Outputs (286)

The WiggleZ Dark Energy Survey: improved distance measurements to z = 1 with reconstruction of the baryonic acoustic feature (2014)
Journal Article
Kazin, E. A., Koda, J., Blake, C., Padmanabhan, N., Brough, S., Colless, M., Contreras, C., Couch, W., Croom, S., Croton, D. J., Davis, T. M., Drinkwater, M. J., Forster, K., Gilbank, D., Gladders, M., Glazebrook, K., Jelliffe, B., Jurek, R. J., Li, I.-H., Madore, B., …Yee, H. K. C. (2014). The WiggleZ Dark Energy Survey: improved distance measurements to z = 1 with reconstruction of the baryonic acoustic feature. Monthly notices of the Royal Astronomical Society, 441(4), 3524-3542. https://doi.org/10.1093/mnras/stu778

We present significant improvements in cosmic distance measurements from the WiggleZ Dark Energy Survey, achieved by applying the reconstruction of the baryonic acoustic feature technique. We show using both data and simulations that the reconstructi... Read More about The WiggleZ Dark Energy Survey: improved distance measurements to z = 1 with reconstruction of the baryonic acoustic feature.

The role of feedback in shaping the structure of the interstellar medium (2014)
Journal Article
Walker, A. P., Gibson, B. K., Pilkington, K., Brook, C. B., Dutta, P., Stanimirović, S., Stinson, G. S., & Bailin, J. (2014). The role of feedback in shaping the structure of the interstellar medium. Monthly notices of the Royal Astronomical Society, 441(1), 525-531. https://doi.org/10.1093/mnras/stu419

We present an analysis of the role of feedback in shaping the neutral hydrogen (H i) content of simulated disc galaxies. For our analysis, we have used two realizations of two separate Milky Way-like (~L{black star}) discs - one employing a conservat... Read More about The role of feedback in shaping the structure of the interstellar medium.

Distribution of slow and fast rotators in the Fornax cluster (2014)
Journal Article
Scott, N., Davies, R. L., Houghton, R. C. W., Cappellari, M., Graham, A. W., & Pimbblet, K. A. (2014). Distribution of slow and fast rotators in the Fornax cluster. Monthly notices of the Royal Astronomical Society, 441(1), 274-288. https://doi.org/10.1093/mnras/stu472

We present integral field spectroscopy of 10 early-type galaxies in the nearby, low-mass, Fornax cluster, from which we derive spatially resolved stellar kinematics. Based on the morphologies of their stellar velocity maps we classify 2/10 galaxies a... Read More about Distribution of slow and fast rotators in the Fornax cluster.

Barium isotopic composition of mainstream silicon carbides from Murchison : constraints for s-process nucleosynthesis in asymptotic giant branch stars (2014)
Journal Article
Savina, M. R., Pellin, M. J., Willingham, D. G., Pignatari, M., Bisterzo, S., Cristallo, S., Dauphas, N., Davis, A. M., Gallino, R., Gyngard, F., Herwig, F., Liu, N., Pellin, M. J., Savina, M., Straniero, O., & Willingham, D. (2014). Barium isotopic composition of mainstream silicon carbides from Murchison : constraints for s-process nucleosynthesis in asymptotic giant branch stars. The Astrophysical journal, 786(1), 66. https://doi.org/10.1088/0004-637x/786/1/66

We present barium, carbon, and silicon isotopic compositions of 38 acid-cleaned presolar SiC grains from Murchison. Comparison with previous data shows that acid washing is highly effective in removing barium contamination. Strong depletions in δ(138... Read More about Barium isotopic composition of mainstream silicon carbides from Murchison : constraints for s-process nucleosynthesis in asymptotic giant branch stars.

Galaxy And Mass Assembly (GAMA): testing galaxy formation models through the most massive galaxies in the Universe (2014)
Journal Article
Oliva-Altamirano, P., Brough, S., Lidman, C., Couch, W. J., Hopkins, A. M., Colless, M., Taylor, E., Robotham, A. S. G., Gunawardhana, M. L. P., Ponman, T., Baldry, I., Bauer, A. E., Bland-Hawthorn, J., Cluver, M., Cameron, E., Conselice, C. J., Driver, S., Edge, A. C., Graham, A. W., van Kampen, E., …Sharp, R. G. (2014). Galaxy And Mass Assembly (GAMA): testing galaxy formation models through the most massive galaxies in the Universe. Monthly notices of the Royal Astronomical Society, 440(1), 762-775. https://doi.org/10.1093/mnras/stu277

We have analysed the growth of Brightest Group Galaxies and Brightest Cluster Galaxies (BGGs/BCGs) over the last 3 billion years using a large sample of 883 galaxies from the Galaxy And Mass Assembly survey. By comparing the stellar mass of BGGs and... Read More about Galaxy And Mass Assembly (GAMA): testing galaxy formation models through the most massive galaxies in the Universe.

Galaxy and Mass Assembly (GAMA) : fine filaments of galaxies detected within voids (2014)
Journal Article
Alpaslan, M., Robotham, A. S., Obreschkow, D., Penny, S., Driver, S., Norberg, P., Brough, S., Brown, M., Cluver, M., Holwerda, B. W., Hopkins, A. M., van Kampen, E., Kelvin, L. S., Lara-Lopez, M. A., Liske, J., Loveday, J., Mahajan, S., & Pimbblet, K. (2014). Galaxy and Mass Assembly (GAMA) : fine filaments of galaxies detected within voids. Monthly notices of the Royal Astronomical Society. Letters, 440(1), L106-L110. https://doi.org/10.1093/mnrasl/slu019

Based on data from the Galaxy and Mass Assembly (GAMA) survey, we report on the discovery of structures that we refer to as ‘tendrils’ of galaxies: coherent, thin chains of galaxies that are rooted in filaments and terminate in neighbouring filaments... Read More about Galaxy and Mass Assembly (GAMA) : fine filaments of galaxies detected within voids.

Constraints on the Galactic bar from the Hercules stream as traced with RAVE across the Galaxy (2014)
Journal Article
Antoja, T., Helmi, A., Dehnen, W., Bienaymé, O., Bland-Hawthorn, J., Famaey, B., Freeman, K., Gibson, B. K., Gilmore, G., Grebel, E. K., Kordopatis, G., Kunder, A., Minchev, I., Munari, U., Navarro, J., Parker, Q., Reid, W. A., Seabroke, G., Siebert, A., Steinmetz, M., …Zwitter, T. (2014). Constraints on the Galactic bar from the Hercules stream as traced with RAVE across the Galaxy. Astronomy and Astrophysics, 563, A60-1-A60-17. https://doi.org/10.1051/0004-6361/201322623

Non-axisymmetries in the Galactic potential (spiral arms and bar) induce kinematic groups such as the Hercules stream. Assuming that Hercules is caused by the effects of the outer Lindblad resonance of the Galactic bar, we model analytically its prop... Read More about Constraints on the Galactic bar from the Hercules stream as traced with RAVE across the Galaxy.

Ni62(n,γ) and Ni63(n,γ) cross sections measured at the n_TOF facility at CERN (2014)
Journal Article
Lederer, C., Massimi, C., Berthoumieux, E., Colonna, N., Dressler, R., Guerrero, C., Gunsing, F., Käppeler, F., Kivel, N., Pignatari, M., Reifarth, R., Schumann, D., Wallner, A., Altstadt, S., Andriamonje, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., …Tassan-Got, L. (2014). Ni62(n,γ) and Ni63(n,γ) cross sections measured at the n_TOF facility at CERN. Physical Review C - Nuclear Physics, 89(2), Article 025810. https://doi.org/10.1103/physrevc.89.025810

The cross section of the Ni62(n,γ) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n-TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200 keV neutron energy and Maxwellian averaged cross... Read More about Ni62(n,γ) and Ni63(n,γ) cross sections measured at the n_TOF facility at CERN.

Photometric studies of Abell 1664: the subtle effect a minor merger has on cluster galaxies (2014)
Journal Article
Kleiner, D., Pimbblet, K. A., Owers, M. S., Jones, D. H., & Stephenson, A. P. (2014). Photometric studies of Abell 1664: the subtle effect a minor merger has on cluster galaxies. Monthly notices of the Royal Astronomical Society, 439(3), 2755-2764. https://doi.org/10.1093/mnras/stu131

A combination of BRI photometry and archival Chandra X-ray data have been used to analyse the effects a minor merger has on the galaxy population of A1664. We utilize adaptive smoothing techniques in the 2D spatial distribution of cluster galaxies to... Read More about Photometric studies of Abell 1664: the subtle effect a minor merger has on cluster galaxies.

Chemical abundances in bright giants of the globular cluster M62 (NGC 6266) (2014)
Journal Article
Yong, D., Alves Brito, A., Da Costa, G. S., Alonso-García, J., Karakas, A. I., Pignatari, M., Roederer, I. U., Aoki, W., Fishlock, C. K., Grundahl, F., & Norris, J. E. (2014). Chemical abundances in bright giants of the globular cluster M62 (NGC 6266). Monthly notices of the Royal Astronomical Society, 439(3), 2638-2650. https://doi.org/10.1093/mnras/stu118

With the exception of Terzan 5, all the Galactic globular clusters that possess significant metallicity spreads, such as ω Cen and M22, are preferentially the more luminous clusters with extended horizontal branches. Here we present radial velocities... Read More about Chemical abundances in bright giants of the globular cluster M62 (NGC 6266).

Galaxy and mass assembly (GAMA): UgrizYJHK sérsic luminosity functions and the cosmic spectral energy distribution by hubble type (2014)
Journal Article
Kelvin, L. S., Driver, S. P., Robotham, A. S. G., Graham, A. W., Phillipps, S., Agius, N. K., Alpaslan, M., Baldry, I., Bamford, S. P., Bland-Hawthorn, J., Brough, S., Brown, M. J. I., Colless, M., Conselice, C. J., Hopkins, A. M., Liske, J., Loveday, J., Norberg, P., Pimbblet, K. A., Popescu, C. C., …Tuffs, R. J. (2014). Galaxy and mass assembly (GAMA): UgrizYJHK sérsic luminosity functions and the cosmic spectral energy distribution by hubble type. Monthly notices of the Royal Astronomical Society, 439(2), 1245-1269. https://doi.org/10.1093/mnras/stt2391

We report the morphological classification of 3727 galaxies from the Galaxy and Mass Assembly survey with M r < -17.4 mag and in the redshift range 0.025 < z < 0.06 (2.1 × 10 5 Mpc 3 ) into E, S0-Sa, SB0-SBa, Sab-Scd, SBab-SBcd, Sd-Irr and little... Read More about Galaxy and mass assembly (GAMA): UgrizYJHK sérsic luminosity functions and the cosmic spectral energy distribution by hubble type.

Constraining isocurvature perturbations with the 21 cm emission from minihaloes (2014)
Journal Article
Takeuchi, Y., & Chongchitnan, S. (2014). Constraining isocurvature perturbations with the 21 cm emission from minihaloes. Monthly notices of the Royal Astronomical Society, 439(1), 1125-1135. https://doi.org/10.1093/mnras/stu059

We investigate the effects of isocurvature perturbations on the 21 cm radiation from minihaloes (MHs) at high redshifts and examine constraints on the isocurvature amplitude and power spectrum using the next generation of radio telescopes such as the... Read More about Constraining isocurvature perturbations with the 21 cm emission from minihaloes.

A RAVE investigation on Galactic open clusters: I. Radial velocities and metallicities (2014)
Journal Article
Conrad, C., Scholz, R.-D., Kharchenko, N. V., Piskunov, A. E., Schilbach, E., Röser, S., Boeche, C., Kordopatis, G., Siebert, A., Williams, M., Munari, U., Matijevič, G., Grebel, E. K., Zwitter, T., De Jong, R. S., Steinmetz, M., Gilmore, G., Seabroke, G., Freeman, K., Navarro, J. F., …Siviero, A. (2014). A RAVE investigation on Galactic open clusters: I. Radial velocities and metallicities. Astronomy and Astrophysics, 562, A54. https://doi.org/10.1051/0004-6361/201322070

Context. Galactic open clusters (OCs) mainly belong to the young stellar population in the Milky Way disk, but are there groups and complexes of OCs that possibly define an additional level in hierarchical star formation? Current compilations are too... Read More about A RAVE investigation on Galactic open clusters: I. Radial velocities and metallicities.

The RAVE survey: the Galactic escape speed and the mass of the Milky Way (2014)
Journal Article
Scholz, R.-D., Williams, M. E., Matijevič, G., Bienaymé, O., Wyse, R. F., Piffl, T., Scannapieco, C., Binney, J., Steinmetz, M., Scholz, R. .-D., Williams, M. E. K., De Jong, R. S., Kordopatis, G., Matijevic, G., Bienayme, O., Bland-Hawthorn, J., Boeche, C., Freeman, K., Gibson, B., Gilmore, G., …Zwitter, T. (2014). The RAVE survey: the Galactic escape speed and the mass of the Milky Way. Astronomy and Astrophysics, 562, A91. https://doi.org/10.1051/0004-6361/201322531

We made new estimates of the Galactic escape speed at various Galactocentric radii using the latest data release of the RAdial Velocity Experiment (RAVE DR4). Compared to previous studies we have a database that is larger by a factor of 10, as well a... Read More about The RAVE survey: the Galactic escape speed and the mass of the Milky Way.

How typical is the Coma cluster? (2014)
Journal Article
Pimbblet, K. A., Penny, S. J., & Davies, R. L. (2014). How typical is the Coma cluster?. Monthly notices of the Royal Astronomical Society, 438(4), 3049-3057. https://doi.org/10.1093/mnras/stt2411

Coma is frequently used as the archetype z ∼ 0 galaxy cluster to compare higher redshift work against. It is not clear, however, how representative the Coma cluster is for galaxy clusters of its mass or X-ray luminosity, and significantly, recent wor... Read More about How typical is the Coma cluster?.

The environmental dependence of neutral hydrogen in the GIMIC simulations (2014)
Journal Article
Cunnama, D., Andrianomena, S., Cress, C. M., Faltenbacher, A., Gibson, B. K., & Theuns, T. (2014). The environmental dependence of neutral hydrogen in the GIMIC simulations. Monthly notices of the Royal Astronomical Society, 438(3), 2530-2537. https://doi.org/10.1093/mnras/stt2380

We use the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) cosmological hydrodynamic simulation at z = 0 to study the distribution and environmental dependence of neutral hydrogen (H I) gas in the outskirts of simulated galaxies. This g... Read More about The environmental dependence of neutral hydrogen in the GIMIC simulations.

A new stellar chemo-kinematic relation reveals the merger history of the milky way disk (2014)
Journal Article
Minchev, I., Chiappini, C., Martig, M., Steinmetz, M., De Jong, R. S., Boeche, C., Scannapieco, C., Zwitter, T., Wyse, R. F. G., Binney, J. J., Bland-Hawthorn, J., Bienaymé, O., Famaey, B., Freeman, K. C., Gibson, B. K., Grebel, E. K., Gilmore, G., Helmi, A., Kordopatis, G., Lee, Y. S., …Williams, M. (2014). A new stellar chemo-kinematic relation reveals the merger history of the milky way disk. Astrophysical journal. Letters, 781(1), L20. https://doi.org/10.1088/2041-8205/781/1/l20

The velocity dispersions of stars near the Sun are known to increase with stellar age, but age can be difficult to determine, so a proxy like the abundance of α elements (e.g., Mg) with respect to iron, [α/Fe], is used. Here we report an unexpected b... Read More about A new stellar chemo-kinematic relation reveals the merger history of the milky way disk.

Observationally-motivated analysis of simulated galaxies (2014)
Presentation / Conference Contribution
Gibson, B. K., MacFarlane, B. A., & Miranda, M. S. Observationally-motivated analysis of simulated galaxies. Presented at Proceedings of Science

© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. The spatial and temporal relationships between stellar age, kinematics, and chemistry are a fundamental tool for uncovering the p... Read More about Observationally-motivated analysis of simulated galaxies.

Cloud angular momentum and effective viscosity in global SPH simulations with feedback (2014)
Journal Article
Williamson, D. J., Thacker, R. J., Wurster, J., & Gibson, B. K. (2014). Cloud angular momentum and effective viscosity in global SPH simulations with feedback. Monthly notices of the Royal Astronomical Society, 442(4), 3674-3685. https://doi.org/10.1093/mnras/stu1121

We examine simulations of isolated galaxies to analyse the effects of localized feedback on the formation and evolution of molecular clouds. Feedback contributes to turbulence and the destruction of clouds, leading to a population of clouds that is y... Read More about Cloud angular momentum and effective viscosity in global SPH simulations with feedback.

Numerical simulations of bubble-induced star formation in dwarf irregular galaxies with a novel stellar feedback scheme (2013)
Journal Article
Kawata, D., Gibson, B. K., Barnes, D. J., Grand, R. J., & Rahimi, A. (2014). Numerical simulations of bubble-induced star formation in dwarf irregular galaxies with a novel stellar feedback scheme. Monthly notices of the Royal Astronomical Society, 438(2), 1208-1222. https://doi.org/10.1093/mnras/stt2267

To study the star formation and feedback mechanism, we simulate the evolution of an isolated dwarf irregular galaxy (dIrr) in a fixed dark matter halo, similar in size to Wolf–Lundmark–Melotte, using a new stellar feedback scheme. We use the new vers... Read More about Numerical simulations of bubble-induced star formation in dwarf irregular galaxies with a novel stellar feedback scheme.