Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395
Black-hole-driven outflows in galaxies hosting active galactic nuclei (AGN) may interact with their interstellar medium (ISM) affecting star formation (SF). Such feedback processes, reminiscent of those seen in massive galaxies, have been reported recently in some dwarf galaxies. However, such studi...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad0c57 |
| _version_ | 1797392776203075584 |
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| author | Payel Nandi C. S. Stalin D. J. Saikia Rogemar A. Riffel Arijit Manna Sabyasachi Pal O. L. Dors Dominika Wylezalek Vaidehi S. Paliya Payaswini Saikia Pratik Dabhade Markus-Kissler Patig Ram Sagar |
| author_facet | Payel Nandi C. S. Stalin D. J. Saikia Rogemar A. Riffel Arijit Manna Sabyasachi Pal O. L. Dors Dominika Wylezalek Vaidehi S. Paliya Payaswini Saikia Pratik Dabhade Markus-Kissler Patig Ram Sagar |
| author_sort | Payel Nandi |
| collection | DOAJ |
| description | Black-hole-driven outflows in galaxies hosting active galactic nuclei (AGN) may interact with their interstellar medium (ISM) affecting star formation (SF). Such feedback processes, reminiscent of those seen in massive galaxies, have been reported recently in some dwarf galaxies. However, such studies have usually been on kiloparsec and larger scales and our knowledge of the smallest spatial scales to which these feedback processes can operate is unclear. Here we demonstrate radio jet−ISM interaction on the scale of an asymmetric triple radio structure of ∼10 pc size in NGC 4395. This triple radio structure is seen in the 15 GHz continuum image and the two asymmetric jet-like structures are situated on either side of the radio core that coincides with the optical Gaia position. The high-resolution radio image and the extended [O iii ] λ 5007 emission, indicative of an outflow, are spatially coincident and are consistent with the interpretation of a low-power radio jet interacting with the ISM. Modelling of the spectral lines using MAPPINGS , and estimation of temperature using optical integral field spectroscopic data suggest shock ionization of the gas. The continuum emission at 237 GHz, though weak, was found to spatially coincide with the AGN. However, the CO(2−1) line emission was found to be displaced by around 20 pc northward of the AGN core. The spatial coincidence of molecular H _2 λ 2.4085 along the jet direction, the morphology of ionized [O iii ] λ 5007, and displacement of the CO(2−1) emission argues for conditions less favorable for SF in the central ∼10 pc region. |
| first_indexed | 2024-03-08T23:52:24Z |
| format | Article |
| id | doaj.art-0cef3757c123491e93570f12b7d8f839 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-08T23:52:24Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-0cef3757c123491e93570f12b7d8f8392023-12-13T09:36:50ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01959211610.3847/1538-4357/ad0c57Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395Payel Nandi0https://orcid.org/0009-0003-9765-3517C. S. Stalin1https://orcid.org/0000-0002-4998-1861D. J. Saikia2https://orcid.org/0000-0002-4464-8023Rogemar A. Riffel3https://orcid.org/0000-0003-0483-3723Arijit Manna4https://orcid.org/0000-0001-9133-3465Sabyasachi Pal5https://orcid.org/0000-0003-2325-8509O. L. Dors6Dominika Wylezalek7https://orcid.org/0000-0003-2212-6045Vaidehi S. Paliya8https://orcid.org/0000-0001-7774-5308Payaswini Saikia9https://orcid.org/0000-0002-5319-6620Pratik Dabhade10Markus-Kissler Patig11https://orcid.org/0000-0002-5908-1488Ram Sagar12https://orcid.org/0000-0003-4973-4745Joint Astronomy Programme, Department of Physics, Indian Institute of Science , Bangalore 560012, India ; payel.nandi@iiap.res.in; Indian Institute of Astrophysics , Block II, Koramangala, Bangalore 560034, IndiaIndian Institute of Astrophysics , Block II, Koramangala, Bangalore 560034, India Inter-University Centre for Astronomy and Astrophysics (IUCAA) , SPPU Campus, Pune 411007, IndiaDepartamento de Física, CCNE, Universidade Federal de Santa Maria , 97105-900, Santa Maria, RS, BrazilMidnapore City College , Kuturia, Bhadutala, Paschim Medinipur, West Bengal, 721129, IndiaMidnapore City College , Kuturia, Bhadutala, Paschim Medinipur, West Bengal, 721129, IndiaUNIVAP—Universidade do Vale do Paraíba. Av. Shishima Hifumi , 2911, CEP: 12244-000 São José dos Campos, SP, BrazilAstronomisches Rechen-Institut, Zentrum fur Astronomie der Universitat Heidelberg , Monchhofstr. 12-14, D-69120 Heidelberg, Germany Inter-University Centre for Astronomy and Astrophysics (IUCAA) , SPPU Campus, Pune 411007, IndiaCenter for Astro, Particle and Planetary Physics, New York University Abu Dhabi , P.O. Box 129188, Abu Dhabi, UAEInstituto de Astrofísica de Canarias , Calle Vía Láctea, s/n, E-38205, La Laguna, Tenerife, SpainESA—ESAC - European Space Agency , Camino Bajo del Castillo s/n, E-28692 Villafranca del Castillo, Madrid, SpainIndian Institute of Astrophysics , Block II, Koramangala, Bangalore 560034, IndiaBlack-hole-driven outflows in galaxies hosting active galactic nuclei (AGN) may interact with their interstellar medium (ISM) affecting star formation (SF). Such feedback processes, reminiscent of those seen in massive galaxies, have been reported recently in some dwarf galaxies. However, such studies have usually been on kiloparsec and larger scales and our knowledge of the smallest spatial scales to which these feedback processes can operate is unclear. Here we demonstrate radio jet−ISM interaction on the scale of an asymmetric triple radio structure of ∼10 pc size in NGC 4395. This triple radio structure is seen in the 15 GHz continuum image and the two asymmetric jet-like structures are situated on either side of the radio core that coincides with the optical Gaia position. The high-resolution radio image and the extended [O iii ] λ 5007 emission, indicative of an outflow, are spatially coincident and are consistent with the interpretation of a low-power radio jet interacting with the ISM. Modelling of the spectral lines using MAPPINGS , and estimation of temperature using optical integral field spectroscopic data suggest shock ionization of the gas. The continuum emission at 237 GHz, though weak, was found to spatially coincide with the AGN. However, the CO(2−1) line emission was found to be displaced by around 20 pc northward of the AGN core. The spatial coincidence of molecular H _2 λ 2.4085 along the jet direction, the morphology of ionized [O iii ] λ 5007, and displacement of the CO(2−1) emission argues for conditions less favorable for SF in the central ∼10 pc region.https://doi.org/10.3847/1538-4357/ad0c57Dwarf galaxiesActive galactic nucleiRadio jetsAGN host galaxies |
| spellingShingle | Payel Nandi C. S. Stalin D. J. Saikia Rogemar A. Riffel Arijit Manna Sabyasachi Pal O. L. Dors Dominika Wylezalek Vaidehi S. Paliya Payaswini Saikia Pratik Dabhade Markus-Kissler Patig Ram Sagar Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395 The Astrophysical Journal Dwarf galaxies Active galactic nuclei Radio jets AGN host galaxies |
| title | Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395 |
| title_full | Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395 |
| title_fullStr | Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395 |
| title_full_unstemmed | Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395 |
| title_short | Evidence for Low-power Radio Jet–ISM Interaction at 10 pc in the Dwarf AGN Host NGC 4395 |
| title_sort | evidence for low power radio jet ism interaction at 10 pc in the dwarf agn host ngc 4395 |
| topic | Dwarf galaxies Active galactic nuclei Radio jets AGN host galaxies |
| url | https://doi.org/10.3847/1538-4357/ad0c57 |
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