A 40-billion solar mass black hole in the extreme core of Holm 15A, the central 
galaxy of Abell 85

Kianusch, Mehrgan; Thomas, Jens; Saglia, Roberto; Mazzalay, Ximena; Erwin, Peter; Bender, Ralf; Kluge, Matthias; Fabricius, Maximilian

doi:10.3847/1538-4357/ab5856

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

A 40-billion solar mass black hole in the extreme core of Holm 15A, the central galaxy of Abell 85

MPS-Authors

/persons/resource/persons246968

Kianusch, Mehrgan
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons18435

Thomas, Jens
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons18398

Saglia, Roberto
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4907

Mazzalay, Ximena
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4690

Erwin, Peter
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4759

Bender, Ralf
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons242065

Kluge, Matthias
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

/persons/resource/persons4654

Fabricius, Maximilian
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Kianusch, M., Thomas, J., Saglia, R., Mazzalay, X., Erwin, P., Bender, R., Kluge, M., & Fabricius, M. (2019). A 40-billion solar mass black hole in the extreme core of Holm 15A, the central galaxy of Abell 85. The Astrophysical Journal, 887(2):. doi:10.3847/1538-4357/ab5856.

引用: https://hdl.handle.net/21.11116/0000-0006-1051-C

要旨

Holm 15A, the brightest cluster galaxy (BCG) of the galaxy cluster Abell 85, has an ultra-diffuse central region, ~ 2 mag fainter than the faintest depleted core of any early-type galaxy (ETG) that has been dynamically modelled in detail. We use orbit-based, axisymmetric Schwarzschild models to analyse the stellar kinematics of Holm 15A from new high-resolution, wide-field spectral observations obtained with MUSE at the VLT. We find a supermassive black hole (SMBH) with a mass of (4.0 ± 0.80) x 10¹⁰ M at the center of Holm 15A. This is the most massive black hole with a direct dynamical detection in the local universe. We find that the distribution of stellar orbits is increasingly biased towards tangential motions inside the core. However, the tangential bias is less than in other cored elliptical galaxies. We compare Holm 15A with N-body simulations of mergers between galaxies with black holes and find that the observed amount of tangential anisotropy and the shape of the light profile are consistent with a formation scenario where Holm 15A is the remnant of a merger between two ETGs with pre-existing depleted cores. We find that black hole masses in cored galaxies, including Holm 15A, scale inversely with the central stellar surface brightness and mass density, respectively. These correlation are independent of a specific parameterization of the light profile.