Mapping the excitation mechanisms in the LINER I active galactic nucleus NGC 5005 : positive feedback and a thin LINER cocoon

2025
journal article
article
dc.abstract.enWe present a spatially resolved Baldwin–Phillips–Terlevich analysis of the narrow-line region (NLR) in the low-ionization nuclear emission-line region (LINER) I galaxy NGC 5005 using Hubble Space Telescope narrowband imaging of [O $_{III}$]λ5007, Hβ, Hα, and [S $_{II}$]λλ6717,6731. With a resolution of ≲ $0.^{''}1$ (≲10 pc at z = 0.003), we dissect the NLR into H ii (star-forming), Seyfert, and LINERs across spatial scales extending up to r ∼ 8 kpc from the nucleus. Our results reveal a compact nuclear region exhibiting Seyfert-like emission, consistent with photoionization by a low-luminosity active galactic nucleus (AGN). Surrounding this Seyfert-like nucleus is a thin (∼20 pc thick) higher-excitation LINER-like cocoon, likely arising from shock-excited gas in the interstellar medium (ISM). Beyond this cocoon, a centrally localized extended (r ∼ 1 kpc) LINER-like region surrounds the Seyfert-like nucleus and cocoon, likely ionized by the AGN, while a more extended (r ≳ 2 kpc) LINER-like zone may be ionized by a combination of post-AGB stars and shocks from gas inflows. We also detect H $_{II}$–like regions at both small and large scales. In the inner 500 pc, these regions may be triggered by jet–ISM interactions, potentially inducing localized star formation. At r ∼ 4 kpc, we identify an outer H $_{II}$–like region tracing a large-scale star-forming ring, where ionization is dominated by young stars.
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.authorTrindade Falcão, Anna
dc.contributor.authorFabbiano, G.
dc.contributor.authorElvis, M.
dc.contributor.authorZhu, P.
dc.contributor.authorKraemer, S.
dc.contributor.authorMaksym, W. P.
dc.contributor.authorMiddei, R.
dc.contributor.authorKról, Dominika - 261432
dc.date.accessioned2025-07-24T08:42:38Z
dc.date.available2025-07-24T08:42:38Z
dc.date.createdat2025-07-16T09:02:23Zen
dc.date.issued2025
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number2
dc.description.versionostateczna wersja wydawcy
dc.description.volume986
dc.identifier.articleid175
dc.identifier.doi10.3847/1538-4357/addc64
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.projectDRC AI
dc.identifier.urihttps://ruj.uj.edu.pl/handle/item/558151
dc.languageeng
dc.language.containereng
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.typeotwarte czasopismo
dc.subtypeArticle
dc.titleMapping the excitation mechanisms in the LINER I active galactic nucleus NGC 5005 : positive feedback and a thin LINER cocoon
dc.title.journalAstrophysical Journal
dc.typeJournalArticle
dspace.entity.typePublicationen
dc.abstract.en
We present a spatially resolved Baldwin–Phillips–Terlevich analysis of the narrow-line region (NLR) in the low-ionization nuclear emission-line region (LINER) I galaxy NGC 5005 using Hubble Space Telescope narrowband imaging of [O $_{III}$]λ5007, Hβ, Hα, and [S $_{II}$]λλ6717,6731. With a resolution of ≲ $0.^{''}1$ (≲10 pc at z = 0.003), we dissect the NLR into H ii (star-forming), Seyfert, and LINERs across spatial scales extending up to r ∼ 8 kpc from the nucleus. Our results reveal a compact nuclear region exhibiting Seyfert-like emission, consistent with photoionization by a low-luminosity active galactic nucleus (AGN). Surrounding this Seyfert-like nucleus is a thin (∼20 pc thick) higher-excitation LINER-like cocoon, likely arising from shock-excited gas in the interstellar medium (ISM). Beyond this cocoon, a centrally localized extended (r ∼ 1 kpc) LINER-like region surrounds the Seyfert-like nucleus and cocoon, likely ionized by the AGN, while a more extended (r ≳ 2 kpc) LINER-like zone may be ionized by a combination of post-AGB stars and shocks from gas inflows. We also detect H $_{II}$–like regions at both small and large scales. In the inner 500 pc, these regions may be triggered by jet–ISM interactions, potentially inducing localized star formation. At r ∼ 4 kpc, we identify an outer H $_{II}$–like region tracing a large-scale star-forming ring, where ionization is dominated by young stars.
dc.affiliation
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.author
Trindade Falcão, Anna
dc.contributor.author
Fabbiano, G.
dc.contributor.author
Elvis, M.
dc.contributor.author
Zhu, P.
dc.contributor.author
Kraemer, S.
dc.contributor.author
Maksym, W. P.
dc.contributor.author
Middei, R.
dc.contributor.author
Król, Dominika - 261432
dc.date.accessioned
2025-07-24T08:42:38Z
dc.date.available
2025-07-24T08:42:38Z
dc.date.createdaten
2025-07-16T09:02:23Z
dc.date.issued
2025
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.number
2
dc.description.version
ostateczna wersja wydawcy
dc.description.volume
986
dc.identifier.articleid
175
dc.identifier.doi
10.3847/1538-4357/addc64
dc.identifier.eissn
1538-4357
dc.identifier.issn
0004-637X
dc.identifier.project
DRC AI
dc.identifier.uri
https://ruj.uj.edu.pl/handle/item/558151
dc.language
eng
dc.language.container
eng
dc.rights
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subtype
Article
dc.title
Mapping the excitation mechanisms in the LINER I active galactic nucleus NGC 5005 : positive feedback and a thin LINER cocoon
dc.title.journal
Astrophysical Journal
dc.type
JournalArticle
dspace.entity.typeen
Publication
Affiliations

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