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  The Close AGN Reference Survey (CARS). No evidence of galaxy-scale hot outflows in two nearby AGN

Powell, M. C., Husemann, B., Tremblay, G. R., Krumpe, M., Urrutia, T., Baum, S. A., et al. (2018). The Close AGN Reference Survey (CARS). No evidence of galaxy-scale hot outflows in two nearby AGN. Astronomy and Astrophysics, 618.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-CBA8-9 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-CBA9-8
Genre: Journal Article

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https://ui.adsabs.harvard.edu/abs/2018A&A...618A..27P (Any fulltext)
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 Creators:
Powell, M. C.1, Author
Husemann, B.1, Author
Tremblay, G. R.1, Author
Krumpe, M.1, Author
Urrutia, T.1, Author
Baum, S. A.1, Author
Busch, G.1, Author
Combes, F.1, Author
Croom, S. M.1, Author
Davis, T. A.1, Author
Eckart, A.1, Author
O'Dea, C. P.1, Author
Pérez-Torres, M.1, Author
Scharwächter, J.1, Author
Smirnova-Pinchukova, I.1, Author
Urry, C. M.1, Author
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

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Free keywords: galaxies: active galaxies: evolution Astrophysics - Astrophysics of Galaxies
 Abstract:
Aims: We probe the radiatively-efficient, hot wind feedback mode in two nearby luminous unobscured (type 1) AGN from the Close AGN Reference Survey (CARS), which show intriguing kpc-scale arc-like features of extended [O III]ionized gas as mapped with VLT-MUSE. We aimed to detect hot gas bubbles that would indicate the existence of powerful, galaxy-scale outflows in our targets, HE 0227-0931 and HE 0351+0240, from deep (200 ks) Chandra observations.
Methods: By measuring the spatial and spectral properties of the extended X-ray emission and comparing with the sub kpc-scale IFU data, we are able to constrain feedback scenarios and directly test if the ionized gas is due to a shocked wind.
Results: No extended hot gas emission on kpc- scales was detected. Unless the ambient medium density is low (n H ̃ 1 cm-3 at 100 pc), the inferred upper limits on the extended X-ray luminosities are well below what is expected from theoretical models at matching AGN luminosities.
Conclusions: We conclude that the highly-ionized gas structures on kpc scales are not inflated by a hot outflow in either target, and instead are likely caused by photoionization of pre-existing gas streams of different origins. Our nondetections suggest that extended X-ray emission from an AGN-driven wind is not universal, and may lead to conflicts with current theoretical predictions. The scientific results reported in this article are based on observations made by the Chandra X-ray Observatory (PI: G. Tremblay, ID: 17700519), and on observations collected at the European Organization for Astronomical Research in the Southern Hemisphere under ESO program(s) 094.B-0345(A) (PI: B. Husemann).

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 Dates: 2018
 Publication Status: Issued
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Title: Astronomy and Astrophysics
Source Genre: Journal
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Pages: - Volume / Issue: 618 Sequence Number: - Start / End Page: - Identifier: -