Is Jet Re-orientation the Elusive Trigger for Star Formation Suppression in Radio Galaxies?. (1st November 2022)

• Record Type: Journal Article
• Authors: Garofalo, David; Moravec, Emily; Macconi, Duccio; Singh, Chandra B.
• Is Part Of: Publications of the Astronomical Society of the Pacific. Volume 134:Number 1041(2022)
• Publication Date: 2022-11-01
• Subjects: Astronomy -- Periodicals; Astronomy; Periodicals; Periodicals; 520.5
• DOI: 10.1088/1538-3873/ac9714
• Languages: English
• ISSNs: 0004-6280

Abstract

Abstract: Jet re-orientation associated with the time evolution of radio quasars explains the formation of X-shaped radio galaxies and their preference for isolated environments. But since X-shaped radio galaxies are generally not found in dense environments (e.g., groups/clusters), the jet re-orientation phenomenon for radio galaxies in groups and clusters has been ignored. We take a closer look at the re-orientation of FRI jets with respect to FRII jets, and find that it may constitute the as-yet unidentified trigger for star formation suppression in radio galaxies. We show how the recently explored radio "red geyser" galaxies can be interpreted in this context and ultimately reveal a deeper understanding of why FRII radio galaxies are on one side of the star formation enhancement/suppression divide compared to FRI radio galaxies.