Michael Pracy
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View article: The HI content of star-forming galaxies at z = 0.24
The HI content of star-forming galaxies at z = 0.24 Open
We use observations from the Giant Metrewave Radio Telescope (GMRT) to measure the atomic hydrogen gas content of star-forming galaxies at z = 0.24 (i.e. a look-back time of ~3 Gyr). The sample of galaxies studied were selected from Hα-emi…
View article: Normal galaxies in the XMM-Newton fields: x-rays as a star formation indicator
Normal galaxies in the XMM-Newton fields: x-rays as a star formation indicator Open
Context: We use the first XMM serendipitous source catalogue (1XMM) to compile a sample of normal X-ray galaxies Aims: We seek to expand the database of X-ray selected normal galaxies at intermediate redshifts and examine the relation betw…
View article: Stellar population gradients in the cores of nearby field E+A galaxies
Stellar population gradients in the cores of nearby field E+A galaxies Open
We have selected a sample of local E+A galaxies from the Sloan Digital Sky Survey (SDSS) Data Release 7 for follow-up integral field spectroscopy with the Wide Field Spectrograph (WiFeS) on the Australian National University's (ANU) 2.3-m …
View article: The WiggleZ Dark Energy Survey: the transition to large-scale cosmic homogeneity
The WiggleZ Dark Energy Survey: the transition to large-scale cosmic homogeneity Open
We have made the largest volume measurement to date of the transition to large-scale homogeneity in the distribution of galaxies. We use the WiggleZ survey, a spectroscopic survey of over 200 000 blue galaxies in a cosmic volume of ∼1 h−3 …
View article: The 2dF galaxy redshift survey: The local E+A galaxy population
The 2dF galaxy redshift survey: The local E+A galaxy population Open
We select a sample of low-redshift (z ∼ 0.1) E+A galaxies from the 2dF Galaxy Redshift Survey (2dFGRS). The spectra of these objects are defined by strong hydrogen Balmer absorption lines (Hδ, Hγ, Hβ) combined with a lack of [O II] 3727-Å …
View article: The WiggleZ Dark Energy Survey: Testing the cosmological model with baryon acoustic oscillations at z= 0.6
The WiggleZ Dark Energy Survey: Testing the cosmological model with baryon acoustic oscillations at z= 0.6 Open
We measure the imprint of baryon acoustic oscillations (BAOs) in the galaxy clustering pattern at the highest redshift achieved to date, z= 0.6, using the distribution of N= 132 509 emission-line galaxies in the WiggleZ Dark Energy Survey.…
View article: The WiggleZ Dark Energy Survey: high-resolution kinematics of luminous star-forming galaxies
The WiggleZ Dark Energy Survey: high-resolution kinematics of luminous star-forming galaxies Open
We report evidence of ordered orbital motion in luminous star-forming galaxies at z∼ 1.3. We present integral field spectroscopy (IFS) observations, performed with the OH Suppressing InfraRed Imaging Spectrograph (OSIRIS) system, assisted …
View article: The WiggleZ Dark Energy Survey: The growth rate of cosmic structure since redshift z=0.9
The WiggleZ Dark Energy Survey: The growth rate of cosmic structure since redshift z=0.9 Open
We present precise measurements of the growth rate of cosmic structure for the redshift range 0.1 < z < 0.9, using redshift-space distortions in the galaxy power spectrum of the WiggleZ Dark Energy Survey. Our results, which have a precisi…
View article: The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters
The SAMI Pilot Survey: The fundamental and mass planes in three low-redshift clusters Open
Using new integral field observations of 106 galaxies in three nearby clusters, we investigate how the intrinsic scatter of the Fundamental Plane depends on the way in which the velocity dispersion and effective radius are measured. Our sp…
View article: The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups
The SAMI Galaxy Survey: observing the environmental quenching of star formation in GAMA groups Open
We explore the radial distribution of star formation in galaxies in the SAMI Galaxy Survey as a function of their Local Group environment. Using a sample of galaxies in groups (with halo masses less than similar or equal to 10(14) M-circle…
View article: The WiggleZ Dark Energy Survey: final data release and the metallicity of UV-luminous galaxies
The WiggleZ Dark Energy Survey: final data release and the metallicity of UV-luminous galaxies Open
The WiggleZ Dark Energy Survey measured the redshifts of over 200 000 ultraviolet (UV)- selected (NUV < 22.8 mag) galaxies on the Anglo-Australian Telescope. The survey detected the baryon acoustic oscillation signal in the large-scale dis…
View article: Galaxy And Mass Assembly (GAMA): the environments of high- and low-excitation radio galaxies
Galaxy And Mass Assembly (GAMA): the environments of high- and low-excitation radio galaxies Open
We study the environments of low- and high- excitation radio galaxies (LERGs\nand HERGs respectively) in the redshift range $0.01 < z < 0.4$, using a sample\nof 399 radio galaxies and environmental measurements from the Galaxy And Mass\nAs…
View article: The SAMI Galaxy Survey: the cluster redshift survey, target selection and cluster properties
The SAMI Galaxy Survey: the cluster redshift survey, target selection and cluster properties Open
We describe the selection of galaxies targeted in eight low-redshift clusters (APMCC0917, A168, A4038, EDCC442, A3880, A2399, A119 and A85; 0.029 < z < 0.058) as part of the Sydney-AAO Multi-Object Integral field spectrograph Galaxy Survey…
View article: Spatially resolved star formation relation in two HI-rich galaxies with central post-starburst signature
Spatially resolved star formation relation in two HI-rich galaxies with central post-starburst signature Open
E+A galaxies are post-starburst systems that are identified from their\noptical spectra. These galaxies contain a substantial young A-type stellar\ncomponent, but have only little ongoing star formation (SF). HI 21-cm line\nemission is fou…
View article: Measuring the 2D baryon acoustic oscillation signal of galaxies in WiggleZ: cosmological constraints
Measuring the 2D baryon acoustic oscillation signal of galaxies in WiggleZ: cosmological constraints Open
We present results from the 2D anisotropic baryon acoustic oscillation (BAO) signal present in the final data set from the WiggleZ Dark Energy Survey. We analyse the WiggleZ data in two ways: first using the full shape of the 2D correlatio…
View article: The Large Area Radio Galaxy Evolution Spectroscopic Survey (LARGESS): survey design, data catalogue and GAMA/WiggleZ spectroscopy
The Large Area Radio Galaxy Evolution Spectroscopic Survey (LARGESS): survey design, data catalogue and GAMA/WiggleZ spectroscopy Open
We present the Large Area Radio Galaxy Evolution Spectroscopic Survey (LARGESS), a spectroscopic catalogue of radio sources designed to include the full range of radio AGN populations out to redshift z = 0.8. The catalogue covers roughly 8…
View article: The SAMI Galaxy Survey: spatially resolving the environmental quenching of star formation in GAMA galaxies
The SAMI Galaxy Survey: spatially resolving the environmental quenching of star formation in GAMA galaxies Open
We use data from the Sydney-AAO Multi-Object Integral Field Spectrograph Galaxy Survey and the Galaxy And Mass Assembly (GAMA) survey to investigate the spatially resolved signatures of the environmental quenching of star formation in gala…
View article: GAMA/WiggleZ: the 1.4 GHz radio luminosity functions of high- and low-excitation radio galaxies and their redshift evolution to<i>z</i>= 0.75
GAMA/WiggleZ: the 1.4 GHz radio luminosity functions of high- and low-excitation radio galaxies and their redshift evolution to<i>z</i>= 0.75 Open
We present radio Active Galactic Nuclei (AGN) luminosity functions over the\nredshift range 0.005 < z < 0.75. The sample from which the luminosity functions\nare constructed is an optical spectroscopic survey of radio galaxies,\nidentified…
View article: A search for H i and OH absorption in<i>z</i>≳ 3 CO emitters
A search for H i and OH absorption in<i>z</i>≳ 3 CO emitters Open
We present the results of a survey for H i 21 cm and OH 18 cm absorption in seven strong CO emitters at z ≳ 3. Despite reaching limits comparable to those required to detect 21 cm absorption at lower redshifts, we do not detect either…
View article: H i emission and absorption in nearby, gas-rich galaxies – II. Sample completion and detection of intervening absorption in NGC 5156
H i emission and absorption in nearby, gas-rich galaxies – II. Sample completion and detection of intervening absorption in NGC 5156 Open
We present the results of a survey for intervening 21 cm H i absorption in a sample of 10 nearby, gas-rich galaxies selected from the H i Parkes All-Sky Survey (HIPASS). This follows the six HIPASS galaxies searched in previous work and co…
View article: Resolved Gas Kinematics in a Sample of Low-Redshift High Star-Formation Rate Galaxies
Resolved Gas Kinematics in a Sample of Low-Redshift High Star-Formation Rate Galaxies Open
We have used integral field spectroscopy of a sample of six nearby ( z ~ 0.01–0.04) high star-formation rate ( $\text{SFR} \sim 10\hbox{--}40$ $\text{M}_\odot \text{ yr$^{-1}$}$ ) galaxies to investigate the relationship between local velo…
View article: Erratum: Discovery of H i gas in a young radio galaxy at $\boldsymbol {z = 0.44}$ using the Australian Square Kilometre Array Pathfinder
Erratum: Discovery of H i gas in a young radio galaxy at $\boldsymbol {z = 0.44}$ using the Australian Square Kilometre Array Pathfinder Open
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View article: The SAMI Pilot Survey: stellar kinematics of galaxies in Abell 85, 168 and 2399
The SAMI Pilot Survey: stellar kinematics of galaxies in Abell 85, 168 and 2399 Open
We present the SAMI Pilot Survey, consisting of integral field spectroscopy\nof 106 galaxies across three galaxy clusters, Abell 85, Abell 168 and Abell\n2399. The galaxies were selected by absolute magnitude to have $M_r<-20.25$\nmag. The…
View article: Discovery of H i gas in a young radio galaxy at z = 0.44 using the Australian Square Kilometre Array Pathfinder
Discovery of H i gas in a young radio galaxy at z = 0.44 using the Australian Square Kilometre Array Pathfinder Open
We report the discovery of a new 21-cm HI absorption system using commissioning data from the Boolardy Engineering Test Array of the Australian Square Kilometre Array Pathfinder (ASKAP). Using the 711.5-1015.5 MHz band of ASKAP we were abl…
View article: The SAMI Pilot Survey: the fundamental and mass planes in three low-redshift clusters
The SAMI Pilot Survey: the fundamental and mass planes in three low-redshift clusters Open
© 2015 The Authors. Using new integral field observations of 106 galaxies in three nearby clusters, we investigate how the intrinsic scatter of the Fundamental Plane depends on the way in which the velocity dispersion and effective radius …
View article: H i emission and absorption in nearby, gas-rich galaxies
H i emission and absorption in nearby, gas-rich galaxies Open
We present the results of a targeted search for intervening H i absorption in six nearby, gas-rich galaxies using the Australia Telescope Compact Array. The sightlines searched have impact parameters of 10–20 kpc. By targeting nearby galax…
View article: The SAMI Galaxy Survey: instrument specification and target selection
The SAMI Galaxy Survey: instrument specification and target selection Open
The SAMI Galaxy Survey will observe 3400 galaxies with the Sydney-AAO Multi-object Integral-field spectrograph (SAMI) on the Anglo-Australian Telescope in a 3-yr survey which began in 2013. We present the throughput of the SAMI system, the…
View article: VizieR Online Data Catalog: SAMI Galaxy Survey: EDR (Allen+, 2015)
VizieR Online Data Catalog: SAMI Galaxy Survey: EDR (Allen+, 2015) Open
The targets for the SAMI Galaxy Survey are drawn from the GAMA survey G09, G12 and G15 fields, as well as a set of eight galaxy clusters that extend the survey to higher environmental densities. All candidates have known redshifts from GAM…