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  LLAMA: The MBH–σ relation of the most luminous local AGNs

Caglar, T., Burtscher, L., Brandl, B., Brinchmann, J., Davies, R. I., Hicks, E. K. S., et al. (2020). LLAMA: The MBH–σ relation of the most luminous local AGNs. Astronomy and Astrophysics, 634: A114. doi:10.1051/0004-6361/201936321.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-4E63-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-4E64-3
Genre: Journal Article

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Caglar, Turgay, Author
Burtscher, Leonard, Author
Brandl, Bernhard, Author
Brinchmann, Jarle, Author
Davies, Richard I.1, Author              
Hicks, Erin K. S., Author
Koss, Michael, Author
Lin, Ming-Yi, Author
Maciejewski, Witold, Author
Müller-Sánchez, Francisco, Author
el Rogemar, A. Ri, Author
el Rogério, Ri, Author
Rosario, David J., Author
Schartmann, Marc2, Author              
Schnorr-Müller, Allan, Author
Shimizu, T. Taro1, Author              
Storchi-Bergmann, Thaisa, Author
Veilleux, Sylvain, Author
de Xivry, Gilles Orban, Author
Bennert, Vardha N., Author
Affiliations:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              
2Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 Abstract: Context. The MBH–σ relation is considered a result of coevolution between the host galaxies and their supermassive black holes. For elliptical bulge hosting inactive galaxies, this relation is well established, but there is still discussion concerning whether active galaxies follow the same relation. Aims. In this paper, we estimate black hole masses for a sample of 19 local luminous active galactic nuclei (AGNs; LLAMA) to test their location on the MBH–σ relation. In addition, we test how robustly we can determine the stellar velocity dispersion in the presence of an AGN continuum and AGN emission lines, and as a function of signal-to-noise ratio. Methods. Supermassive black hole masses (MBH) were derived from the broad-line-based relations for Hα, Hβ, and Paβ emission line profiles for Type 1 AGNs. We compared the bulge stellar velocity dispersion (σ) as determined from the Ca II triplet (CaT) with the dispersion measured from the near-infrared CO (2-0) absorption features for each AGN and find them to be consistent with each other. We applied an extinction correction to the observed broad-line fluxes and we corrected the stellar velocity dispersion by an average rotation contribution as determined from spatially resolved stellar kinematic maps. Results. The Hα-based black hole masses of our sample of AGNs were estimated in the range 6.34 ≤ log MBH ≤ 7.75 M and the σ⋆CaT estimates range between 73 ≤ σ⋆CaT ≤ 227 km s−1. From the so-constructed MBH − σ relation for our Type 1 AGNs, we estimate the black hole masses for the Type 2 AGNs and the inactive galaxies in our sample. Conclusions. We find that our sample of local luminous AGNs is consistent with the MBH–σ relation of lower luminosity AGNs and inactive galaxies, after correcting for dust extinction and the rotational contribution to the stellar velocity dispersion.

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 Dates: 2020-02-19
 Publication Status: Published online
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1051/0004-6361/201936321
Other: LOCALID: 3222857
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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 634 Sequence Number: A114 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1