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Decomposition of the central structure of NGC 2273 in the NIR: a case study

The Seyfert 2 galaxy NGC 2273 is a prime target to explore how active nuclei can be fed. It has a star-forming innermost nuclear ring with a radius of 0.33kpc from where material may be funneled to the supermassive black hole in its center. In this article, we discuss high-resolution adaptive optics...

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Main Authors: Schey, Leonid (Author) , Heidt, Jochen (Author) , Pramskiy, Alexander (Author) , Thompson, D. (Author) , Agapito, G. (Author) , Esposito, S. (Author) , Gredel, Roland (Author) , Miller, D. (Author) , Pinna, E. (Author) , Puglisi, A. (Author) , Rossi, F. (Author) , Seifert, Walter (Author) , Taylor, G. (Author) , Quirrenbach, Andreas (Author)
Format: Article (Journal)
Language:English
Published: 27 November 2023
In: Astronomische Nachrichten
Year: 2023, Volume: 344, Issue: 10, Pages: 1-15
ISSN:1521-3994
DOI:10.1002/asna.20230094
Online Access:Resolving-System, kostenfrei, Volltext: https://doi.org/10.1002/asna.20230094
Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/asna.20230094
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Author Notes:L. Schey, J. Heidt, A. Pramskiy, D. Thompson, G. Agapito, S. Esposito, R. Gredel, D. Miller, E. Pinna, A. Puglisi, F. Rossi, W. Seifert, G. Taylor, A. Quirrenbach
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Summary:The Seyfert 2 galaxy NGC 2273 is a prime target to explore how active nuclei can be fed. It has a star-forming innermost nuclear ring with a radius of 0.33kpc from where material may be funneled to the supermassive black hole in its center. In this article, we discuss high-resolution adaptive optics aided JHKs images of NGC 2273 taken with the Large Binocular Telescope. Using Galfit we decomposed the innermost part of NGC 2273 into a core, a disk, and a ring using 58 parameters, 44 of them were used to describe the ring. The stellar mass of the ring was found to be 12 ×108M⊙\ \times 10^8\mathrmM_ødot \, a factor of 10 higher than its molecular gas mass. A continuous gas flow via the main stellar bar of NGC 2273 during the lifetime of the bar of up to 10 M⊙yr−1\ \mathrmM_ødot \mathrmyr^-1 \ is required to provide the fuel for the formation of the stars unless the star formation efficiency is on the order of 10%. This does not affect the fueling of the nuclear source as the amount of molecular gas required for this low-luminosity active galaxy to achieve this is on the order of 104M⊙\ 10^4\mathrmM_ødot \ only.
Item Description:Gesehen am 18.04.2024
Physical Description:Online Resource
ISSN:1521-3994
DOI:10.1002/asna.20230094

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