期刊
ASTROPHYSICAL JOURNAL
卷 893, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/ab8008
关键词
Galaxy evolution; Cosmological evolution; Galaxy environments; Barred spiral galaxies; Galaxy clusters; Tidal interaction; Galaxy interactions; Star formation; Galaxy formation
资金
- National Research Foundation of Korea (NRF) grant - Korea government (MSIP) [2017R1A3A3001362]
- Korea Institute for Advanced Study [PG076301]
- National Research Foundation of Korea [2017R1A3A3001362, PG076301] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A recent study shows that bars can be induced via interaction of galaxy clusters, but it has been unclear if the bar formation by the interaction between clusters is related to the enhancement of star formation. We study galaxies in 105 galaxy clusters at 0.015.<.z.<.0.060 detected from Sloan Digital Sky Survey data, in order to examine whether the fraction of star-forming galaxies ( fsf) in 16 interacting clusters is enhanced compared with that of the other non-interacting clusters and to investigate the possible connection between the fsf enhancement and the bar formation in interacting clusters. We find that fsf is moderately higher (20%) in interacting clusters than in noninteracting clusters and that the enhancement of star formation in interacting clusters occurs only in moderate-mass disk-dominated galaxies (1010.0. M M. < 10 star 10.4 and the bulge-to-total light ratio is.0.5). We also find that the enhancement of fsf in moderate-mass disk-dominated galaxies in interacting clusters is mostly due to the increase of the number of barred galaxies. Our result suggests that the cluster-cluster interaction can simultaneously induce bars and star formation in disk galaxies.
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