All Outputs (20)

Galaxy and Mass Assembly (GAMA): Defining passive galaxy samples and searching for the UV upturn (2019)
Journal Article
Phillipps, S., Ali, S. S., Bremer, M. N., de Propris, R., Sansom, A. E., Cluver, M. E., Alpaslan, M., Brough, S., Brown, M. J., Davies, L. J., Driver, S. P., Grootes, M. W., Holwerda, B. W., Hopkins, A. M., James, P. A., Pimbblet, K., Robotham, A. S., Taylor, E. N., & Wang, L. (2020). Galaxy and Mass Assembly (GAMA): Defining passive galaxy samples and searching for the UV upturn. Monthly notices of the Royal Astronomical Society, 492(2), 2128-2139. https://doi.org/10.1093/mnras/stz3552

© 2019 The Author(s) We use data from the GAMA and GALEX surveys to demonstrate that the UV upturn, an unexpected excess of ultraviolet flux from a hot stellar component, seen in the spectra of many early-type galaxies, arises from processes internal... Read More about Galaxy and Mass Assembly (GAMA): Defining passive galaxy samples and searching for the UV upturn.

A pulsar-based time-scale from the International Pulsar Timing Array (2019)
Journal Article
Hobbs, G., Guo, L., Caballero, R. N., Coles, W., Lee, K. J., Manchester, R. N., Reardon, D. J., Matsakis, D., Tong, M. L., Arzoumanian, Z., Bailes, M., Bassa, C. G., Bhat, N. D., Brazier, A., Burke-Spolaor, S., Champion, D. J., Chatterjee, S., Cognard, I., Dai, S., Desvignes, G., …Zhu, X. J. (2020). A pulsar-based time-scale from the International Pulsar Timing Array. Monthly notices of the Royal Astronomical Society, 491(4), 5951-5965. https://doi.org/10.1093/mnras/stz3071

We have constructed a new time-scale, TT(IPTA16), based on observations of radio pulsars presented in the first data release from the International Pulsar Timing Array (IPTA). We used two analysis techniques with independent estimates of the noise mo... Read More about A pulsar-based time-scale from the International Pulsar Timing Array.

Galaxy and Mass Assembly (GAMA): Properties and evolution of red spiral galaxies (2019)
Journal Article
Mahajan, S., Gupta, K. K., Rana, R., Brown, M. J. I., Phillipps, S., Bland-Hawthorn, J., Bremer, M. N., Brough, S., Holwerda, B. W., Hopkins, A. M., Loveday, J., Pimbblet, K., & Wang, L. (2020). Galaxy and Mass Assembly (GAMA): Properties and evolution of red spiral galaxies. Monthly notices of the Royal Astronomical Society, 491(1), 398-408. https://doi.org/10.1093/mnras/stz2993

We use multi-wavelength data from the Galaxy and Mass Assembly (GAMA) survey to explore the cause of red optical colours in nearby (0.002 < z < 0.06) spiral galaxies. We show that the colours of red spiral galaxies are a direct consequence of some en... Read More about Galaxy and Mass Assembly (GAMA): Properties and evolution of red spiral galaxies.

The rotational profiles of cluster galaxies (2019)
Journal Article
Bilton, L. E., Hunt, M., Pimbblet, K. A., & Roediger, E. (2019). The rotational profiles of cluster galaxies. Monthly notices of the Royal Astronomical Society, 490(4), 5017-5032. https://doi.org/10.1093/mnras/stz2927

© 2019 The Author(s) We compile two samples of cluster galaxies with complimentary hydrodynamic and N-body analysis using FLASH code to ascertain how their differing populations drive their rotational profiles and to better understand their dynamical... Read More about The rotational profiles of cluster galaxies.

The International Pulsar Timing Array: second data release (2019)
Journal Article
Perera, B. B., DeCesar, M. E., Demorest, P. B., Kerr, M., Lentati, L., Nice, D. J., Osłowski, S., Ransom, S. M., Keith, M. J., Arzoumanian, Z., Bailes, M., Baker, P. T., Bassa, C. G., Bhat, N. D., Brazier, A., Burgay, M., Burke-Spolaor, S., Caballero, R. N., Champion, D. J., Chatterjee, S., …Zhu, X. J. (2019). The International Pulsar Timing Array: second data release. Monthly notices of the Royal Astronomical Society, 490(4), 4666-4687. https://doi.org/10.1093/mnras/stz2857

In this paper, we describe the International Pulsar Timing Array second data release, which includes recent pulsar timing data obtained by three regional consortia: the European Pulsar Timing Array, the North American Nanohertz Observatory for Gravit... Read More about The International Pulsar Timing Array: second data release.

Lexicon-based bot-aware public emotion mining and sentiment analysis of the Nigerian 2019 presidential election on Twitter (2019)
Journal Article
Fagbola, T. M., & Thakur, S. C. (2019). Lexicon-based bot-aware public emotion mining and sentiment analysis of the Nigerian 2019 presidential election on Twitter. International journal of advanced computer science and applications : IJACSA, 10(10), 329-336. https://doi.org/10.14569/ijacsa.2019.0101047

Online social networks have been widely engaged as rich potential platforms to predict election outcomes' in several countries of the world. The vast amount of readily-available data on such platforms, coupled with the emerging power of natural langu... Read More about Lexicon-based bot-aware public emotion mining and sentiment analysis of the Nigerian 2019 presidential election on Twitter.

Heterogeneity of inverted calcium II H:K ratio cluster galaxies (2019)
Journal Article
Pimbblet, K. A., Crossett, J. P., & Fraser-McKelvie, A. (2019). Heterogeneity of inverted calcium II H:K ratio cluster galaxies. Monthly notices of the Royal Astronomical Society, 490(1), 455-466. https://doi.org/10.1093/mnras/stz2549

© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society The ratio of calcium II H plus H∊ to calcium II K inverts as a galaxy stellar population moves from being dominated by older stars to possessing mor... Read More about Heterogeneity of inverted calcium II H:K ratio cluster galaxies.

Redshift measurement through star formation (2019)
Journal Article
Lindholmer, M. O., & Pimbblet, K. A. (2019). Redshift measurement through star formation. Astronomy and Astrophysics, 629, Article A7. https://doi.org/10.1051/0004-6361/201833046

© ESO 2019. In this work we use the property that, on average, star formation rate increases with redshift for objects with the same mass - the so called galaxy main sequence - to measure the redshift of galaxy clusters. We use the fact that the gene... Read More about Redshift measurement through star formation.

Star-Forming, Rotating Spheroidal Galaxies in the GAMA and SAMI Surveys (2019)
Journal Article
Moffett, A. J., Phillipps, S., Robotham, A. S. G., Driver, S. P., Bremer, M. N., Cortese, L., Wong, O. I., Brough, S., Brown, M. J. I., Bryant, J. J., Conselice, C. J., Croom, S. M., George, K., Goldstein, G., Goodwin, M., Holwerda, B. W., Hopkins, A. M., Konstantopoulos, I. S., Lawrence, J. S., Lorente, N. P. F., …Van De Sande, J. (2019). Star-Forming, Rotating Spheroidal Galaxies in the GAMA and SAMI Surveys. Monthly notices of the Royal Astronomical Society, 489(2), 2830–2843. https://doi.org/10.1093/mnras/stz2237

The Galaxy And Mass Assembly (GAMA) survey has morphologically identified a class of ‘Little Blue Spheroid’ (LBS) galaxies whose relationship to other classes of galaxies we now examine in detail. Considering a sample of 868 LBSs, we find that such g... Read More about Star-Forming, Rotating Spheroidal Galaxies in the GAMA and SAMI Surveys.

The frequency of dust lanes in edge-on spiral galaxies identified by galaxy Zoo in KiDS Imaging of GAMA Targets (2019)
Journal Article
Holwerda, B. W., Kelvin, L., Baldry, I., Lintott, C., Alpaslan, M., Pimbblet, K. A., Liske, J., Kitching, T., Bamford, S., De Jong, J., Bilicki, M., Hopkins, A., Bridge, J., Steele, R., Jacques, A., Goswami, S., Kusmic, S., Roemer, W., Kruk, S., Popescu, C. C., …Kitching, T. (2019). The frequency of dust lanes in edge-on spiral galaxies identified by galaxy Zoo in KiDS Imaging of GAMA Targets. Astronomical Journal, 158(3), Article 103. https://doi.org/10.3847/1538-3881/ab2886

Dust lanes bisect the plane of a typical edge-on spiral galaxy as a dark optical absorption feature. Their appearance is linked to the gravitational stability of spiral disks; the fraction of edge-on galaxies that displays a dust lane is a direct ind... Read More about The frequency of dust lanes in edge-on spiral galaxies identified by galaxy Zoo in KiDS Imaging of GAMA Targets.

News article classification using Kolmogorov complexity distance measure and artificial neural network (2019)
Journal Article
Fagbola, T. M., Thakur, C. S., & Olugbara, O. (2019). News article classification using Kolmogorov complexity distance measure and artificial neural network. International Journal of Technology, 10(4), 710-720. https://doi.org/10.14716/ijtech.v10i4.2339

News article classification is a recently growing area of interest in text classification because of its associated multiple matching categories. However, the weak reliability indices and ambiguities associated with state-of-the-art classifiers often... Read More about News article classification using Kolmogorov complexity distance measure and artificial neural network.

ASKAP commissioning observations of the GAMA 23 field (2019)
Journal Article
Leahy, D. A., Hopkins, A. M., Norris, R. P., Marvil, J., Collier, J. D., Taylor, E. N., Allison, J. R., Anderson, C., Bell, M., Bilicki, M., Bland-Hawthorn, J., Brough, S., Brown, M. J., Driver, S., Gurkan, G., Harvey-Smith, L., Heywood, I., Holwerda, B. W., Liske, J., Lopez-Sanchez, A. R., …Wang, L. (2019). ASKAP commissioning observations of the GAMA 23 field. Publications / Astronomical Society of Australia, 36, Article e024. https://doi.org/10.1017/pasa.2019.16

© Astronomical Society of Australia 2019. We have observed the G23 field of the Galaxy AndMass Assembly (GAMA) survey using the Australian Square Kilometre Array Pathfinder (ASKAP) in its commissioning phase to validate the performance of the telesco... Read More about ASKAP commissioning observations of the GAMA 23 field.

The effect of minor and major mergers on the evolution of low excitation radio galaxies (2019)
Journal Article
Gordon, Y. A., Pimbblet, K. A., Kaviraj, S., Owers, M. S., O'Dea, C. P., Walmsley, M., Baum, S. A., Crossett, J. P., Fraser-Mckelvie, A., Lintott, C. J., & Pierce, J. C. (2019). The effect of minor and major mergers on the evolution of low excitation radio galaxies. The Astrophysical journal, 878(2), Article 88. https://doi.org/10.3847/1538-4357/ab203f

We use deep, μ r lesssim 28 mag arcsec−2, r-band imaging from the Dark Energy Camera Legacy Survey to search for past, or ongoing, merger activity in a sample of 282 low-excitation radio galaxies (LERGs) at z < 0.07. Our principal aim is to assess t... Read More about The effect of minor and major mergers on the evolution of low excitation radio galaxies.

Water quality modelling of the Mekong River basin: climate change and socioeconomics drive flow and nutrient flux changes to the Mekong Delta (2019)
Journal Article
Whitehead, P. G., Jin, L., Bussi, G., Voepel, H. E., Darby, S. E., Vasilopoulos, G., Manley, R., Rodda, H., Hutton, C., Hackney, C., Tri, V. P. D., & Hung, N. N. (2019). Water quality modelling of the Mekong River basin: climate change and socioeconomics drive flow and nutrient flux changes to the Mekong Delta. Science of the Total Environment, 673, 218-229. https://doi.org/10.1016/j.scitotenv.2019.03.315

The Mekong delta is recognised as one of the world's most vulnerable mega-deltas, being subject to a range of environmental pressures including sea level rise, increasing population, and changes in flows and nutrients from its upland catchment. With... Read More about Water quality modelling of the Mekong River basin: climate change and socioeconomics drive flow and nutrient flux changes to the Mekong Delta.

Evolution of the stellar mass function and infrared luminosity function of galaxies since z = 1.2 (2019)
Journal Article
Beare, R., Brown, M. J., Pimbblet, K., & Taylor, E. N. (2019). Evolution of the stellar mass function and infrared luminosity function of galaxies since z = 1.2. The Astrophysical journal, 873(1), Article 78. https://doi.org/10.3847/1538-4357/ab041a

© 2019. The American Astronomical Society. All rights reserved. We measured evolution of the K-band luminosity function and stellar mass function (SMF) for red and blue galaxies at z < 1.2 using a sample of 353 594 I < 24 galaxies in 8.26 square degr... Read More about Evolution of the stellar mass function and infrared luminosity function of galaxies since z = 1.2.

Can VEGFC Form Turing Patterns in the Zebrafish Embryo? (2019)
Journal Article
Wertheim, K. Y., & Roose, T. (2019). Can VEGFC Form Turing Patterns in the Zebrafish Embryo?. Bulletin of Mathematical Biology, 81(4), 1201-1237. https://doi.org/10.1007/s11538-018-00560-2

This paper is concerned with a late stage of lymphangiogenesis in the trunk of the zebrafish embryo. At 48 hours post-fertilisation (HPF), a pool of parachordal lymphangioblasts (PLs) lies in the horizontal myoseptum. Between 48 and 168 HPF, the PLs... Read More about Can VEGFC Form Turing Patterns in the Zebrafish Embryo?.

Rab-KAMS: A reproducible knowledge management system with visualization for preserving Rabbit Farming and Production Knowledge (2019)
Journal Article
Fagbola, T. M., Thakur, S. C., & Olugbara, O. (2019). Rab-KAMS: A reproducible knowledge management system with visualization for preserving Rabbit Farming and Production Knowledge. International journal of advanced computer science and applications : IJACSA, 10(1), 263-273. https://doi.org/10.14569/IJACSA.2019.0100135

The sudden rise in rural-to-urban migration has been a key challenge threatening food security and most especially the survival of Rabbit Farming and Production (RFP) in Sub-Saharan Africa. Currently, significant knowledge of RFP is going into extinc... Read More about Rab-KAMS: A reproducible knowledge management system with visualization for preserving Rabbit Farming and Production Knowledge.

Investigating the effect of implementation languages and large problem sizes on the tractability and efficiency of sorting algorithms (2019)
Journal Article
Fagbola, T. M., & Thakur, S. C. (2019). Investigating the effect of implementation languages and large problem sizes on the tractability and efficiency of sorting algorithms. International Journal of Engineering Research & Technology, 12(2), 196-203

Sorting is a data structure operation involving a re-arrangement of an unordered set of elements with witnessed real life applications for load balancing and energy conservation in distributed, grid and cloud computing environments. However, the rear... Read More about Investigating the effect of implementation languages and large problem sizes on the tractability and efficiency of sorting algorithms.

TERMHIGEN – A hybrid metaheuristic technique for solving large-scale vehicle routing problem with time windows (2019)
Journal Article
Fagbola, T. M., & Thakur, S. C. (2019). TERMHIGEN – A hybrid metaheuristic technique for solving large-scale vehicle routing problem with time windows. International Journal of Engineering Research & Technology, 12(2), 180-195

Vehicle Routing Problem with Time Windows (VRPTW) involves traversing a coordinated set of vehicular paths such that a set of customers is visited once within a given time-stamped boundary. VRPTW poses a great challenge to logistics distribution and... Read More about TERMHIGEN – A hybrid metaheuristic technique for solving large-scale vehicle routing problem with time windows.

Resolution-aware Ensemble of Pose and Illumination-Invariant Feature Descriptors for Face Identification in Unconstrained Videos (2019)
Journal Article
Fagbola, T. M., & Thakur, C. S. (2019). Resolution-aware Ensemble of Pose and Illumination-Invariant Feature Descriptors for Face Identification in Unconstrained Videos. International Journal of Engineering Research & Technology, 12(12), 3114-3126

The recurring global security insurgence has posed new opportunities for massive deployment of Video Surveillance Systems (VSS). However, videos captured by such systems suffer characterized Low Resolution (LR), varying illumination and pose challeng... Read More about Resolution-aware Ensemble of Pose and Illumination-Invariant Feature Descriptors for Face Identification in Unconstrained Videos.