期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 487, 期 3, 页码 3102-3111出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stz1443
关键词
galaxies: clusters: intracluster medium; galaxies: star formation
资金
- European Organisation for Astronomical Research in the Southern hemisphere under ESO program [196.B-0578]
- PRIN-SKA 2017
- CONICYT PAI (Concurso Nacional de Insercion en la Academia 2017) [79170132]
- FONDECYT Initiation 2018 [11180558]
- European Research Council (ERC) under the European Union [833824]
- European Research Council (ERC) [833824] Funding Source: European Research Council (ERC)
We report evidence for star formation quenching in the central 8.6 kpc region of the jellyfish galaxy JO201 that hosts an active galactic nucleus (AGN), while undergoing strong ram pressure stripping. The ultraviolet imaging data of the galaxy disc reveal a region with reduced flux around the centre of the galaxy and a horse-shoe-shaped region with enhanced flux in the outer disc. The characterization of the ionization regions based on emission line diagnostic diagrams shows that the region of reduced flux seen in the ultraviolet is within the AGN-dominated area. The CO J(2-1) map of the galaxy disc reveals a cavity in the central region. The image of the galaxy disc at redder wavelengths (9050-9250 angstrom) reveals the presence of a stellar bar. The star formation rate map of the galaxy disc shows that the star formation suppression in the cavity occurred in the last few 10(8) yr. We present several lines of evidence supporting the scenario that suppression of star formation in the central region of the disc is most likely due to the feedback from the AGN, The observations reported here make JO201 a unique case of AGN-feedback and environmental effects suppressing star formation in a spiral. galaxy.
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