Depletion of bright red giants in the galactic center during its active phases

0536455 - FZÚ 2021 RIV US eng J - Journal Article
Zajacek, M. - Araudo, Anabella Teresa - Karas, V. - Czerny, B. - Eckart, A.
Depletion of bright red giants in the galactic center during its active phases.
Astrophysical Journal. Roč. 903, č. 2 (2020), s. 1-18, č. článku 140. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR(CZ) GA20-19854S
Institutional support: RVO:68378271
Keywords : red giant stars * relativistic jets * stellar dynamics
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 5.877, year: 2020
Method of publishing: Limited access
https://doi.org/10.3847/1538-4357/abbd94

Observations in the near-infrared domain showed the presence of the flat core of bright late-type stars inside ~0.5 pc from the Galactic center supermassive black hole (Sgr A*), while young massive OB/Wolf–Rayet stars form a cusp. Several dynamical processes were proposed to explain this apparent paradox of the distribution of the Galactic center stellar populations. Given the mounting evidence on the significantly increased activity of Sgr A* during the past million years, we propose a scenario based on the interaction between the late-type giants and a nuclear jet, whose past existence and energetics can be inferred from the presence of γ-ray Fermi bubbles and bipolar radio bubbles.
Permanent Link: http://hdl.handle.net/11104/0314229