Publications (23)
The ugrizYJHK luminosity distributions and densities from the combined MGC, SDSS and UKIDSS LAS datasets
David T. Hill, Simon P. Driver, Ewan Cameron +3
We combine data from the MGC, SDSS and UKIDSS LAS surveys to produce ugrizYJHK luminosity functions and densities from within a common, low redshift volume (z<0.1, ~71,000 h_1^-3 M…
The 2dF Galaxy Redshift Survey: The environmental dependence of galaxy star formation rates near clusters
Ian Lewis, Michael Balogh, Roberto De Propris +30
We have measured the equivalent width of the H-alpha emission line for 11006 galaxies brighter than M_b=-19 (LCDM) at 0.05<z<0.1 in the 2dF Galaxy Redshift Survey (2dF), in the fie…
Recalibration of Data in the VDFS Science Archives
Nicholas Cross, Nigel Hambly, Ross Collins +2
The VDFS comprises the system to pipeline process and archive the data from infrared observations taken by both the WFCAM instrument on UKIRT and the forthcoming VISTA telescope. T…
Extinction Maps in the WFAU Archives
Nicholas Cross, Mike Read
A brief set of notes about the database design for 3D maps of dust extinction in the WFAU Archives, which support data from UKIRT-WFCAM, VISTA and VST. The notes also detail typica…
The Parameter Space Occupied by Galaxies: The Optical Window
Simon P. Driver, Nicholas Cross
We discuss the optical parameter space (luminosity and surface brightness) over which galaxies are known to exist and report on the results from three recent datasets: the Two-degr…
The 2dF Galaxy Redshift Survey: The Number and Luminosity Density of Galaxies
Nicholas Cross, Simon P. Driver, Warrick Couch +29
We present the bivariate brightness distribution (BBD) for the 2dF Galaxy Redshift Survey (2dFGRS) based on a preliminary subsample of 45,000 galaxies. The BBD is an extension of t…
The 2dF Galaxy Redshift Survey: Near Infrared Galaxy Luminosity Functions
Shaun Cole, Peder Norberg, Carlton Baugh +24
We combine the 2MASS extended source catalogue and the 2dFGRS to produce an IR selected galaxy catalogue with 17,173 measured redshifts. We use this extensive dataset to estimate t…
Automated curation of infra-red imaging data in the WFCAM and VISTA Science Archives
Nicholas Cross, Ross Collins, Echhard Sutorius +3
The two fastest near infrared survey telescopes are UKIRT-WFCAM and VISTA. The data from both these instruments are being archived by Wide Field Astronomy Unit (WFAU) at the IfA, E…
Substructure Analysis of Selected Low Richness 2dFGRS Clusters of Galaxies
William S. Burgett, Michael M. Vick, David S. Davis +30
Complementary one-, two-, and three-dimensional tests for detecting the presence of substructure in clusters of galaxies are applied to recently obtained data from the 2dF Galaxy R…
INT-WFS + 2dFGRS: The Local Space & Luminosity Density
Nicholas Cross, Simon Driver, David Lemon
We discuss the quantification of the local galaxy population and the impact of the ``New Era of Wide-Field Astronomy'' on this field, and, in particular, systematic errors in the m…
A new model for archiving synoptic data in the VISTA Data Flow System
Nicholas Cross, Ross Collins, Nigel Hambly +2
The VISTA Data Flow System comprises nightly pipeline and archiving of near infrared data from UKIRT-WFCAM and VISTA. This includes multi-epoch data which can be used to find movin…
The 2dF Galaxy Redshift Survey: A targeted study of catalogued clusters of galaxies
Roberto De Propris, Warrick Couch, Matthew Colless +27
We have carried out a study of known clusters within the 2dF Galaxy Redshift Survey (2dFGRS) observed areas and have identified 431 Abell, 173 APM and 343 EDCC clusters. Precise re…
Exploring the Universe via the Wide, Deep Near-infrared Imaging ESO Public Survey SHARKS
Helmut Dannerbauer, Aurelio Carnero, Nicholas Cross +1
The ESO Public Survey Southern H-ATLAS Regions Ks-band Survey (SHARKS) comprises 300 square degrees of deep imaging at 2.2 microns (the Ks band) with the VISTA InfraRed CAMera (VIR…
Galaxy and Mass Assembly (GAMA): FUV, NUV, ugrizYJHK Petrosian, Kron and Sèrsic photometry
David T. Hill, Lee S. Kelvin, Simon P. Driver +33
In order to generate credible 0.1-2 μm SEDs, the GAMA project requires many Gigabytes of imaging data from a number of instruments to be re-processed into a standard format. In th…
KiDS+VIKING-450: A new combined optical & near-IR dataset for cosmology and astrophysics
Angus H. Wright, Hendrik Hildebrandt, Konrad Kuijken +22
We present the curation and verification of a new combined optical and near infrared dataset for cosmology and astrophysics, derived from the combination of -band imaging fro…
VISTA Variables in the VÃa Láctea (VVV): Halfway Status and Results
Maren Hempel, Dante Minniti, István Dékány +89
The VISTA Variables in the VÃa Láctea (VVV) survey is one of six public ESO surveys, and is now in its 4th year of observing. Although far from being complete, the VVV survey has…
Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS
Michael Balogh, Vince Eke, Chris Miller +34
We analyse the observed correlation between galaxy environment and H-alpha emission line strength, using volume-limited samples and group catalogues of 24968 galaxies drawn from th…
High conduction hopping behavior induced in transition metal dichalcogenides by percolating defect networks: toward atomically thin circuits
Michael G. Stanford, Pushpa R. Pudasaini, Elisabeth T. Gallmeier +11
Atomically thin circuits have recently been explored for applications in next-generation electronics and optoelectronics and have been demonstrated with two-dimensional lateral het…
Variations in the Bivariate Brightness Distribution with different galaxy types
Nicholas Cross, Simon Driver, David Lemon +1
We present Bivariate Brightness Distributions (BBDs) for four spectral types discriminated by the 2dFGRS. We discuss the photometry and completeness of the 2dFGRS using a deep, wid…
The Luminosity Function of E/S0 Galaxies at 0.5<z<1.0
Nicholas Cross, the ACS Science Team
We measure the luminosity function of morphologically selected E/S0 galaxies from z=0.5 to z=1.0 using deep high resolution Advanced Camera for Surveys (ACS) imaging data. Our data…
A pseudo-parallel Python environment for database curation
Eckhard Sutorius, Johann Bryant, Ross Collins +3
One of the major challenges providing large databases like the WFCAM Science Archive (WSA) is to minimize ingest times for pixel/image metadata and catalogue data. In this article…
The 2dF Galaxy Redshift Survey: The blue galaxy fraction and implications for the Butcher-Oemler effect
Roberto De Propris, Matthew Colless, John Peacock +28
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…
The 2dF Galaxy Redshift Survey: Final Data Release
Matthew Colless, Bruce A. Peterson, Carole Jackson +25
The 2dF Galaxy Redshift Survey (2dFGRS) has obtained spectra for 245591 sources, mainly galaxies, brighter than a nominal extinction-corrected magnitude limit of b_J=19.45. Reliabl…