Browsing by Subject "Galaxies: clusters: general"
Now showing items 1-10 of 11
-
The close pair fraction of BCGs since z = 0.5: major mergers dominate recent BCG stellar mass growth
(Oxford Univ Press, 2017)Using the redMaPPer (red-sequence Matched-filter Probabilistic Percolation) cluster catalogue based on the Sloan Digital Sky Survey (SDSS) photometry, we investigate the importance of major mergers in the stellar mass ... -
Discovery of a suspected giant radio galaxy with the KAT-7 array
(Oxford Univ Press, 2016)We detect a new suspected giant radio galaxy (GRG) discovered by KAT-7. The GRG core is identified with the Wide-field Infrared Survey Explorer source J013313.50-130330.5, an extragalactic source based on its infrared ... -
Diversity in the stellar velocity dispersion profiles of a large sample of brightest cluster galaxies z ≤ 0.3
(Oxford Univ Press, 2018)We analyse spatially resolved deep optical spectroscopy of brightestcluster galaxies (BCGs) located in 32 massive clusters with redshifts of 0.05 ≤ z ≤ 0.30 to investigate their velocity dispersion profiles. We compare ... -
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 ... -
Gemini observations of galaxies in rich early environments (GOGREEN) I: survey description
(Oxford Univ Press, 2017)We describe a new Large Program in progress on the Gemini North and South telescopes: Gemini Observations of Galaxies in Rich Early Environments (GOGREEN). This is an imaging and deep spectroscopic survey of 21 galaxy ... -
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 ... -
The regulation of star formation in cool-core clusters: imprints on the stellar populations of brightest cluster galaxies
(Oxford Univ Press, 2016)A fraction of brightest cluster galaxies (BCGs) show bright emission in the ultraviolet and the blue part of the optical spectrum, which has been interpreted as evidence of recent star formation. Most of these results ... -
A spectroscopic census of the Fornax cluster and beyond: preparing for next generation surveys
(Oxford Univ Press, 2019)The Fornax cluster is the nearest large cluster in the southern sky, and is currently experiencing active assembly of mass. It is thus the target of a number of ongoing observing campaigns at optical, near-infrared, and ... -
A spectroscopic census of the Fornax cluster and beyond: preparing for next generation surveys
(Oxford Univ Press, 2019)The Fornax cluster is the nearest large cluster in the southern sky, and is currently experiencing active assembly of mass. It is thus the target of a number of ongoing observing campaigns at optical, near-infrared, and ...
