Outputs (22)

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.