Dust beyond the torus: Revealing the mid-infrared heart of local Seyfert ESO 428-G14 with JWST/MIRI
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arXiv
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| Natura: | Preprint |
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2024
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| author | Haidar, Houda Rosario, David J. Alonso-Herrero, Almudena Pereira-Santaella, Miguel García-Bernete, Ismael Campbell, Stephanie Hönig, Sebastian F. Almeida, Cristina Ramos Hicks, Erin Delaney, Daniel Davies, Richard Ricci, Claudio Harrison, Chris M. Leist, Mason Lopez-Rodriguez, Enrique Garcia-Burillo, Santiago Zhang, Lulu Packham, Chris Gandhi, Poshak Audibert, Anelise Bellocchi, Enrica Boorman, Peter Bunker, Andrew Combes, Françoise Santos, Tanio Diaz Donnan, Fergus R. Martin, Omaira Gonzalez Muñoz, Laura Hermosa Charidis, Matthaios Labiano, Alvaro Levenson, Nancy A. May, Daniel Rigopoulou, Dimitra Ardila, Alberto Rodriguez Shimizu, T. Taro Stalevski, Marko Ward, Martin |
| author_facet | Haidar, Houda Rosario, David J. Alonso-Herrero, Almudena Pereira-Santaella, Miguel García-Bernete, Ismael Campbell, Stephanie Hönig, Sebastian F. Almeida, Cristina Ramos Hicks, Erin Delaney, Daniel Davies, Richard Ricci, Claudio Harrison, Chris M. Leist, Mason Lopez-Rodriguez, Enrique Garcia-Burillo, Santiago Zhang, Lulu Packham, Chris Gandhi, Poshak Audibert, Anelise Bellocchi, Enrica Boorman, Peter Bunker, Andrew Combes, Françoise Santos, Tanio Diaz Donnan, Fergus R. Martin, Omaira Gonzalez Muñoz, Laura Hermosa Charidis, Matthaios Labiano, Alvaro Levenson, Nancy A. May, Daniel Rigopoulou, Dimitra Ardila, Alberto Rodriguez Shimizu, T. Taro Stalevski, Marko Ward, Martin |
| contents | Polar dust has been discovered in a number of local Active Galactic Nuclei (AGN), with radiation-driven torus models predicting a wind to be its main driver. However, little is known about its characteristics, spatial extent, or connection to the larger scale outflows. We present the first JWST/MIRI study aimed at imaging polar dust by zooming onto the centre of ESO 428-G14, part of the Galaxy Activity, Torus, and Outflow Survey (GATOS) survey of local AGN. We detect extended mid-infrared (MIR) emission within 200 pc from the nucleus. This polar structure is co-linear with a radio jet and lies perpendicular to a molecular gas lane that feeds and obscures the nucleus. Its morphology bears a striking resemblance to that of gas ionised by the AGN in the narrow-line region. We demonstrate that part of this spatial correspondence is due to contamination within the JWST filter bands from strong emission lines. Correcting for the contamination, we find the morphology of the dust continuum to be more compact, though still clearly extended out to ~ 100 pc. We estimate the emitting dust has a temperature of ~ 120 K. Using simple models, we find that the heating of small dust grains by the radiation from the central AGN and/or radiative jet-induced shocks is responsible for the extended MIR emission. Radiation-driven dusty winds from the torus is unlikely to be important. This has important implications for scales to which AGN winds can carry dust and dense gas out into their host galaxies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_16100 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dust beyond the torus: Revealing the mid-infrared heart of local Seyfert ESO 428-G14 with JWST/MIRI Haidar, Houda Rosario, David J. Alonso-Herrero, Almudena Pereira-Santaella, Miguel García-Bernete, Ismael Campbell, Stephanie Hönig, Sebastian F. Almeida, Cristina Ramos Hicks, Erin Delaney, Daniel Davies, Richard Ricci, Claudio Harrison, Chris M. Leist, Mason Lopez-Rodriguez, Enrique Garcia-Burillo, Santiago Zhang, Lulu Packham, Chris Gandhi, Poshak Audibert, Anelise Bellocchi, Enrica Boorman, Peter Bunker, Andrew Combes, Françoise Santos, Tanio Diaz Donnan, Fergus R. Martin, Omaira Gonzalez Muñoz, Laura Hermosa Charidis, Matthaios Labiano, Alvaro Levenson, Nancy A. May, Daniel Rigopoulou, Dimitra Ardila, Alberto Rodriguez Shimizu, T. Taro Stalevski, Marko Ward, Martin Astrophysics of Galaxies Polar dust has been discovered in a number of local Active Galactic Nuclei (AGN), with radiation-driven torus models predicting a wind to be its main driver. However, little is known about its characteristics, spatial extent, or connection to the larger scale outflows. We present the first JWST/MIRI study aimed at imaging polar dust by zooming onto the centre of ESO 428-G14, part of the Galaxy Activity, Torus, and Outflow Survey (GATOS) survey of local AGN. We detect extended mid-infrared (MIR) emission within 200 pc from the nucleus. This polar structure is co-linear with a radio jet and lies perpendicular to a molecular gas lane that feeds and obscures the nucleus. Its morphology bears a striking resemblance to that of gas ionised by the AGN in the narrow-line region. We demonstrate that part of this spatial correspondence is due to contamination within the JWST filter bands from strong emission lines. Correcting for the contamination, we find the morphology of the dust continuum to be more compact, though still clearly extended out to ~ 100 pc. We estimate the emitting dust has a temperature of ~ 120 K. Using simple models, we find that the heating of small dust grains by the radiation from the central AGN and/or radiative jet-induced shocks is responsible for the extended MIR emission. Radiation-driven dusty winds from the torus is unlikely to be important. This has important implications for scales to which AGN winds can carry dust and dense gas out into their host galaxies. |
| title | Dust beyond the torus: Revealing the mid-infrared heart of local Seyfert ESO 428-G14 with JWST/MIRI |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2404.16100 |