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.

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.

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

• Acceptance Date: Nov 11, 2016
• Online Publication Date: Jan 30, 2017
• Publication Date: Feb 1, 2017
• Deposit Date: Feb 27, 2018
• Publicly Available Date: Feb 27, 2018
• 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
• 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
• Public URL: https://hull-repository.worktribe.com/output/590347
• Publisher URL: http://iopscience.iop.org/article/10.3847/1538-3881/153/2/89/meta
• 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