Browsing Research Output by Author "Loubser, S.I."
Now showing items 1-12 of 12
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Clustering algorithms: sensitivity of mass determination using A 3581
(Wiley-VCH, 2013)In this paper we discuss various methods for clustering in order to determine estimates of the cluster mass, focusing on the cluster A3581. Using virtual observatory (VO) tools, possible galaxy cluster candidates are ... -
The detailed nature of active central cluster galaxies
(South African Institute of Physics, 2014)We present detailed IFU observations of the central few kiloparsecs of the ionised nebulae surrounding four active central cluster galaxies in cooling flow clusters. All four galaxies have Hα filaments, and existing data ... -
The detailed nature of active central cluster galaxies
(Oxford Univ Press, 2013)We present detailed integral field unit observations of the central few kiloparsecs of the ionized nebulae surrounding four active central cluster galaxies (CCGs) in cooling flow clusters (Abell 0496, 0780, 1644 and ... -
Dynamical masses of brightest cluster galaxies. I. Stellar velocity anisotropy and mass-to-light ratios
(Oxford Univ press, 2020)We investigate the stellar and dynamical mass profiles in the centres of 25 brightest cluster galaxies (BCGs) at redshifts of 0.05 ≤ z ≤ 0.30. Our spectroscopy enables us to robustly measure the Gauss–Hermite higher order ... -
Dynamical modelling of brightest cluster galaxies: constraints on the IMF
(Cambridge Univ Press, 2020)We study the stellar and dynamical masses, as well as the stellar populations, of brightest cluster galaxies (BCGs) located in 32 massive clusters, and for a sub-sample of these use the results to place constraints on the ... -
Investigating brightest cluster galaxies: kinematics with SALT
(South African Institute of Physics, 2014)We present detailed, high spatial and spectral resolution, longslit observations of four active central cluster galaxies (CCGs) in cooling flow clusters (Abell 0085, 0133, 0644 and Ophiuchus). Our sample consists of CCGs ... -
Investigating the star formation histories of the brightest cluster galaxies
(Oxford Univ Press, 2014)This article is devoted to the study of the central stellar populations of the brightest cluster galaxies (BCGs). High signal-to-noise ratio, long-slit spectra for a sample of 39 galaxies were fitted against two stellar ... -
Mg2 gradients as a signature of brightest cluster galaxy evolution
(Wiley, 2011)We have fitted the Mg2 absorption index gradients for 21 brightest cluster galaxies (BCGs), in the nearby Universe, for which we have obtained high signal-to-noise ratio, long-slit spectra on the Gemini telescopes. This ... -
Stellar and dynamical masses of brightest cluster galaxies
(Cambridge Univ Press, 2020)We investigate the stellar and dynamical mass profiles of 32 brightest cluster galaxies (BCGs, MK = −25.7 to −27.8 mag) in massive clusters (0.05 < z < 0.30), and in particular the rising velocity dispersion profiles of ... -
Stellar population gradients in brightest cluster galaxies
(Oxford Univ Press, 2012)We present the stellar population and velocity dispersion gradients for a sample of 24 brightest cluster galaxies (BCGs) in the nearby Universe for which we have obtained high-quality long-slit spectra at the Gemini ... -
Stellar populations in central cluster galaxies: the influence of cooling flows
(Oxford Univ Press, 2014)We present detailed, high spatial and spectral resolution, long-slit observations of four central cluster galaxies (CCGs; Abell 0085, 0133, 0644 and Ophiuchus) recently obtained on the Southern African Large Telescope. ... -
The ultraviolet upturn in brightest cluster galaxies
(Wiley, 2011)This paper is part of a series devoted to the investigation of a large sample of brightest cluster galaxies (BCGs), their properties and the relationships between these properties and the properties of the host clusters. ...
