Original title: Missing bright red giants in the Galactic center: A fingerprint of its once active state?
Authors: Zajaček, Michal ; Araudo, Anabella ; Karas, Vladimír ; Czerny, B. ; Eckart, A. ; Suková, Petra ; Štolc, Marcel ; Witzany, V.
Document type: Papers
Conference/Event: RAGtime /20.-22./, Opava (CZ), 20181015
Year: 2020
Language: eng
Abstract: We propose a novel scenario for the bright red-giant depletion based onthe collisions between red giants and the nuclear jet, which was likely active in the Galactic center a few million years ago and could have led to the formation of the large-scaleγ-ray Fermi bubbles. The process of the jet-induced ablation of red giants appears to be most efficient within∼0.04 pc(S-cluster), while at larger distances it was complemented by star–accretion disc collisions and at smaller scales, tidal stripping operated. These three mechanisms likely operated simultaneously and createdan apparent core of late-type stars within∼0.5 pc.
Keywords: galaxy center; jets; supergiants
Project no.: LTI17018, 8J20PL037
Funding provider: GA MŠk, GA MŠk
Host item entry: Proceedings of RAGtime 20/22: Workshops on black holes and neutron stars, ISBN 978-80-7510-433-5

Institution: Astronomical Institute AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://proceedings.physics.cz/images/proc21/zaj.pdf
Original record: http://hdl.handle.net/11104/0317197

Permalink: http://www.nusl.cz/ntk/nusl-432443


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Conference materials > Papers