Data and two-dimensional scaling relations for galaxies in Abell 1689: a hint of size evolution at z∼ 0.2

Houghton, R. C. W.; Davies, Roger L.; Bontà, E. Dalla; Masters, R.

doi:10.1111/j.1365-2966.2012.20842.x

Cited by 19 publications

(28 citation statements)

References 173 publications

(244 reference statements)

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“…The BB filters used for continuum subtraction are also overplotted. Houghton et al 2012;Ziparo et al 2012;Lemze et al 2013;Dawson et al 2015;Sobral et al 2015;Jee et al 2016;van Weeren et al 2016b). We also make use of the redshift compilation from Rines et al (2013) and the 2dF Galaxy Redshift Survey (2dFGRS; Colless et al 2001).…”

Section: Ancillary Datamentioning

confidence: 99%

A large Hα survey of star formation in relaxed and merging galaxy cluster environments atz∼ 0.15–0.3

Stroe

Sobral

Afonso

et al. 2016

Mon. Not. R. Astron. Soc.

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We present the first results from the largest Hα survey of star formation and AGN activity in galaxy clusters. Using 9 different narrow band filters, we select > 3000 Hα emitters within 19 clusters and their larger scale environment over a total volume of 1.3 × 10 5 Mpc 3 . The sample includes both relaxed and merging clusters, covering the 0.15 − 0.31 redshift range and spanning from 5 × 10 14 M to 30 × 10 14 M . We find that the Hα luminosity function (LF) for merging clusters has a higher characteristic density φ * compared to relaxed clusters. φ * drops from cluster core to cluster outskirts for both merging and relaxed clusters, with the merging cluster values ∼ 0.3 dex higher at each projected radius. The characteristic luminosity L * drops over the 0.5 − 2.0 Mpc distance from the cluster centre for merging clusters and increases for relaxed objects. Among disturbed objects, clusters hosting large-scale shock waves (traced by radio relics) are overdense in Hα emitters compared to those with turbulence in their intra-cluster medium (traced by radio haloes). We speculate that the increase in star formation activity in disturbed, young, massive galaxy clusters can be triggered by interactions between gas-rich galaxies, shocks and/or the intra-cluster medium, as well as accretion of filaments and galaxy groups. Our results indicate that disturbed clusters represent vastly different environments for galaxy evolution compared to relaxed clusters or average field environments.

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Section: Ancillary Datamentioning

confidence: 99%

A large Hα survey of star formation in relaxed and merging galaxy cluster environments atz∼ 0.15–0.3

Stroe

Sobral

Afonso

et al. 2016

Mon. Not. R. Astron. Soc.

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“…We also used g -and r -band Gemini Multi-Object Spectrographs imaging from the Gemini telescope. See Houghton et al (2012).…”

Section: Archival Datamentioning

confidence: 99%

Fast and slow rotators in the densest environments: a FLAMES/GIRAFFE integral field spectroscopy study of galaxies in A1689 at z = 0.183

D’Eugenio¹,

Houghton²,

Davies³

et al. 2012

Monthly Notices of the Royal Astronomical Society

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We present FLAMES/GIRAFFE integral field spectroscopy of 30 galaxies in the massive cluster A1689 at z = 0.183. Conducting an analysis similar to that of ATLAS 3D , we extend the baseline of the kinematic morphology-density relation by an order of magnitude in projected density and show that it is possible to use existing instruments to identify slow and fast rotators beyond the local Universe. We find 4.5 ± 1.0 slow rotators with a distribution in magnitude similar to those in the Virgo cluster. The overall slow rotator fraction of our A1689 sample is 0.15 ± 0.03, the same as in Virgo using our selection criteria. This suggests that the fraction of slow rotators in a cluster is not strongly dependent on its density. However, within A1689, we find that the fraction of slow rotators increases towards the centre, as was also found in the Virgo cluster.

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“…We split the K-correction into two components (as in, e.g., Houghton et al 2012), such that the total K-correction is…”

Section: K-correctionsmentioning

confidence: 99%

The KMOS Cluster Survey (KCS). III. Fundamental Plane of Cluster Galaxies at z ≃ 1.80 in JKCS 041*

Prichard

Davies

Beifiori

et al. 2017

ApJ

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We present data for 16 galaxies in the overdensity JKCS 041 at z 1.80 as part of the K-band Multi-Object Spectrograph (KMOS) Cluster Survey (KCS). With 20-hour integrations, we have obtained deep absorption-line spectra from which we derived velocity dispersions for seven quiescent galaxies. We combined photometric parameters derived from Hubble Space Telescope images with the dispersions to construct a fundamental plane (FP) for quiescent galaxies in JKCS 041. From the zero-point evolution of the FP, we derived a formation redshift for the galaxies of z f orm = 3.0±0.3, corresponding to a mean age of 1.4 ± 0.2 Gyrs. We tested the effect of structural and velocity dispersion evolution on our FP zero point and found a negligible contribution when using dynamical mass-normalized parameters (∼ 3%), but a significant contribution from stellar-mass-normalized parameters (∼ 42%). From the relative velocities of the galaxies, we probed the three-dimensional structure of these 16 confirmed members of JKCS 041, and found that a group of galaxies in the south west of the overdensity had systematically higher velocities. We derived ages for the galaxies in the different groups from the FP. We found the east-extending group had typically older galaxies (2.1 +0.3 −0.2 Gyrs), than those in the south-west group (0.3 ± 0.2 Gyrs). Although based on small numbers, the overdensity dynamics, morphology, and age results could indicate that JKCS 041 is in formation and may comprise two merging groups of galaxies. The result could link large-scale structure to ages of galaxies for the first time at this redshift.

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Data and two-dimensional scaling relations for galaxies in Abell 1689: a hint of size evolution at z∼ 0.2

Cited by 19 publications

References 173 publications

A large Hα survey of star formation in relaxed and merging galaxy cluster environments atz∼ 0.15–0.3

A large Hα survey of star formation in relaxed and merging galaxy cluster environments atz∼ 0.15–0.3

Fast and slow rotators in the densest environments: a FLAMES/GIRAFFE integral field spectroscopy study of galaxies in A1689 at z = 0.183

The KMOS Cluster Survey (KCS). III. Fundamental Plane of Cluster Galaxies at z ≃ 1.80 in JKCS 041*

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