All Outputs (28)

Enhancement of AGN in a protocluster at z=1.6 (2017)
Journal Article
Krishnan, C., Hatch, N. A., Almaini, O., Kocevski, D., Cooke, E. A., Hartley, W. G., Hasinger, G., Maltby, D. T., Muldrew, S. I., & Simpson, C. (2017). Enhancement of AGN in a protocluster at z=1.6. Monthly Notices of the Royal Astronomical Society, 470(2), 2170-2178. https://doi.org/10.1093/mnras/stx1315

We investigate the prevalence of AGN in the high-redshift protocluster Cl 0218.3–0510 at z = 1.62. Using imaging from the Chandra X-ray Telescope, we find a large overdensity of AGN in the protocluster; a factor of 23±9 times the field density of AGN... Read More about Enhancement of AGN in a protocluster at z=1.6.

OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2: II. Environmental influence on integrated star formation properties and AGN activity (2017)
Journal Article
Rodríguez del Pino, B., Aragón-Salamanca, A., Chies-Santos, A. L., Weinzirl, T., Bamford, S. P., Gray, M. E., Böhm, A., Wolf, C., & Maltby, D. T. (2017). OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2: II. Environmental influence on integrated star formation properties and AGN activity. Monthly Notices of the Royal Astronomical Society, 467(4), 4200-4217. https://doi.org/10.1093/mnras/stx228

We present a study of the star formation and AGN activity for galaxies in CP 15051 the Abell 901/2 multicluster system at z ∼ 0.167 as part of the OSIRIS Mapping of Emission-line Galaxies in A901/2 (OMEGA) survey. Using Tuneable Filter data obtained... Read More about OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2: II. Environmental influence on integrated star formation properties and AGN activity.

The evolution of post-starburst galaxies from z=2 to 0.5 (2016)
Journal Article
Wild, V., Almaini, O., Dunlop, J., Simpson, C., Rowlands, K., Bowler, R., Maltby, D., & McLure, R. (2016). The evolution of post-starburst galaxies from z=2 to 0.5. Monthly Notices of the Royal Astronomical Society, 463(1), 832-844. https://doi.org/10.1093/mnras/stw1996

We present the evolution in the number density and stellar mass functions of photometrically selected post-starburst galaxies in the UKIDSSUltraDeep Survey,with redshifts of 0.5<z<2 and stellar masses log (M/M�) >10. We find that this transitionary s...

The identification of post-starburst galaxies at z∼1 using multiwavelength photometry: a spectroscopic verification (2016)
Journal Article
Maltby, D. T., Almaini, O., Wild, V., Hatch, N. A., Hartley, W. G., Simpson, C., McLure, R. J., Dunlop, J., Rowlands, K., & Cirasuolo, M. (2016). The identification of post-starburst galaxies at z∼1 using multiwavelength photometry: a spectroscopic verification. Monthly Notices of the Royal Astronomical Society: Letters, 459(1), Article L114-L118. https://doi.org/10.1093/mnrasl/slw057

Despite decades of study, we still do not fully understand why some massive galaxies abruptly switch off their star formation in the early Universe, and what causes their rapid transition to the red sequence. Post-starburst galaxies provide a rare op... Read More about The identification of post-starburst galaxies at z∼1 using multiwavelength photometry: a spectroscopic verification.

Linking the structural properties of galaxies and their star formation histories with STAGES (2015)
Journal Article
Hoyos, C., Aragón-Salamanca, A., Gray, M. E., Wolf, C., Maltby, D. T., Bell, E. F., Böhm, A., & Jogee, S. (2016). Linking the structural properties of galaxies and their star formation histories with STAGES. Monthly Notices of the Royal Astronomical Society, 455(1), 295-307. https://doi.org/10.1093/mnras/stv2321

We study the links between star formation history and structure for a large mass-selected galaxy sample at 0.05 ≤ zphot ≤ 0.30. The galaxies inhabit a very broad range of environments, from cluster cores to the field. Using Hubble Space Telescope (HS... Read More about Linking the structural properties of galaxies and their star formation histories with STAGES.

OMEGA - OSIRIS Mapping of Emission-line Galaxies in A901/2: I. Survey description, data analysis, and star formation and AGN activity in the highest density regions (2015)
Journal Article
Chies-Santos, A., Rodriguez del Pino, B., Aragón-Salamanca, A., Bamford, S., Gray, M., Wolf, C., Bohm, A., Maltby, D., Pintos-Castro, I., Sanchez-Portal, M., & Weinzirl, T. (2015). OMEGA - OSIRIS Mapping of Emission-line Galaxies in A901/2: I. Survey description, data analysis, and star formation and AGN activity in the highest density regions. Monthly Notices of the Royal Astronomical Society, 450(4), 4458-4474. https://doi.org/10.1093/mnras/stv779

We present an overview of and first results from the OMEGA (OSIRIS Mapping of Emission-line Galaxies in the multicluster system A901/2) survey. The ultimate goal of this project is to study star formation and active galactic nucleus (AGN) activity ac... Read More about OMEGA - OSIRIS Mapping of Emission-line Galaxies in A901/2: I. Survey description, data analysis, and star formation and AGN activity in the highest density regions.

Galaxy sizes as a function of environment at intermediate redshift from the ESO Distant Cluster Survey (2015)
Journal Article
Kelkar, K., Aragón-Salamanca, A., Gray, M., Maltby, D., Vulcani, B., De Lucia, G., Poggianti, B., & Zaritsky, D. (2015). Galaxy sizes as a function of environment at intermediate redshift from the ESO Distant Cluster Survey. Monthly Notices of the Royal Astronomical Society, 450(2), https://doi.org/10.1093/mnras/stv670

In order to assess whether the environment has a significant effect on galaxy sizes, we compare the mass–size relations of cluster and field galaxies in the 0.4<z<0.8 red-shift range from the ESO Distant Cluster Survey (EDisCS) using Hubble Space Tel...

The environmental dependence of the structure of galactic discs in STAGES S0 galaxies: implications for S0 formation (2015)
Journal Article
Maltby, D. T., Aragón-Salamanca, A., Gray, M. E., Hoyos, C., Wolf, C., Jogee, S., & Böhm, A. (in press). The environmental dependence of the structure of galactic discs in STAGES S0 galaxies: implications for S0 formation. Monthly Notices of the Royal Astronomical Society, 447(2), https://doi.org/10.1093/mnras/stu2536

We present an analysis of V-band radial surface brightness μ(r) profiles for S0 galaxies in different environments using Hubble Space Telescope/Advanced Camera for Surveys imaging and data from the Space Telescope A901/2 Galaxy Evolution Survey. Usin... Read More about The environmental dependence of the structure of galactic discs in STAGES S0 galaxies: implications for S0 formation.