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Professor SIMON DYE's Outputs (87)

The impact of CLEANing on strong gravitational lens modelling (2025)
Journal Article
Maresca, J., & Dye, S. (2025). The impact of CLEANing on strong gravitational lens modelling. Monthly Notices of the Royal Astronomical Society, 537(3), 2708-2725. https://doi.org/10.1093/mnras/staf161

We present a comparison of image and uv-plane galaxy-galaxy strong lensing modelling results for simulated ALMA observations with different antenna configurations and on-source integration times. Image-plane modelling is carried out via use of the CL... Read More about The impact of CLEANing on strong gravitational lens modelling.

A kiloparsec-scale ordered magnetic field in a galaxy at z = 5.6 (2024)
Journal Article
Chen, J., Lopez-Rodriguez, E., Ivison, R. J., Geach, J. E., Dye, S., Liu, X., & Bendo, G. (2024). A kiloparsec-scale ordered magnetic field in a galaxy at z = 5.6. Astronomy and Astrophysics, 692, Article A34. https://doi.org/10.1051/0004-6361/202450969

Magnetic fields are widely observed in various astronomical contexts, yet much remains unknown about their significance across different systems and cosmic epochs. Our current knowledge of the evolution of magnetic fields is limited by scarce observa... Read More about A kiloparsec-scale ordered magnetic field in a galaxy at z = 5.6.

Metal factories in the early universe (2024)
Journal Article
Eales, S., Gomez, H., Dunne, L., Dye, S., & Smith, M. W. L. (2024). Metal factories in the early universe. Monthly Notices of the Royal Astronomical Society, 532(3), 2905–2919. https://doi.org/10.1093/mnras/stae1564

We have estimated the mass of metals in the molecular gas in 13 dusty star-forming galaxies at z ∼ 4 in which the gas, based on previous observations, lies in a cold rotating disk. We estimated the metal masses using either the submillimetre line or... Read More about Metal factories in the early universe.

A dusty protocluster surrounding the binary galaxy HerBS-70 at z = 2.3 (2024)
Journal Article
Bakx, T. J., Berta, S., Dannerbauer, H., Cox, P., Butler, K. M., Hagimoto, M., Hughes, D. H., Riechers, D. A., van der Werf, P. P., Yang, C., Baker, A. J., Beelen, A., Bendo, G. J., Borsato, E., Buat, V., Cooray, A. R., Dunne, L., Dye, S., Eales, S., Gavazzi, R., …Young, A. J. (2024). A dusty protocluster surrounding the binary galaxy HerBS-70 at z = 2.3. Monthly Notices of the Royal Astronomical Society, 530(4), 4578-4596. https://doi.org/10.1093/mnras/stae1155

We report on deep SCUBA-2 observations at 850 μm and NOrthern Extended Millimetre Array (NOEMA) spectroscopic measurements at 2 mm of the environment surrounding the luminous, massive (M∗ ≈ 2 × 1011 M☉) Herschel-selected source HerBS-70. This source... Read More about A dusty protocluster surrounding the binary galaxy HerBS-70 at z = 2.3.

Characterization of Herschel-selected strong lens candidates through HST and sub-mm/mm observations (2023)
Journal Article
Borsato, E., Marchetti, L., Negrello, M., Corsini, E. M., Wake, D., Amvrosiadis, A., Baker, A. J., Bakx, T. J. L. C., Beelen, A., Berta, S., Clements, D. L., Cooray, A., Cox, P., Dannerbauer, H., de Zotti, G., Dye, S., Eales, S. A., Enia, A., Farrah, D., Gonzalez-Nuevo, J., …Young, A. (2024). Characterization of Herschel-selected strong lens candidates through HST and sub-mm/mm observations. Monthly Notices of the Royal Astronomical Society, 528(4), 6222-6279. https://doi.org/10.1093/mnras/stad3381

We have carried out Hubble Space Telescope (HST) snapshot observations at 1.1 μm of 281 candidate strongly lensed galaxies identified in the wide-area extragalactic surveys conducted with the Herschel Space Observatory. Our candidates comprise system... Read More about Characterization of Herschel-selected strong lens candidates through HST and sub-mm/mm observations.

z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: III. Physical properties (2023)
Journal Article
Berta, S., Stanley, F., Ismail, D., Cox, P., Neri, R., Yang, C., Young, A. J., Jin, S., Dannerbauer, H., Bakx, T. J. L. C., Beelen, A., Weiß, A., Nanni, A., Omont, A., Van Der Werf, P., Krips, M., Baker, A. J., Bendo, G., Borsato, E., Buat, V., …Vlahakis, C. (2023). z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: III. Physical properties. Astronomy and Astrophysics, 678, Article A28. https://doi.org/10.1051/0004-6361/202346803

The z-GAL survey observed 137 bright Herschel-selected targets with the IRAM Northern Extended Millimeter Array, with the aim to measure their redshift and study their properties. Several of them have been resolved into multiple sources. Consequently... Read More about z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: III. Physical properties.

z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: I. Overview (2023)
Journal Article
Cox, P., Neri, R., Berta, S., Ismail, D., Stanley, F., Young, A., Jin, S., Bakx, T., Beelen, A., Dannerbauer, H., Krips, M., Lehnert, M., Omont, A., Riechers, D. A., Baker, A. J., Bendo, G., Borsato, E., Buat, V., Butler, K., Chartab, N., …Yang, C. (2023). z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: I. Overview. Astronomy and Astrophysics, 678, Article A26. https://doi.org/10.1051/0004-6361/202346801

Using the IRAM NOrthern Extended Millimetre Array (NOEMA), we conducted a Large Programme (z-GAL) to measure redshifts for 126 bright galaxies detected in the Herschel Astrophysical Large Area Survey (H-ATLAS), the HerMES Large Mode Survey (HeLMS), a... Read More about z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: I. Overview.

z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: II. Dust properties (2023)
Journal Article
Ismail, D., Beelen, A., Buat, V., Berta, S., Cox, P., Stanley, F., Young, A., Jin, S., Neri, R., Bakx, T., Dannerbauer, H., Butler, K., Cooray, A., Nanni, A., Omont, A., Serjeant, S., Van Der Werf, P., Vlahakis, C., Weiß, A., Yang, C., …Urquhart, S. (2023). z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: II. Dust properties. Astronomy and Astrophysics, 678, Article A27. https://doi.org/10.1051/0004-6361/202346804

We present the dust properties of 125 bright Herschel galaxies selected from the z-GAL NOEMA spectroscopic redshift survey. All the galaxies have precise spectroscopic redshifts in the range 1.3 < z < 5.4. The large instantaneous bandwidth of NOEMA p... Read More about z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: II. Dust properties.

Polarized thermal emission from dust in a galaxy at redshift 2.6 (2023)
Journal Article
Geach, J. E., Lopez-Rodriguez, E., Doherty, M. J., Chen, J., Ivison, R. J., Bendo, G. J., Dye, S., & Coppin, K. E. (2023). Polarized thermal emission from dust in a galaxy at redshift 2.6. Nature, 621(7979), 483-486. https://doi.org/10.1038/s41586-023-06346-4

Magnetic fields are fundamental to the evolution of galaxies, playing a key role in the astrophysics of the interstellar medium and star formation. Large-scale ordered magnetic fields have been mapped in the Milky Way and nearby galaxies1,2, but it i... Read More about Polarized thermal emission from dust in a galaxy at redshift 2.6.

The impact of human expert visual inspection on the discovery of strong gravitational lenses (2023)
Journal Article
Rojas, K., Collett, T. E., Ballard, D., Magee, M. R., Birrer, S., Buckley-Geer, E., Chan, J. H., Clément, B., Diego, J. M., Gentile, F., González, J., Joseph, R., Mastache, J., Schuldt, S., Tortora, C., Verdugo, T., Verma, A., Daylan, T., Millon, M., Jackson, N., …Levine, B. C. (2023). The impact of human expert visual inspection on the discovery of strong gravitational lenses. Monthly Notices of the Royal Astronomical Society, 523(3), 4413–4430. https://doi.org/10.1093/mnras/stad1680

We investigate the ability of human 'expert' classifiers to identify strong gravitational lens candidates in Dark Energy Survey like imaging. We recruited a total of 55 people that completed more than 25 per cent of the project. During the classifica... Read More about The impact of human expert visual inspection on the discovery of strong gravitational lenses.

Discovering strongly lensed quasar candidates with catalogue-based methods from DESI Legacy Surveys (2023)
Journal Article
He, Z., Li, N., Cao, X., Li, R., Zou, H., & Dye, S. (2023). Discovering strongly lensed quasar candidates with catalogue-based methods from DESI Legacy Surveys. Astronomy and Astrophysics, 672, Article A123. https://doi.org/10.1051/0004-6361/202245484

Context. The Hubble tension, revealed by a ~5σ discrepancy between measurements of the Hubble-Lemaitre constant among observations of the early and local Universe, is one of the most significant problems in modern cosmology. In order to better unders... Read More about Discovering strongly lensed quasar candidates with catalogue-based methods from DESI Legacy Surveys.

Bright extragalactic ALMA redshift survey (BEARS) III: detailed study of emission lines from 71 Herschel targets (2023)
Journal Article
Hagimoto, M., Bakx, T. J., Serjeant, S., Bendo, G. J., Urquhart, S. A., Eales, S., Harrington, K. C., Tamura, Y., Umehata, H., Berta, S., Cooray, A. R., Cox, P., De Zotti, G., Lehnert, M. D., Riechers, D. A., Scott, D., Temi, P., Van Der Werf, P. P., Yang, C., Amvrosiadis, A., …Young, A. J. (2023). Bright extragalactic ALMA redshift survey (BEARS) III: detailed study of emission lines from 71 Herschel targets. Monthly Notices of the Royal Astronomical Society, 521(4), 5508-5535. https://doi.org/10.1093/mnras/stad784

We analyse the molecular and atomic emission lines of 71 bright Herschel-selected galaxies between redshifts 1.4 and 4.6 detected by the Atacama Large Millimeter/submillimeter Array. These lines include a total of 156 CO, [C i], and H2O emission line... Read More about Bright extragalactic ALMA redshift survey (BEARS) III: detailed study of emission lines from 71 Herschel targets.

Resolved CO(1–0) Emission and Gas Properties in Luminous Dusty Star-forming Galaxies at z = 2–4 (2023)
Journal Article
Stanley, F., Jones, B. M., Riechers, D. A., Yang, C., Berta, S., Cox, P., Bakx, T. J., Cooray, A., Dannerbauer, H., Dye, S., Hughes, D. H., Ivison, R. J., Jin, S., Lehnert, M., Neri, R., Omont, A., van der Werf, P., & Weiss, A. (2023). Resolved CO(1–0) Emission and Gas Properties in Luminous Dusty Star-forming Galaxies at z = 2–4. Astrophysical Journal, 945(1), Article 24. https://doi.org/10.3847/1538-4357/acb6f7

We present the results of a survey of CO(1−0) emission in 14 infrared luminous dusty star-forming galaxies (DSFGs) at 2 < z < 4 with the NSF’s Karl G. Jansky Very Large Array. All sources are detected in 12CO(1−0), with an angular resolution of ∼1″.... Read More about Resolved CO(1–0) Emission and Gas Properties in Luminous Dusty Star-forming Galaxies at z = 2–4.

The bright extragalactic ALMA redshift survey (BEARS) – II. Millimetre photometry of gravitational lens candidates (2022)
Journal Article
Bendo, G. J., Urquhart, S. A., Serjeant, S., Bakx, T., Hagimoto, M., Cox, P., Neri, R., Lehnert, M. D., Dannerbauer, H., Amvrosiadis, A., Andreani, P., Baker, A. J., Beelen, A., Berta, S., Borsato, E., Buat, V., Butler, K. M., Cooray, A., De Zotti, G., Dunne, L., …Young, A. J. (2023). The bright extragalactic ALMA redshift survey (BEARS) – II. Millimetre photometry of gravitational lens candidates. Monthly Notices of the Royal Astronomical Society, 522(2), 2995-3017. https://doi.org/10.1093/mnras/stac3771

We present 101- and 151-GHz ALMA continuum images for 85 fields selected from Herschel observations that have 500-μm flux densities >80 mJy and 250–500-μm colours consistent with z > 2, most of which are expected to be gravitationally lensed or hyper... Read More about The bright extragalactic ALMA redshift survey (BEARS) – II. Millimetre photometry of gravitational lens candidates.

Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel (2022)
Journal Article
Maresca, J., Dye, S., Amvrosiadis, A., Bendo, G., Cooray, A., De Zotti, G., Dunne, L., Eales, S., Furlanetto, C., González-Nuevo, J., Greener, M., Ivison, R., Lapi, A., Negrello, M., Riechers, D., Serjeant, S., Tergolina, M., & Wardlow, J. (2022). Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel. Monthly Notices of the Royal Astronomical Society, 512(2), 2426–2438. https://doi.org/10.1093/mnras/stac585

We present modelling of ∼0.1 arcsec resolution Atacama Large Millimetre/submillimetre Array imaging of seven strong gravitationally lensed galaxies detected by the Herschel Space Observatory. Four of these systems are galaxy-galaxy strong lenses, wit... Read More about Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel.

The bright extragalactic ALMA redshift survey (BEARS) I: redshifts of bright gravitationally lensed galaxies from the Herschel ATLAS (2022)
Journal Article
Urquhart, S. A., Bendo, G. J., Serjeant, S., Bakx, T., Hagimoto, M., Cox, P., Neri, R., Lehnert, M., Sedgwick, C., Weiner, C., Dannerbauer, H., Amvrosiadis, A., Andreani, P., Baker, A. J., Beelen, A., Berta, S., Borsato, E., Buat, V., Butler, K. M., Cooray, A., …Young, A. J. (2022). The bright extragalactic ALMA redshift survey (BEARS) I: redshifts of bright gravitationally lensed galaxies from the Herschel ATLAS. Monthly Notices of the Royal Astronomical Society, 511(2), 3017–3033. https://doi.org/10.1093/mnras/stac150

We present spectroscopic measurements for 71 galaxies associated with 62 of the brightest high-redshift submillimetre sources from the Southern fields of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), while targeting 85 sources whi... Read More about The bright extragalactic ALMA redshift survey (BEARS) I: redshifts of bright gravitationally lensed galaxies from the Herschel ATLAS.

Ammonia in the interstellar medium of a starbursting disc at z = 2.6 (2022)
Journal Article
Doherty, M. J., Geach, J. E., Ivison, R. J., Menten, K. M., Jacob, A. M., Forbrich, J., & Dye, S. (2022). Ammonia in the interstellar medium of a starbursting disc at z = 2.6. Monthly Notices of the Royal Astronomical Society: Letters, 517(1), L60-L64. https://doi.org/10.1093/mnrasl/slac111

We report the detection of the ground state rotational emission of ammonia, ortho-NH3 (JK = 10 → 00) in a gravitationally lensed intrinsically hyperluminous star-bursting galaxy at z = 2.6. The integrated line profile is consistent with other molecul... Read More about Ammonia in the interstellar medium of a starbursting disc at z = 2.6.

A High-Resolution Investigation of the Multi-Phase ISM in a Galaxy during the First Two Billion Years (2021)
Journal Article
Dye, S., Eales, S. A., Gomez, H. L., Jones, G. C., Smith, M. W. L., Borsato, E., Moss, A., Dunne, L., Maresca, J., Amvrosiadis, A., Negrello, M., Marchetti, L., Corsini, E. M., Ivison, R. J., Bendo, G. J., Bakx, T., Cooray, A., Cox, P., Dannerbauer, H., Serjeant, S., …Vlahakis, C. (2022). A High-Resolution Investigation of the Multi-Phase ISM in a Galaxy during the First Two Billion Years. Monthly Notices of the Royal Astronomical Society, 510(3), 3734–3757. https://doi.org/10.1093/mnras/stab3569

We have carried out the first spatially-resolved investigation of the multi-phase interstellar medium (ISM) at high redshift, using the z = 4.24 strongly-lensed sub-millimetre galaxy H-ATLASJ142413.9+022303 (ID141). We present high-resolution (down t... Read More about A High-Resolution Investigation of the Multi-Phase ISM in a Galaxy during the First Two Billion Years.

Strong lens modelling: comparing and combining Bayesian neural networks and parametric profile fitting (2021)
Journal Article
Pearson, J., Maresca, J., Li, N., & Dye, S. (2021). Strong lens modelling: comparing and combining Bayesian neural networks and parametric profile fitting. Monthly Notices of the Royal Astronomical Society, 505(3), 4362-4382. https://doi.org/10.1093/mnras/stab1547

The vast quantity of strong galaxy–galaxy gravitational lenses expected by future large-scale surveys necessitates the development of automated methods to efficiently model their mass profiles. For this purpose, we train an approximate Bayesian convo... Read More about Strong lens modelling: comparing and combining Bayesian neural networks and parametric profile fitting.