Research Repository

See what's under the surface


The Astropy Project: building an open-science project and status of the v2.0 core package (2018)
Journal Article
Price-Whelan, A., Sipőcz, B., Günther, H., Lim, P., Crawford, S., Conseil, S., …Bamford, S. (2018). The Astropy Project: building an open-science project and status of the v2.0 core package. Astronomical Journal, 156(3), doi:10.3847/1538-3881/aabc4f. ISSN 0004-6256

The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed functionality to the astronomical community. A key element of the The Astropy Project supports and fosters the d... Read More

Galaxy Zoo: constraining the origin of spiral arms (2018)
Journal Article
Hart, R. E., Bamford, S. P., Keel, W. C., Kruk, S. J., Masters, K. L., Simmons, B. D., & Smethurst, R. J. (2018). Galaxy Zoo: constraining the origin of spiral arms. Monthly Notices of the Royal Astronomical Society, 478(1), doi:10.1093/mnras/sty1201. ISSN 0035-8711

Since the discovery that the majority of low-redshift galaxies exhibit some level of spiral structure, a number of theories have been proposed as to why these patterns exist. A popular explanation is a process known as swing amplification, yet there... Read More

Galaxy Zoo: morphological classification of galaxy images from the Illustris simulation (2018)
Journal Article
Dickinson, H., Fortson, L., Lintott, C., Scarlata, C., Willett, K., Bamford, S., …Snyder, G. F. (2018). Galaxy Zoo: morphological classification of galaxy images from the Illustris simulation. Astrophysical Journal, 853(2), doi:10.3847/1538-4357/aaa250. ISSN 0004-637X

Modern large-scale cosmological simulations model the universe with increasing sophistication and at higher spatial and temporal resolutions. These ongoing enhancements permit increasingly detailed comparisons between the simulation outputs and real... Read More

Comparing experts and novices in Martian surface feature change detection and identification (2017)
Journal Article
Wardlaw, J., Sprinks, J., Houghton, R., Muller, J., Sidiropoulos, P., Bamford, S., & Marsh, S. (in press). Comparing experts and novices in Martian surface feature change detection and identification. International Journal of Applied Earth Observation and Geoinformation, doi:10.1016/j.jag.2017.05.014. ISSN 0303-2434

Change detection in satellite images is a key concern of the Earth Observation field for environmental and climate change monitoring. Satellite images also provide important clues to both the past and present surface conditions of other planets, whic... Read More

Galaxy Zoo: finding offset discs and bars in SDSS galaxies (2017)
Journal Article
Kruk, S. J., Lintott, C. J., Simmons, B. D., Bamford, S. P., Cardamone, C. N., Fortson, L., …Smethurst, R. J. (2017). Galaxy Zoo: finding offset discs and bars in SDSS galaxies. Monthly Notices of the Royal Astronomical Society, 469(3), doi:10.1093/mnras/stx1026. ISSN 0035-8711

We use multiwavelength Sloan Digital Sky Survey (SDSS) images and Galaxy Zoo morphologies to identify a sample of ∼270 late-type galaxies with an off-centre bar. We measure offsets in the range 0.2–2.5 kpc between the photometric centres of the stell... Read More

Galaxy Zoo: star formation versus spiral arm number (2017)
Journal Article
Hart, R. E., Bamford, S. P., Casteels, K. R., Kruk, S. J., Lintott, C. J., & Masters, K. L. (2017). Galaxy Zoo: star formation versus spiral arm number. Monthly Notices of the Royal Astronomical Society, 468(2), doi:10.1093/mnras/stx581. ISSN 0035-8711

Spiral arms are common features in low-redshift disc galaxies, and are prominent sites of star formation and dust obscuration. However, spiral structure can take many forms: from galaxies displaying two strong ‘grand design’ arms to those with many ‘... Read More

The SLUGGS survey: chromodynamical modelling of the lenticular galaxy NGC 1023 (2016)
Journal Article
Cortesi, A., Chies-Santos, A. L., Pota, V., Foster, C., Coccato, L., Mendes de Oliveira, C., …Almeida, A. (2016). The SLUGGS survey: chromodynamical modelling of the lenticular galaxy NGC 1023. Monthly Notices of the Royal Astronomical Society, 456(3), doi:10.1093/mnras/stv2753. ISSN 0035-8711

Globular clusters (GCs) can be considered discrete, long-lived, dynamical tracers that retain crucial information about the assembly history of their parent galaxy. In this paper, we present a new catalogue of GC velocities and colours for the lentic... Read More

Untangling galaxy components: full spectral bulge–disc decomposition (2016)
Journal Article
Tabor, M., Merrifield, M., Aragón-Salamanca, A., Cappellari, M., Bamford, S. P., & Johnston, E. (2017). Untangling galaxy components: full spectral bulge–disc decomposition. Monthly Notices of the Royal Astronomical Society, 466(2), doi:10.1093/mnras/stw3183. ISSN 0035-8711

To ascertain whether photometric decompositions of galaxies into bulges and discs are astrophysically meaningful, we have developed a new technique to decompose spectral data cubes into separate bulge and disc components, subject only to the constrai... Read More

SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI) (2016)
Journal Article
Johnston, E. J., Häußler, B., Aragón-Salamanca, A., Merrifield, M. R., Bamford, S., Bershady, M. A., …Yan, R. (2017). SDSS-IV MaNGA: bulge–disc decomposition of IFU data cubes (BUDDI). Monthly Notices of the Royal Astronomical Society, 465(2), doi:10.1093/mnras/stw2823. ISSN 0035-8711

With the availability of large integral field unit (IFU) spectral surveys of nearby galaxies, there is now the potential to extract spectral information from across the bulges and discs of galaxies in a systematic way. This information can address qu... Read More

Galaxy Zoo: quantitative visual morphological classifications for 48 000 galaxies from CANDELS (2016)
Journal Article
Simmons, B., Lintott, C., Willett, K. W., Masters, K. L., Kartaltepe, J. S., Häußler, B., …Wiklind, T. (2017). Galaxy Zoo: quantitative visual morphological classifications for 48 000 galaxies from CANDELS. Monthly Notices of the Royal Astronomical Society, 464(4), doi:10.1093/mnras/stw2587. ISSN 0035-8711

We present quantified visual morphologies of approximately 48 000 galaxies observed in three Hubble Space Telescope legacy fields by the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) and classified by participants in the Ga... Read More

Galaxy Zoo: morphological classifications for 120 000 galaxies in HST legacy imaging (2016)
Journal Article
Willett, K. W., Galloway, M. A., Bamford, S. P., Lintott, C. J., Masters, K. L., Scarlata, C., …Smith, A. M. (2017). Galaxy Zoo: morphological classifications for 120 000 galaxies in HST legacy imaging. Monthly Notices of the Royal Astronomical Society, 464(4), doi:10.1093/mnras/stw2568. ISSN 0035-8711

We present the data release paper for the Galaxy Zoo: Hubble (GZH) project. This is the third phase in a large effort to measure reliable, detailed morphologies of galaxies by using crowdsourced visual classifications of colour-composite images. Imag... Read More

Galaxy And Mass Assembly (GAMA): galaxy colour gradients versus colour, structure, and luminosity (2016)
Journal Article
Kennedy, R., Bamford, S. P., Häußler, B., Brough, S., Holwerda, B., Hopkins, A. M., …Vulcani, B. (2016). Galaxy And Mass Assembly (GAMA): galaxy colour gradients versus colour, structure, and luminosity. Astronomy and Astrophysics, 593, doi:10.1051/0004-6361/201628715. ISSN 0004-6361

Using single-component fits to SDSS/UKIDSS images of galaxies in the G09 region of the GAMA survey we study radial colour gradients across the galaxy population. We use the multi-wavelength information provided by MegaMorph analysis of galaxy light p... Read More