The accretion of galaxies into groups and clusters (2009)
McGee, Sean L., Balogh, Michael L., Bower, Richard G., Font, Andreea S., McCarthy, Ian G.
We use the galaxy stellar mass and halo merger tree information from the semi-analytic model galaxy catalogue of Font et al. (2009) to examine the accretion of galaxies into a large sample of groups...
Stellar Black Holes and the Origin of Cosmic Acceleration (2009)
Prescod-Weinstein, Chanda, Afshordi, Niayesh, Balogh, Michael L.
The discovery of cosmic acceleration has presented a unique challenge for cosmologists. As observational cosmology forges ahead, theorists have struggled to make sense of a standard model that...
Lu, Ting, Gilbank, David G., Balogh, Michael L., Bognat, Adam
The global star formation rate has decreased significantly since z ~ 1, for reasons that are not well understood. Red-sequence galaxies, dominating in galaxy clusters, represent the population that...
The colour of galaxies in distant groups (2009)
Balogh, Michael L., McGee, Sean L., Wilman, Dave, Bower, Richard G., Hau, George, Morris, Simon L., ...
(Abridged) We present new optical and near-infrared imaging for a sample of 98 spectroscopically-selected galaxy groups at 0.25
Davies, G. T., Gilbank, David, Glazebrook, K., Bower, Richard G., Baldry, I. K., Balogh, Michael L., ...
We use a K-selected (22.5 < K-AB < 24.0) sample of dwarf galaxies (8.4 < log(M-*/M-circle dot) < 10) at 0.89 < z < 1.15 in the Chandra Deep Field-South to measure their contribution...
A spectroscopic measure of the star formation rate density in dwarf galaxies at z∼ 1 (2009)
Davies, G. T., Gilbank, David G., Glazebrook, Karl, Bower, Richard G., Baldry, I. K., Balogh, Michael L., ...
Davies, G. T., Gilbank, David, Glazebrook, K., Bower, Richard G., Baldry, I. K., Balogh, Michael L., ...
We use a K-selected (22.5 < K-AB < 24.0) sample of dwarf galaxies (8.4 < log(M-*/M-circle dot) < 10) at 0.89 < z < 1.15 in the Chandra Deep Field-South to measure their contribution...
The colour of galaxies in distant groups (2009)
Balogh, Michael L., McGee, Sean L., Wilman, Dave, Bower, Richard G., Hau, George, Morris, Simon L., ...
We present newoptical and near-infrared imaging for a sample of 98 spectroscopically selected galaxy groups at 0.25 < z < 0.55, most of which have velocity dispersions σ < 500 km...
The colour of galaxies in distant groups (2009)
Balogh, Michael L., McGee, Sean L., Wilman, Dave, Bower, Richard G., Hau, George, Morris, Simon L., ...
Evolution in the Disks and Bulges of Group Galaxies since z=0.4 (2008)
McGee, Sean L., Balogh, Michael L., Henderson, Robert D. E., Wilman, David J., Bower, Richard G., Mulchaey, John S., ...
We present quantitative morphology measurements of a sample of optically selected group galaxies at 0.3 < z < 0.55 using the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) and the...
Mass and Redshift Dependence of Star Formation in Relaxed Galaxy Clusters (2008)
Finn, Rose A., Balogh, Michael L., Zaritsky, Dennis, Miller, Christopher J., Nichol, Robert C.
We investigate the star-formation properties of dynamically relaxed galaxy clusters as a function of cluster mass for 308 low-redshift clusters drawn from the Sloan Digital Sky Survey (SDSS) C4...
Gilbank, David G., Balogh, Michael L.
Red-sequence galaxies record the history of terminated star-formation in the Universe and can thus provide important clues to the mechanisms responsible for this termination. We construct composite...
Testing Cold Dark Matter with the hierarchical buildup of stellar light (2008)
Balogh, Michael L., McCarthy, Ian G., Bower, Richard G., Eke, Vincent R.
(Abridged) We demonstrate that the tenet of hierarchical structure growth leads directly to a robust, falsifiable prediction for the correlation between stellar fraction (fstar) and total system mass...
Evolution in the discs and bulges of group galaxies since z= 0.4 (2008)
McGee, Sean L., Balogh, Michael L., Henderson, Robert D. E., Wilman, David J., Bower, Richard G., Mulchaey, John S., ...
Hau, George K. T., Bower, Richard G., Kilborn, Virginia, Forbes, Duncan A., Balogh, Michael L., Oosterloo, Tom
A common feature of hierarchical galaxy formation models is the process of 'inverse' morphological transformation: a bulge dominated galaxy accretes a gas disc, dramatically reducing the system's...
Hau, George K. T., Bower, Richard G., Kilborn, Virginia, Forbes, Duncan A., Balogh, Michael L., Oosterloo, Tom
A common feature of hierarchical galaxy formation models is the process of 'inverse' morphological transformation: a bulge dominated galaxy accretes a gas disc, dramatically reducing the system's...
Hau, George K. T., Bower, Richard G., Kilborn, Virginia, Forbes, Duncan A., Balogh, Michael L., Oosterloo, Tom
A common feature of hierarchical galaxy formation models is the process of 'inverse' morphological transformation: a bulge dominated galaxy accretes a gas disc, dramatically reducing the system's...
Hau, George K. T., Bower, Richard G., Kilborn, Virginia, Forbes, Duncan A., Balogh, Michael L., Oosterloo, Tom
A common feature of hierarchical galaxy formation models is the process of 'inverse' morphological transformation: a bulge dominated galaxy accretes a gas disc, dramatically reducing the system's...
Ram pressure stripping the hot gaseous halos of galaxies in groups and clusters (2007)
McCarthy, Ian G., Frenk, Carlos S., Font, Andreea S., Lacey, Cedric G., Bower, Richard G., Mitchell, Nigel L., ...
We use a large suite of carefully controlled full hydrodynamic simulations to study the ram pressure stripping of the hot gaseous halos of galaxies as they fall into massive groups and clusters. The...
Towards a Holistic View of the Heating and Cooling of the Intracluster Medium (2007)
McCarthy, Ian G., Babul, Arif, Bower, Richard G., Balogh, Michael L.
(Abridged) X-ray clusters are conventionally divided into two classes: "cool core" (CC) clusters and "non-cool core" (NCC) clusters. Yet relatively little attention has been given to the origins of...
Edwards, L. O. V., Hudson, Michael J., Balogh, Michael L., Smith, Russell J.
We examine the optical emission line properties of Brightest Cluster Galaxies (BCGs) selected from two large, homogeneous datasets. The first is the X-ray selected National Optical Astronomy...
Modelling Shock Heating in Cluster Mergers: I. Moving Beyond the Spherical Accretion Model (2007)
McCarthy, Ian G., Bower, Richard G., Balogh, Michael L., Voit, G. Mark, Pearce, Frazer R., Theuns, Tom, ...
(Abridged) The thermal history of the intracluster medium (ICM) is complex. Heat input from cluster mergers, AGN, and galaxy winds offsets and may even halt the cooling of the ICM. Consequently, the...
The stellar mass content of distant galaxy groups (2007)
Balogh, Michael L., Wilman, Dave, Henderson, Robert D. E., Bower, Richard G., Gilbank, David, Whitaker, Richard, ...
The stellar mass content of distant galaxy groups (2007)
Balogh, Michael L., Wilman, Dave, Henderson, Robert D. E., Bower, Richard G., Gilbank, David, Whitaker, Richard, ...
We have obtained near-infrared (NIR) imaging of 58 galaxy groups, in the redshift range 0.1 < z < 0.6, from the William Herschel Telescope and from the Spitzer telescope Infrared Array Camera...
The stellar mass content of distant galaxy groups (2007)
Balogh, Michael L., Wilman, Dave, Henderson, Robert D. E., Bower, Richard G., Gilbank, David, Whitaker, Richard, ...
We have obtained near-infrared (NIR) imaging of 58 galaxy groups, in the redshift range 0.1 < z < 0.6, from the William Herschel Telescope and from the Spitzer telescope Infrared Array Camera...
The stellar mass content of distant galaxy groups (2006)
Balogh, Michael L., Wilman, Dave, Henderson, Robert D. E., Bower, Richard G., Gilbank, David, Whitaker, Richard, ...
We have obtained near-infrared imaging of 58 galaxy groups, in the redshift range 0.1
Revisiting the Baryon Fractions of Galaxy Clusters: A Comparison with WMAP 3-year Results (2006)
McCarthy, Ian G., Bower, Richard G., Balogh, Michael L.
The universal baryonic mass fraction (Omega_b/Omega_m) can be sensitively constrained using X-ray observations of galaxy clusters. In this paper, we compare the baryonic mass fraction inferred from...
Galaxy bimodality versus stellar mass and environment (2006)
Baldry, Ivan K., Balogh, Michael L., Bower, Richard G., Glazebrook, Karl, Nichol, Robert C., Bamford, S. P., ...
Abstract not available.
Galaxy bimodality versus stellar mass and environment (2006)
Baldry, Ivan K., Balogh, Michael L., Bower, Richard G., Glazebrook, Karl, Nichol, Robert C., Bamford, S. P., ...
Abstract not available.
Galaxy bimodality versus stellar mass and environment (2006)
Baldry, Ivan K., Balogh, Michael L., Bower, Richard G., Glazebrook, Karl, Nichol, Robert C., Bamford, S. P., ...
Abstract not available.
Balogh, Michael L., Babul, Arif, Voit, G. Mark, McCarthy, Ian G., Jones, Laurence R., Lewis, Geraint F., ...
(Abridged) We revisit the scaling relationships between the dark matter mass and observed X-ray luminosity and temperature of galaxy clusters and groups in the local Universe. Specifically, we...
Near-infrared imaging of 222 nearby Hdelta-strong galaxies from the SDSS (2005)
Balogh, Michael L., Miller, Chris, Nichol, Robert, Zabludoff, Ann, Goto, Tomo
We present UFTI K-band imaging observations of 222 galaxies that are selected from the Sloan Digital Sky Survey to have unusually strong Hdelta absorption equivalent widths, W(Hd)>4A. Using GIM2D,...
The evolution of [O II] emission from cluster galaxies (2005)
Nakata, Fumiaki, Bower, Richard G., Balogh, Michael L., Wilman, David J.
The Evolution of [OII] Emission from Cluster Galaxies (2004)
Nakata, Fumiaki, Bower, Richard G., Balogh, Michael L., Wilman, David J.
We investigate the evolution of the star formation rate in cluster galaxies. We complement data from the CNOC1 cluster survey (0.15
McCarthy, Ian G., Balogh, Michael L., Babul, Arif, Poole, Gregory B., Horner, Donald J.
(Abridged) Theoretical models that include only gravitationally-driven processes fail to match the observed mean X-ray properties of clusters. As a result, there has recently been increased interest...
The bimodal galaxy color distribution: dependence on luminosity and environment (2004)
Balogh, Michael L., Baldry, Ivan K., Nichol, Robert, Miller, Chris, Bower, Richard, Glazebrook, Karl
We analyse the u-r color distribution of 24346 galaxies with Mr
Galaxy ecology : groups and low-density environments in the SDSS and 2dFGRS (2004)
Balogh, Michael L., Eke, Vince, Miller, Christopher J., Lewis, Ian, Bower, Richard G., Couch, Warrick J., ...
We analyse the observed correlation between galaxy environment and Hα emission-line strength, using volume-limited samples and group catalogues of 24 968 galaxies at 0.05 < z < 0.095,...
De Propris, Roberto, Colless, Matthew, Peacock, John A., Couch, Warrick J., Driver, Simon P., Balogh, Michael L., ...
We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the luminosity limit...
The bimodal galaxy color distribution: dependence on luminosity and environment (2004)
Balogh, Michael L., Baldry, Ivan K., Nichol, Robert C., Miller, Christopher J., Bower, Richard G., Glazebrook, Karl
We analyze the u - r color distribution of 24,346 galaxies with M r ≤ -18 and z < 0.08, drawn from the Sloan Digital Sky Survey first data release, as a function of luminosity and...
McCarthy, Ian G., Balogh, Michael L., Babul, Arif, Poole, Gregory B., Horner, Donald J.
Nonradiative simulations that only include heating due to gravitational processes fail to match the observed mean X-ray properties of galaxy clusters. As a result, there has recently been increased...
Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS (2004)
Balogh, Michael L., Eke, Vince, Miller, Christopher J., Lewis, Ian, Bower, Richard G., Couch, Warrick J., ...
We analyse the observed correlation between galaxy environment and Hα emission-line strength, using volume-limited samples and group catalogues of 24 968 galaxies at 0.05 < z < 0.095, drawn from the...
De Propris, Roberto, Colless, Matthew, Peacock, John A., Couch, Warrick J., Driver, Simon P., Balogh, Michael L., ...
We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the luminosity limit...
The bimodal galaxy color distribution: dependence on luminosity and environment (2004)
Balogh, Michael L., Baldry, Ivan K., Nichol, Robert C., Miller, Christopher J., Bower, Richard G., Glazebrook, Karl
We analyze the u - r color distribution of 24,346 galaxies with M r ≤ -18 and z < 0.08, drawn from the Sloan Digital Sky Survey first data release, as a function of luminosity and...
McCarthy, Ian G., Balogh, Michael L., Babul, Arif, Poole, Gregory B., Horner, Donald J.
Nonradiative simulations that only include heating due to gravitational processes fail to match the observed mean X-ray properties of galaxy clusters. As a result, there has recently been increased...
Bower, Richard G., Balogh, Michael L.
In this review, we take the reader on a journey. We start by looking at the properties of galaxies in the cores of rich clusters. We have focused on the overall picture: star formation in clusters is...
On the Origin of Intracluster Entropy (2003)
Voit, G. Mark, Balogh, Michael L., Bower, Richard G., Lacey, Cedric G., Bryan, Greg L.
The entropy distribution of the intracluster medium and the shape of its confining potential well completely determine the X-ray properties of a relaxed cluster of galaxies, motivating us to explore...
The SZ Effect Signature of Excess Entropy in Distant, Massive Clusters (2003)
McCarthy, Ian G., Holder, Gilbert P., Babul, Arif, Balogh, Michael L.
Studies of cluster X-ray scaling relations have led to suggestions that non-gravitational processes, e.g., radiative cooling and/or "preheating", have significantly modified the entropy of the...
On the Relationship between Cooling Flows and Bubbles (2003)
McCarthy, Ian G., Babul, Arif, Katz, Neal, Balogh, Michael L.
A common feature of the X-ray bubbles observed in Chandra images of some "cooling flow" clusters is that they appear to be surrounded by bright, cool shells. Temperature maps of a few nearby luminous...
Cluster Sunyaev-Zeldovich Effect Scaling Relations (2003)
McCarthy, Ian G., Babul, Arif, Holder, Gilbert P., Balogh, Michael L.
X-ray observations of an "entropy floor" in nearby groups and clusters of galaxies offer evidence that important non-gravitational processes, such as radiative cooling and/or "preheating", have...
Galaxy Properties in Low X-Ray Luminosity Clusters at z=0.25 (2002)
Balogh, Michael L., Bower, R. G., Smail, Ian, Ziegler, B. L., Davies, R. L., Gaztelu, A., ...
We present the first spectroscopic survey of intrinsically low Lx clusters at z>>0, with HST WFPC2 imaging and ground-based spectroscopy. We study 172 confirmed cluster members in a sample of ten...
New Tests of the Cluster Entropy Floor Hypothesis (2002)
McCarthy, Ian G., Babul, Arif, Balogh, Michael L., Holder, Gilbert P.
Recent efforts to account for the observed X-ray luminosity - temperature relation of galaxy clusters has led to suggestions that the ICM has an apparent ``entropy floor'' at or above the level of...
Modified-Entropy Models for the Intracluster Medium (2002)
Voit, G. Mark, Bryan, Greg L., Balogh, Michael L., Bower, Richard G.
We present a set of cluster models that link the present-day properties of clusters to the processes that govern galaxy formation. These models treat the entropy distribution of the intracluster...
The Cluster Gas Mass - Temperature Relation: Evidence for a High Level of Preheating (2002)
McCarthy, Ian G., Babul, Arif, Balogh, Michael L.
Recent X-ray observations have been used to demonstrate that the cluster gas mass-temperature relation is steeper than theoretical self-similar predictions drawn from numerical simulations that...
Lewis, Ian, Balogh, Michael L., De Propris, Roberto, Couch, Warrick J., Bower, Richard G., Offer, Alison R., ...
We have measured the equivalent width of the Ha emission line for 11 006 galaxies brighter than Mb, = -19 (ΩΛ = 0.7, Ωm = 0.3, H0 = 70 km s-1 Mpc-1) at 0.05 < z < 0.1 in the 2dF Galaxy Redshift...
An H alpha survey of the rich cluster A 1689 (2002)
Balogh, Michael L., Couch, Warrick J., Smail, Ian R., Bower, Richard G., Glazebrook, Karl
We present results of an Hα survey in the rich cluster A 1689 at z = 0.18, using the LDSS++ spectrograph on the Anglo-Australian Telescope (AAT). We obtained spectra covering redshifted...
Physical implications of the x-ray properties of galaxy groups and clusters (2002)
Babul, Arif, Balogh, Michael L., Lewis, Geraint F., Poole, Gregory B.
Within the standard framework of structure formation, where clusters and groups of galaxies are built up from the merging of smaller systems, the physical properties of the intracluster medium, such...
Lewis, Ian, Balogh, Michael L., De Propris, Roberto, Couch, Warrick J., Bower, Richard G., Offer, Alison R., ...
We have measured the equivalent width of the Ha emission line for 11 006 galaxies brighter than Mb, = -19 (ΩΛ = 0.7, Ωm = 0.3, H0 = 70 km s-1 Mpc-1) at 0.05 < z < 0.1 in the 2dF Galaxy Redshift...
An H alpha survey of the rich cluster A 1689 (2002)
Balogh, Michael L., Couch, Warrick J., Smail, Ian R., Bower, Richard G., Glazebrook, Karl
We present results of an Hα survey in the rich cluster A 1689 at z = 0.18, using the LDSS++ spectrograph on the Anglo-Australian Telescope (AAT). We obtained spectra covering redshifted Hα at z =...
Physical implications of the x-ray properties of galaxy groups and clusters (2002)
Babul, Arif, Balogh, Michael L., Lewis, Geraint F., Poole, Gregory B.
Within the standard framework of structure formation, where clusters and groups of galaxies are built up from the merging of smaller systems, the physical properties of the intracluster medium, such...
Physical Implications of the X-ray Properties of Galaxy Groups and Clusters (2001)
Babul, Arif, Balogh, Michael L., Lewis, Geraint F., Poole, Gregory B.
Within the standard framework of structure formation, where clusters and groups of galaxies are built up from the merging of smaller systems, the physical properties of the intracluster medium, such...
Bubbles, feedback and the intra-cluster medium: three-dimensional hydrodynamic simulations (2001)
Quilis, Vicent, Bower, Richard G., Balogh, Michael L.
We use a three dimensional hydrodynamical code to simulate the effect of energy injection on cooling flows in the intracluster medium. Specifically, we compare a simulation of a 10$^{15}$ $M_\odot$...
The Star Formation Histories of Local Galaxies: Continuous or Intermittent? (2001)
Kauffmann, Guinevere, Charlot, Stephane, Balogh, Michael L.
We explore a model in which efficient star formation in galaxies is triggered by merging satellites. We show that the merger/interaction rates predicted by hierarchical galaxy formation models depend...
A low global star formation rate in the rich galaxy cluster AC 114 at z=0.32 (2001)
Couch, Warrick J., Balogh, Michael L., Bower, Richard G., Smail, Ian R., Glazebrook, Karl, Taylor, Melinda
We present the results of a wide-field survey for Hα-emitting galaxies in the cluster AC 114 at z = 0.32. Spectra centered on Hα at the cluster redshift have been obtained for 586 galaxies to Itot...
A low global star formation rate in the rich galaxy cluster AC 114 at z=0.32 (2001)
Couch, Warrick J., Balogh, Michael L., Bower, Richard G., Smail, Ian R., Glazebrook, Karl, Taylor, Melinda
We present the results of a wide-field survey for Hα-emitting galaxies in the cluster AC 114 at z = 0.32. Spectra centered on Hα at the cluster redshift have been obtained for 586 galaxies to Itot...
A low global star formation rate in the rich galaxy cluster AC114 at z=0.32 (2000)
Couch, Warrick J., Balogh, Michael L., Bower, Richard G., Smail, Ian, Glazebrook, Karl, Taylor, Melinda
We present the results of a wide-field survey for H-alpha emitting galaxies in the cluster AC114 at z=0.32. Spectra centred on H-alpha at the cluster redshift have been obtained for 586 galaxies to...
H-alpha Photometry of Abell 2390 (2000)
Balogh, Michael L., Morris, Simon L.
We present the results of a search for strong H-alpha emission line galaxies (rest frame equivalent widths greater than 50 A) in the z=0.23 cluster Abell 2390. The survey contains 1189 galaxies over...
Diaferio, Antonaldo, Kauffmann, Guinevere, Balogh, Michael L., White, Simon D. M., Schade, David, Ellingson, Erica
We combine dissipationless N-body simulations and semi-analytic models of galaxy formation to study the spatial and kinematic distributions of cluster galaxies in a LCDM cosmology. We investigate how...
The Origin of Star Formation Gradients in Rich Galaxy Clusters (2000)
Balogh, Michael L., Navarro, Julio F., Morris, Simon L.
We examine the origin of clustercentric gradients in the star formation rates and colors of rich cluster galaxies within the context of a simple model where clusters are built through the ongoing...
Differential Galaxy Evolution in Cluster and Field Galaxies at z=0.3 (1999)
Balogh, Michael L., Morris, S. L., Yee, H. K. C., Carlberg, R. G., Ellingson, E.
(abridged) We measure spectral indices for 1823 galaxies in the CNOC1 sample of fifteen X-ray luminous clusters at 0.18