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  Searching for molecular gas inflows and outflows in the nuclear regions of five Seyfert galaxies

Domínguez-Fernández, A. J., Alonso-Herrero, A., García-Burillo, S., Davies, R. I., Usero, A., Labiano, A., et al. (2020). Searching for molecular gas inflows and outflows in the nuclear regions of five Seyfert galaxies. Astronomy and Astrophysics, 643: A127. doi:10.1051/0004-6361/201936961.

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Searching for molecular gas inflows and outflows in the nuclear regions of five Seyfert galaxies.pdf (beliebiger Volltext), 6MB
 
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Domínguez-Fernández, A. J., Autor
Alonso-Herrero, A., Autor
García-Burillo, S., Autor
Davies, R. I.1, Autor           
Usero, A., Autor
Labiano, A., Autor
Levenson, N. A., Autor
Pereira-Santaella, M., Autor
Imanishi, M., Autor
Almeida, C. Ramos, Autor
Rigopoulou, D., Autor
Affiliations:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              

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 Zusammenfassung: Active galactic nucleus (AGN) driven outflows are believed to play an important role in regulating the growth of galaxies, mostly via negative feedback. However, their effects on their hosts are far from clear, especially for low- and moderate-luminosity Seyferts. To investigate this issue, we obtained cold molecular gas observations, traced by the CO(2-1) transition, using the NOEMA interferometer of five nearby (distances between 19 and 58 Mpc) Seyfert galaxies. The resolution of ∼0.3–0.8 (∼30–100 pc) and field of view of NOEMA allowed us to study the CO(2-1) morphology and kinematics in the nuclear regions (∼100 pc) and up to radial distances of ∼900 pc. We detected CO(2-1) emission in all five galaxies with disky or circumnuclear ring-like morphologies. We derived cold molecular gas masses on nuclear (∼100 pc) and circumnuclear (∼650 pc) scales in the range from 106 to 107 M and from 107 to 108 M, respectively. In all of our galaxies, the bulk of this gas is rotating in the plane of the galaxy. However, noncircular motions are also present. In NGC 4253, NGC 4388, and NGC 7465, we can ascribe the streaming motions to the presence of a large-scale bar. In Mrk 1066 and NGC 4388, the noncircular motions in the nuclear regions are explained as outflowing material due to the interaction of the AGN wind with molecular gas in the galaxy disk. We conclude that for an unambiguous and precise interpretation of the kinematics of the cold molecular gas, we need detailed knowledge of the host galaxy (i.e., presence of bars, interactions, etc.), and also of the ionized gas kinematics and ionization cone geometry.

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Sprache(n): eng - English
 Datum: 2020-11-13
 Publikationsstatus: Online veröffentlicht
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 Identifikatoren: DOI: 10.1051/0004-6361/201936961
Anderer: LOCALID: 3286375
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Titel: Astronomy and Astrophysics
  Andere : Astron. Astrophys.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: France : EDP Sciences S A
Seiten: - Band / Heft: 643 Artikelnummer: A127 Start- / Endseite: - Identifikator: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1