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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 742569.0, MPI für Astronomie / Publikationen_mpia
Suppressed star formation by a merging cluster system
Authors:Mansheim, A. S.; Lemaux, B. C.; Tomczak, A. R.; Lubin, L. M.; Rumbaugh, N.; Wu, P. -. F.; Gal, R. R.; Shen, L.; Dawson, W. A.; Squires, G. K.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:Monthly Notices of the Royal Astronomical Society
Volume:469
Start Page:L20
End Page:L25
Audience:Not Specified
Abstract / Description:We examine the effects of an impending cluster merger on galaxies in the large-scale structure (LSS) RX J0910 at z =1.105. Using multiwavelength data, including 102 spectral members drawn from the Observations of Redshift Evolution in Large Scale Environments (ORELSE) survey and precise photometric redshifts, we calculate star formation rates and map the specific star formation rate density of the LSS galaxies. These analyses along with an investigation of the colour-magnitude properties of LSS galaxies indicate lower levels of star formation activity in the region between the merging clusters relative to the outskirts of the system. We suggest that gravitational tidal forces due to the potential of the merging haloes may be the physical mechanism responsible for the observed suppression of star formation in galaxies caught between the merging clusters.
Free Keywords:techniques: spectroscopic; galaxies: clusters: general; galaxies: clusters: individual: J0910+5422; galaxies: clusters: individual: J0910+5419; galaxies: evolution
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0035-8711
URL:http://adsabs.harvard.edu/abs/2017MNRAS.469L..20M
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