AGN feedback and star formation in the peculiar galaxy NGC 232: insights from VLT-MUSE observations

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dc.contributor.authorSouza, José Henrique Costa
dc.contributor.authorRiffel, Rogemar A.
dc.contributor.authorDors Junior, Oli Luiz
dc.contributor.authorRiffel, Rogério
dc.contributor.authorPoppe, Paulo César da Rocha
dc.date.accessioned2025-02-11T17:42:07Z
dc.date.available2025-02-11T17:42:07Z
dc.date.issued22023
dc.description.abstractWe use VLT-MUSE integral field unit data to study the ionized gas physical properties and kinematics as well as the stellar populations of the Seyfert 2 galaxy NGC 232 as an opportunity to understand the role of AGN feedback on star formation. The data cover a field of view of 60 × 60 arcsec2 at a spatial resolution of ∼850 pc. The emission-line profiles have been fitted with two Gaussian components, one associated to the emission of the gas in the disc and the other due to a bi-conical outflow. The spectral synthesis suggests a predominantly old stellar population with ages exceeding 2 Gyr, with the largest contributions seen at the nucleus and decreasing outwards. Meanwhile, the young and intermediate age stellar populations exhibit a positive gradient with increasing radius and a circum-nuclear star-forming ring with radius of ∼0.5 kpc traced by stars younger than 20 Myr, is observed. This, along with the fact that AGN and SF dominated regions present similar gaseous oxygen abundances, suggests a shared reservoir feeding both star formation and the AGN. We have estimated a maximum outflow rate in ionized gas of ∼1.26 M yr−1 observed at a distance of ∼560 pc from the nucleus. The corresponding maximum kinetic power of the outflow is ∼3.4 × 1041 erg s−1. This released energy could be sufficient to suppress star formation within the ionization cone, as evidenced by the lower star formation rates observed in this region.
dc.description.physical14 p.
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.uriCAPES (001) CNPq (400944/2023-5; 404238/2021-1) FAPESP/SECTI N.012/2022 (5017/2022)
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade Federal de Santa Maria
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationUniversidade Federal do Rio Grande do Sul
dc.identifier.affiliationInstituto de Astrofísica de Canarias
dc.identifier.affiliationUniversidade Estadual de Feira de Santana
dc.identifier.bibliographicCitationSOUZA, José Henrique Costa et al. AGN feedback and star formation in the peculiar galaxy NGC 232: insights from VLT-MUSE observations. Monthly Notices of the Royal Astronomical Society, v. 527, n. 3, p. 9192-9205, 2023. Disponível em: https://academic.oup.com/mnras/article/527/3/9192/7468137.
dc.identifier.doi10.1093/mnras/stad3809
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/564
dc.language.isoen_US
dc.publisherRoyal Astronomical Society
dc.rights.holderJosé Henrique Costa-Souza
dc.rights.holderRogemar A Riffel
dc.subject.keywordGalaxies
dc.subject.keywordGalaxies: ISM
dc.subject.keywordGalaxies: jets
dc.subject.keywordGalaxies: kinematics and dynamics
dc.titleAGN feedback and star formation in the peculiar galaxy NGC 232: insights from VLT-MUSE observations
dc.typeArtigos de Periódicos

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