A STUDY of CENTRAL GALAXY ROTATION with STELLAR MASS and ENVIRONMENT

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, Kevin Pimbblet, Prajwal R. Kafle, Warrick J. Couch

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Abstract

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(M200 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. 

Original languageEnglish
Article number89
Number of pages13
JournalAstronomical Journal
Volume153
Issue number2
DOIs
Publication statusPublished - 31 Jan 2017

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Oliva-Altamirano, P., Brough, S., Tran, K. V., Jimmy, Miller, C., Bremer, M. N., ... Couch, W. J. (2017). A STUDY of CENTRAL GALAXY ROTATION with STELLAR MASS and ENVIRONMENT. Astronomical Journal, 153(2), [89]. https://doi.org/10.3847/1538-3881/153/2/89
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. / A STUDY of CENTRAL GALAXY ROTATION with STELLAR MASS and ENVIRONMENT. In: Astronomical Journal. 2017 ; Vol. 153, No. 2.
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abstract = "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(M200 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. ",
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Oliva-Altamirano, P, Brough, S, Tran, KV, Jimmy, Miller, C, Bremer, MN, Phillipps, S, Sharp, R, Colless, M, Lara-López, MA, López-Sánchez, ÁR, Pimbblet, K, Kafle, PR & Couch, WJ 2017, 'A STUDY of CENTRAL GALAXY ROTATION with STELLAR MASS and ENVIRONMENT' Astronomical Journal, vol. 153, no. 2, 89. https://doi.org/10.3847/1538-3881/153/2/89

A STUDY of CENTRAL GALAXY ROTATION with STELLAR MASS and ENVIRONMENT. / 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.

In: Astronomical Journal, Vol. 153, No. 2, 89, 31.01.2017.

Research output: Contribution to journalArticle

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T1 - A STUDY of CENTRAL GALAXY ROTATION with STELLAR MASS and ENVIRONMENT

AU - Oliva-Altamirano, Paola

AU - Brough, Sarah

AU - Tran, Kim Vy

AU - Jimmy, null

AU - Miller, Christopher

AU - Bremer, Malcom N.

AU - Phillipps, Steven

AU - Sharp, Rob

AU - Colless, Matthew

AU - Lara-López, Maritza A.

AU - López-Sánchez, Ángel R.

AU - Pimbblet, Kevin

AU - Kafle, Prajwal R.

AU - Couch, Warrick J.

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N2 - 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(M200 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. 

AB - 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(M200 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. 

KW - galaxies: clusters: general

KW - galaxies: elliptical and lenticular, cD

KW - galaxies: evolution

KW - galaxies: groups: general

KW - galaxies: kinematics and dynamics

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Oliva-Altamirano P, Brough S, Tran KV, Jimmy, Miller C, Bremer MN et al. A STUDY of CENTRAL GALAXY ROTATION with STELLAR MASS and ENVIRONMENT. Astronomical Journal. 2017 Jan 31;153(2). 89. https://doi.org/10.3847/1538-3881/153/2/89