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All Outputs (13)

SDSS-IV MaNGA: Stellar Population Gradients Within Barred Galaxies (2019)
Journal Article
Fraser-McKelvie, A., Merrifield, M., Aragón-Salamanca, A., Peterken, T., Masters, K., Krawczyk, C., …Drory, N. (2019). SDSS-IV MaNGA: Stellar Population Gradients Within Barred Galaxies. Monthly Notices of the Royal Astronomical Society: Letters, 488(1), L6–L11. https://doi.org/10.1093/mnrasl/slz085

Bars in galaxies are thought to stimulate both inflow of material and radial mixing along them. Observational evidence for this mixing has been inconclusive so far however, limiting the evaluation of the impact of bars on galaxy evolution. We now use... Read More about SDSS-IV MaNGA: Stellar Population Gradients Within Barred Galaxies.

SDSS IV MaNGA: full spectroscopic bulge-disc decomposition of MaNGA early-type galaxies (2019)
Journal Article
Tabor, M., Merrifield, M., Aragón-Salamanca, A., Fraser-Mckelvie, A., Peterken, T., Smethurst, R., …Lane, R. R. (2019). SDSS IV MaNGA: full spectroscopic bulge-disc decomposition of MaNGA early-type galaxies. Monthly Notices of the Royal Astronomical Society, 485(2), 1546–1558. https://doi.org/10.1093/mnras/stz431

By applying spectroscopic decomposition methods to a sample of MaNGA early-type galaxies, we separate out spatially and kinematically distinct stellar populations, allowing us to explore the similarities and differences between galaxy bulges and disc... Read More about SDSS IV MaNGA: full spectroscopic bulge-disc decomposition of MaNGA early-type galaxies.

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), 932-949. https://doi.org/10.1093/mnras/sty1201

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 about Galaxy Zoo: constraining the origin of spiral arms.

The fourteenth data release of the Sloan Digital Sky Survey: first spectroscopic data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment (2018)
Journal Article
Abolfathi, B., Aguado, D., Aguilar, G., Allende Prieto, C., Almeida, A., Ananna, T. T., …Smethurst, R. J. (in press). The fourteenth data release of the Sloan Digital Sky Survey: first spectroscopic data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment. Astrophysical Journal Supplement, 235(2), https://doi.org/10.3847/1538-4365/aa9e8a

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourteenth from SDSS overall (making this, Data Release Fourteen or DR14). Th... Read More about The fourteenth data release of the Sloan Digital Sky Survey: first spectroscopic data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment.

SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA (2017)
Journal Article
Lin, L., Belfiore, F., Pan, H., Bothwell, M. S., Hsieh, P., Huang, S., …Thomas, D. (2017). SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA. Astrophysical Journal, 851(1), 1-9. https://doi.org/10.3847/1538-4357/aa96ae

We study the role of cold gas in quenching star formation in the green valley by analyzing ALMA 12CO (1–0) observations of three galaxies with resolved optical spectroscopy from the MaNGA survey. We present resolution-matched maps of the star formati... Read More about SDSS-IV MaNGA-resolved star formation and molecular gas properties of green valley galaxies: a first look with ALMA and MaNGA.

Galaxy Zoo: secular evolution of barred galaxies from structural decomposition of multiband images (2017)
Journal Article
Kruk, S. J., Lintott, C. J., Bamford, S. P., Masters, K. L., Simmons, B. D., Häußler, B., …Kelvin, L. (2018). Galaxy Zoo: secular evolution of barred galaxies from structural decomposition of multiband images. Monthly Notices of the Royal Astronomical Society, 473(4), https://doi.org/10.1093/mnras/stx2605

We present the results of two-component (disc+bar) and three-component (disc+bar+bulge) multiwavelength 2D photometric decompositions of barred galaxies in five Sloan Digital Sky Survey (SDSS) bands (ugriz). This sample of ?3500 nearby (z

SDSS-IV MaNGA: the different quenching histories of fast and slow rotators (2017)
Journal Article
Smethurst, R. J., Masters, K. L., Lintott, C. J., Weijmans, A., Merrifield, M. R., Penny, S. J., …Nichol, R. C. (2018). SDSS-IV MaNGA: the different quenching histories of fast and slow rotators. Monthly Notices of the Royal Astronomical Society, 473(2), 2679-2687. https://doi.org/10.1093/mnras/stx2547

Do the theorised different formation mechanisms of fast and slow rotators produce an observable difference in their star formation histories? To study this we identify quenching slow rotators in the MaNGA sample by selecting those which lie below the... Read More about SDSS-IV MaNGA: the different quenching histories of fast and slow rotators.

Galaxy Zoo and SPARCFIRE: constraints on spiral arm formation mechanisms from spiral arm number and pitch angles (2017)
Journal Article
Hart, R. E., Bamford, S. P., Hayes, W. B., Cardamone, C. N., Keel, W. C., Kruk, S. J., …Smethurst, R. J. (2017). Galaxy Zoo and SPARCFIRE: constraints on spiral arm formation mechanisms from spiral arm number and pitch angles. Monthly Notices of the Royal Astronomical Society, 472(2), 2263-2279. https://doi.org/10.1093/mnras/stx2137

In this paper, we study the morphological properties of spiral galaxies, including measurements of spiral arm number and pitch angle. Using Galaxy Zoo 2, a stellar mass-complete sample of 6222 SDSS spiral galaxies is selected. We use the machine visi... Read More about Galaxy Zoo and SPARCFIRE: constraints on spiral arm formation mechanisms from spiral arm number and pitch angles.

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), 3363-3373. https://doi.org/10.1093/mnras/stx1026

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 about Galaxy Zoo: finding offset discs and bars in SDSS galaxies.

Galaxy Zoo: the interplay of quenching mechanisms in the group environment (2017)
Journal Article
Smethurst, R. J., Lintott, C., Bamford, S., Hart, R., Kruk, S., Masters, K., …Simmons, B. (2017). Galaxy Zoo: the interplay of quenching mechanisms in the group environment. Monthly Notices of the Royal Astronomical Society, 469(3), 3670-3687. https://doi.org/10.1093/mnras/stx973

Does the environment of a galaxy directly influence the quenching history of a galaxy? Here, we investigate the detailed morphological structures and star formation histories of a sample of SDSS group galaxies with both classifications from Galaxy Zo... Read More about Galaxy Zoo: the interplay of quenching mechanisms in the group environment.

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), https://doi.org/10.1093/mnras/stw2587

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 about Galaxy Zoo: quantitative visual morphological classifications for 48 000 galaxies from CANDELS.

Galaxy Zoo: evidence for rapid, recent quenching within a population of AGN host galaxies (2016)
Journal Article
Smethurst, R. J., Lintott, C., Simmons, B., Schawinski, K., Bamford, S., Cardamone, C., …Wong, O. (2016). Galaxy Zoo: evidence for rapid, recent quenching within a population of AGN host galaxies. Monthly Notices of the Royal Astronomical Society, 463(3), https://doi.org/10.1093/mnras/stw2204

We present a population study of the star formation history of 1244 Type 2 active galactic nuclei (AGN) host galaxies, compared to 6107 inactive galaxies. A Bayesian method is used to determine individual galaxy star formation histories, which are th... Read More about Galaxy Zoo: evidence for rapid, recent quenching within a population of AGN host galaxies.

Galaxy Zoo: comparing the demographics of spiral arm number and a new method for correcting redshift bias (2016)
Journal Article
Hart, R. E., Bamford, S. P., Willett, K. W., Masters, K. L., Cardamone, C., Lintott, C. J., …Smethurst, R. J. (2016). Galaxy Zoo: comparing the demographics of spiral arm number and a new method for correcting redshift bias. Monthly Notices of the Royal Astronomical Society, 461(4), https://doi.org/10.1093/mnras/stw1588

The majority of galaxies in the local Universe exhibit spiral structure with a variety of forms. Many galaxies possess two prominent spiral arms, some have more, while others display a many-armed flocculent appearance. Spiral arms are associated with... Read More about Galaxy Zoo: comparing the demographics of spiral arm number and a new method for correcting redshift bias.