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A study of central galaxy rotation with stellar mass and environment

Lara-Lopez, Maritza A.; Lopez-Sanchez, Angel R.; Oliva-Altamirano, Paola; Brough, Sarah; Tran, Kim-Vy; Jimmy; Miller, Christopher; Bremer, Malcom N.; Phillipps, Steven; Sharp, Rob; Colless, Matthew; Lara-López, Maritza A.; López-Sánchez, Ángel R.; Pimbblet, Kevin; Kafle, Prajwal R.; Couch, Warrick J.

Authors

Maritza A. Lara-Lopez

Angel R. Lopez-Sanchez

Paola Oliva-Altamirano

Sarah Brough

Kim-Vy Tran

Jimmy

Christopher Miller

Malcom N. Bremer

Steven Phillipps

Rob Sharp

Matthew Colless

Maritza A. Lara-López

Ángel R. López-Sánchez

Prajwal R. Kafle

Warrick J. Couch



Abstract

© 2017. The American Astronomical Society. All rights reserved. We present a pilot analysis of the influence of galaxy stellar mass and cluster environment on the probability of slow rotation in 22 central galaxies at mean redshift z = 0.07. This includes new integral-field observations of five central galaxies selected from the Sloan Digital Sky Survey, observed with the SPIRAL integral-field spectrograph on the Anglo-Australian Telescope. The composite sample presented here spans a wide range of stellar masses, 10.9 < log(M∗/M⊙)lt; 12.0, and are embedded in halos ranging from groups to clusters, 12.9 < log(M 200 Ṁ) < 15.6. We find a mean probability of slow rotation in our sample of P(SR) = 54 ± 7%. Our results show an increasing probability of slow rotation in central galaxies with increasing stellar mass. However, when we examine the dependence of slow rotation on host cluster halo mass, we do not see a significant relationship. We also explore the influence of cluster dominance on slow rotation in central galaxies. Clusters with low dominance are associated with dynamically younger systems. We find that cluster dominance has no significant effect on the probability of slow rotation in central galaxies. These results conflict with a paradigm in which halo mass alone predetermines central galaxy properties.

Publication Date Feb 1, 2017
Journal Astronomical Journal
Print ISSN 1538-3881
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 153
Issue 2
Article Number ARTN 89
Pages 89
APA6 Citation Lara-Lopez, M. A., Lopez-Sanchez, A. R., Oliva-Altamirano, P., Brough, S., Tran, K., Jimmy, , …Couch, W. J. (2017). A study of central galaxy rotation with stellar mass and environment. The Astronomical journal, 153(2), 89. https://doi.org/10.3847/1538-3881/153/2/89
DOI https://doi.org/10.3847/1538-3881/153/2/89
Keywords Galaxies: clusters: general; Galaxies: elliptical and lenticular, cD; Galaxies: evolution; Galaxies: groups: general ; Galaxies: kinematics and dynamics
Publisher URL http://iopscience.iop.org/article/10.3847/1538-3881/153/2/89/meta
Copyright Statement © 2017. The American Astronomical Society. All rights reserved
Additional Information Journal title: The Astronomical Journal; Article type: paper; Article title: A STUDY OF CENTRAL GALAXY ROTATION WITH STELLAR MASS AND ENVIRONMENT; Copyright information: © 2017. The American Astronomical Society. All rights reserved.; Date received: 2016-09-15; Date accepted: 2016-11-11; Online publication date: 2017-01-31

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Copyright Statement
© 2017. The American Astronomical Society. All rights reserved



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