, J Rangwala, N Schirm, M Baes, M Barlow, M Boselli, A Cooray, A Cormier, D Mid-J CO emission in nearby Seyfert galaxies |
| title | Mid-J CO emission in nearby Seyfert galaxies |
| title_full | Mid-J CO emission in nearby Seyfert galaxies |
| title_fullStr | Mid-J CO emission in nearby Seyfert galaxies |
| title_full_unstemmed | Mid-J CO emission in nearby Seyfert galaxies |
| title_short | Mid-J CO emission in nearby Seyfert galaxies |
| title_sort | mid j co emission in nearby seyfert galaxies |
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