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Publications

Book Chapters

  1. The interplay between dust and radiation
    A. J. Richings, 2024, in Astrochemical Modelling: Practical aspects of microphysics in numerical simulations, Edited by S. Bovino & T. Grassi, ISBN: 978-0-323-91746-9, Elsevier, p. 157-188

Refereed Journal Articles

  1. The morphologies of present-day galaxies in the COLIBRE simulations
    V. J. Forouhar Moreno, J. Schaye, M. Schaller, A. Ludlow, R. J. McGibbon, A. Benítez-Llambay, E. Chaikin, C. S. Frenk, F. Huško, S. Ploeckinger, A. J. Richings, J. W. Trayford, 2026, arXiv:2604.03503, submitted to MNRAS
  2. The tidal evolution of satellite galaxies in cosmological simulations: insights from COLIBRE
    F. He, J. Han, J. Schaye, W. Wang, Z. Li, S. Ploeckinger, E. Chaikin, R. J. McGibbon, F. Huško, M. Schaller, A. Benítez-Llambay, A. J. Richings, J. W. Trayford, C. S. Frenk, F. Jiang, 2026, arXiv:2604.03105, submitted to MNRAS
  3. The evolution of the sizes and angular momentum content of galaxies in the COLIBRE simulations
    A. D. Ludlow, K. L. Proctor, J. Schaye, F. Huško, V. J. Forouhar Moreno, D. Obreschkow, E. Chaikin, M. Schaller, S. Ploeckinger, A. Benítez-Llambay, K. A. Oman, R. J. McGibbon, J. W. Trayford, C. S. Frenk, A. J. Richings, 2026, arXiv:2603.26200, submitted to MNRAS
  4. Unveiling the properties and origin of massive quenched galaxies at z≥2 in the COLIBRE hydrodynamical simulations
    Á. Chandro-Gómez, C. d. P. Lagos, C. Power, W. M. Baker, A. Benítez-Llambay, E. Chaikin, H. G. Chittenden, C. Correa, C. S. Frenk, F. Huško, R. J. McGibbon, T. Nanayakkara, S. Ploeckinger, A. J. Richings, M. Schaller, J. Schaye, J. W. Trayford, 2025, arXiv:2512.16208, submitted to MNRAS
  5. Kennicutt-Schmidt relation of galaxies over 13 billion years in the COLIBRE hydrodynamical simulations
    C. d. P. Lagos, J. Schaye, M. Schaller, D. Obreschkow, Y. M. Bahé, A. Benítez-Llambay, E. Chaikin, C. Correa, T. A. Davis, C. S. Frenk, F. Huško, M. Kaasinen, R. J. McGibbon, K. Oman, S. Ploeckinger, A. J. Richings, J. W. Trayford, J. Wang, R. J. Wright, 2025, arXiv:2512.11309, submitted to MNRAS
  6. The role of galactic winds fueling central starbursts and quasars in the FIRE cosmological simulations
    J. Mercedes-Feliz, D. Anglés-Alcázar, B. K. Oh, R. K. Cochrane, S. Wellons, A. J. Richings, J. Moreno, C.-A. Faucher-Giguère, P. F. Hopkins, D. Kereš, 2025, arXiv:2510.19905, submitted to MNRAS
  7. The evolution of the galaxy stellar mass function and star formation rates in the COLIBRE simulations from redshift 17 to 0
    E. Chaikin, J. Schaye, M. Schaller, S. Ploeckinger, A. Benítez-Llambay, C. S. Frenk, F. Huško, R. McGibbon, A. J. Richings, J. W. Trayford, 2025, arXiv:2509.07960, accepted for publication in MNRAS
  8. A subgrid model for chemical enrichment in cosmological simulations
    C. A. Correa, J. Schaye, M. Schaller, J. W. Trayford, E. Chaikin, A. Benítez-Llambay, C. S. Frenk, S. Ploeckinger, A. J. Richings, 2026, arXiv:2604.00980, accepted for publication in MNRAS
  9. COLIBRE: calibrating subgrid feedback in cosmological simulations that include a cold gas phase
    E. Chaikin, J. Schaye, M. Schaller, S. Ploeckinger, Y. M. Bahé, A. Benítez-Llambay, C. Correa, V. J. Forouhar Moreno, C. S. Frenk, F. Huško, R. Kugel, R. McGibbon, A. J. Richings, J. W. Trayford, J. Borrow, R. A. Crain, J. C. Helly, C. G. Lacey, A. Ludlow, F. S. J. Nobels, 2026, MNRAS, 548, stag300
  10. The COLIBRE project: cosmological hydrodynamical simulations of galaxy formation and evolution
    J. Schaye, E. Chaikin, M. Schaller, S. Ploeckinger, F. Huško, R. McGibbon, J. W. Trayford, A. Benítez-Llambay, C. Correa, C. S. Frenk, A. J. Richings, V. J. Forouhar Moreno, Y. M. Bahé, J. Borrow, A. Durrant, A. Gebek, J. C. Helly, A. Jenkins, C. G. Lacey, A. Ludlow, F. S. J. Nobels, 2026, MNRAS, 548, stag375
  11. The HyLight model for hydrogen emission lines in simulated nebulae
    Y. Liu, T. Theuns, T. K. Chan, A. J. Richings, A. F. McLeod, 2026, MNRAS, 547, stag429
  12. Dynamical disequilibrium in dwarf galaxies: rethinking gas dynamics, rotation curves, and dark matter inference
    D. Dado, K. A. Oman, K. E. Harborne, F. Fragkoudi, J. Schaye, M. Schaller, A. Benítez-Llambay, E. Chaikin, C. S. Frenk, F. Huško, S. Ploeckinger, A. J. Richings, 2026, MNRAS, 547, stag356
  13. A hybrid active galactic nucleus feedback model with spinning black holes, winds and jets
    F. Huško, C. G. Lacey, J. Schaye, M. Schaller, E. Chaikin, S. Ploeckinger, A. Benítez-Llambay, A. J. Richings, J. W. Trayford, 2026, MNRAS, 547, stag324
  14. Non-explosive pre-supernova feedback in the COLIBRE model of galaxy formation
    A. Benítez-Llambay, S. Ploeckinger, J. Schaye, A. J. Richings, E. Chaikin, M. Schaller, J. W. Trayford, C. S. Frenk, F. Huško, C. Correa, 2026, MNRAS, 546, stag268
  15. Gravitational potential drives the concentration dependence of the stellar mass-halo mass relation
    K. Wang, J. Schaye, A. Benítez-Llambay, E. Chaikin, C. S. Frenk, F. Huško, R. J. McGibbon, S. Ploeckinger, A. J. Richings, M. Schaller, J. W. Trayford, 2026, MNRAS, 546, stag110
  16. SPARCS - combining radiation hydrodynamics with non-equilibrium metal chemistry in the SWIFT astrophysical code
    T. K. Chan, A. J. Richings, T. Theuns, Y. Liu, M. Schaller, M. Ivkovic, 2026, MNRAS, 546, stag004
  17. Modelling the evolution and influence of dust in cosmological simulations that include the cold phase of the interstellar medium
    J. W. Trayford, J. Schaye, C. Correa, S. Ploeckinger, A. J. Richings, E. Chaikin, M. Schaller, A. Benítez-Llambay, C. Frenk, F. Huško, 2026, MNRAS, 545, staf2040
  18. Emission line tracers of galactic outflows driven by stellar feedback in simulations of isolated disk galaxies
    E. L. Howatson, A. J. Richings, E. Roediger, C.-A. Faucher-Giguère, T. Theuns, Y. Liu, T. K. Chan, O. Thompson, C. Carr, D. Anglés-Alcázar, 2025, MNRAS, 543, 3428
  19. Hybrid-chimes: A model for radiative cooling and the abundances of ions and molecules in simulations of galaxy formation
    S. Ploeckinger, A. J. Richings, J. Schaye, J. W. Trayford, M. Schaller, E. Chaikin, 2025, MNRAS, 543, 891
  20. Hydrodynamic simulations of the Disc of Gas Around Supermassive black holes (HDGAS) -II; The transition from neutral atomic to molecular gas phases
    M. Raouf, S. Viti, R. Karimi, A. J. Richings, 2025, MNRAS, 539, 1516
  21. Tests of subgrid models for star formation using simulations of isolated disk galaxies
    F. S. J. Nobels, J. Schaye, M. Schaller, S. Ploeckinger, E. Chaikin, A. J. Richings, 2024, MNRAS, 532, 3299
  22. Predictions for CO emission and the CO-to-H2 conversion factor in galaxy simulations with non-equilibrium chemistry
    O. A. Thompson, A. J. Richings, B. K. Gibson, C.-A. Faucher-Giguère, R. Feldmann, C. C. Hayward, 2024, MNRAS, 532, 1948
  23. Dense stellar clump formation driven by strong quasar winds in the FIRE cosmological hydrodynamic simulations
    J. Mercedes-Feliz, D. Anglés-Alcázar, B. Kiat Oh, C. C. Hayward, R. K. Cochrane, A. J. Richings, C.-A. Faucher-Giguère, S. Wellons, B. A. Terrazas, J. Moreno, K. Y. Su, P. F. Hopkins, 2024, MNRAS, 530, 2795
  24. [CII] 158 μm emission as an indicator of galaxy star formation rate
    L. Liang, R. Feldmann, N. Murray, D. Narayanan, C. C. Hayward, D. Anglés-Alcázar, L. Bassini, A. J. Richings, C.-A. Faucher-Giguère, D. T. Chung, J. Y. H. Chan, O. Çatmabacak, D. Kereš, P. F. Hopkins, 2024, MNRAS, 528, 499
  25. Local positive feedback in the overall negative: the impact of quasar winds on star formation in the FIRE cosmological simulations
    J. Mercedes-Feliz, D. Anglés-Alcázar, C. C. Hayward, R. K. Cochrane, B. A. Terrazas, S. Wellons, A. J. Richings, C.-A. Faucher-Giguère, J. Moreno, K. Y. Su, P. F. Hopkins, E. Quataert, D. Kereš, 2023, MNRAS, 524, 3446
  26. Hydrodynamic simulations of the Disk of Gas Around Supermassive black holes (HDGAS) -I; Molecular Gas Dynamics
    M. Raouf, S. Viti, S. García-Burillo, A. J. Richings, J. Schaye, A. Bemis, F. S. J. Nobels, M. Guainazzi, K.-Y. Huang, M. Schaller, V. Impellizzeri, J. Holdship, 2023, MNRAS, 524, 786
  27. Rapid disc settling and the transition from bursty to steady star formation in Milky Way-mass galaxies
    A. B. Gurvich, J. Stern, C.-A. Faucher-Giguère, P. F. Hopkins, A. Wetzel, J. Moreno, C. C. Hayward, A. J. Richings, Z. Hafen, 2023, MNRAS, 519, 2598
  28. The effects of local stellar radiation and dust depletion on non-equilibrium interstellar chemistry
    A. J. Richings, C.-A. Faucher-Giguère, A. B. Gurvich, J. Schaye, C. C. Hayward, 2022, MNRAS, 517, 1557
  29. Unravelling the physics of multiphase AGN winds through emission line tracers
    A. J. Richings, C.-A. Faucher-Giguère, J. Stern, 2021, MNRAS, 503, 1568
  30. The changing circumgalactic medium over the last 10 Gyr I: Physical and dynamical properties
    E. Huscher, B. D. Oppenheimer, A. Lonardi, R. A. Crain, A. J. Richings, J. Schaye, 2021, MNRAS, 500, 1476
  31. Reproducing the CO-to-H2 conversion factor in cosmological simulations of Milky Way-mass galaxies
    L. C. Keating, A. J. Richings, N. Murray, C.-A. Faucher-Giguère, P. F. Hopkins, A. Wetzel, D. Kereš, S. Benincasa, R. Feldmann, S. Loebman, M. E. Orr, 2020, MNRAS, 499, 837
  32. Pressure balance in the multiphase ISM of cosmologically simulated disk galaxies
    A. Gurvich, C.-A. Faucher-Giguère, A. J. Richings, P. F. Hopkins, M. Y. Grudić, Z. Hafen, S. Wellons, J. Stern, E. Quataert, T. K. Chan, M. E. Orr, D. Kereš, A. Wetzel, C. C. Hayward, S. R. Loebman, N. Murray, 2020, MNRAS, 498, 3664
  33. The multiphase circumgalactic medium traced by low metal ions in EAGLE zoom simulations
    B. D. Oppenheimer, J. Schaye, R. A. Crain, J. K. Werk, A. J. Richings, 2018, MNRAS, 481, 835
  34. Radiative cooling of swept up gas in AGN-driven galactic winds and its implications for molecular outflows
    A. J. Richings, C.-A. Faucher-Giguère, 2018, MNRAS, 478, 3100
  35. Flickering AGN can explain the strong circumgalactic O VI observed by COS-Halos
    B. D. Oppenheimer, M. Segers, J. Schaye, A. J. Richings, R. A. Crain, 2018, MNRAS, 474, 4740
  36. The origin of fast molecular outflows in quasars: molecule formation in AGN-driven galactic winds
    A. J. Richings, C.-A. Faucher-Giguère, 2018, MNRAS, 474, 3673
  37. Metals in the circumgalactic medium are out of ionization equilibrium due to fluctuating active galactic nuclei
    M. C. Segers, B. D. Oppenheimer, J. Schaye, A. J. Richings, 2017, MNRAS, 471, 1026
  38. Chemical evolution of giant molecular clouds in simulations of galaxies
    A. J. Richings, J. Schaye, 2016, MNRAS, 460, 2297
  39. Bimodality of low-redshift circumgalactic O VI in non-equilibrium EAGLE zoom simulations
    B. D. Oppenheimer, R. A. Crain, J. Schaye, A. Rahmati, A. J. Richings, J. W. Trayford, J. Tumlinson, R. G. Bower, M. Schaller, T. Theuns, 2016, MNRAS, 460, 2157
  40. The effects of metallicity, UV radiation and non-equilibrium chemistry in high-resolution simulations of galaxies
    A. J. Richings, J. Schaye, 2016, MNRAS, 458, 270
  41. Non-equilibrium chemistry and cooling in the diffuse interstellar medium - II. Shielded Gas
    A. J. Richings, J. Schaye, B. D. Oppenheimer, 2014, MNRAS, 442, 2780
    Supplementary material can be found here.
  42. Non-equilibrium chemistry and cooling in the diffuse interstellar medium - I. Optically Thin Regime
    A. J. Richings, J. Schaye, B. D. Oppenheimer, 2014, MNRAS, 440, 3349
    Supplementary material can be found here.
  43. The connection between radio loudness and central surface brightness profiles in optically selected low-luminosity active galaxies
    A. J. Richings, P. Uttley & E. Kording, 2011, MNRAS, 415, 2158
  44. Field and Globular Cluster Low-mass X-ray Binaries in NGC 4278
    G. Fabbiano, N. J. Brassington, L. Lentati, L. Angelini, R. L. Davies, J. Gallagher, V. Kalogera, D.-W. Kim, A. R. King, A. Kundu, S. Pellegrini, A. J. Richings, G. Trinchieri, A. Zezas, S. Zepf, 2010, ApJ, 725, 1824
  45. The Hot Interstellar Medium of the Interacting Galaxy NGC 4490
    A. J. Richings, G. Fabbiano, Junfeng Wang & T. P. Roberts, 2010, ApJ, 723, 1375

Conference Proceedings

  1. Constraining the driving mechanism of galaxy-scale winds with emission line spectra
    J. Stern, J. Oñorbe, A. J. Richings, S. D. Johnson, C.-A. Faucher-Giguère, 2024, Black Hole Winds at All Scales, held 12-16 March, 2023 in Haifa, Israel. Edited by Gabriele Bruni, Maria Diaz Trigo, Sibasish Laha and Keigo Fukumura. Proceedings of the International Astronomical Union, Volume 378, pp. 45-49, doi:10.1017/S1743921323002831

Last modified: Thu Jul 4 14:55:45 BST 2024
Email: alexander.j.richings@durham.ac.uk