Professor Alis Deason

Professor (Research) - RS URF

+44 (0) 191 33 43283
alis.j.deason@durham.ac.uk
ORCID profile

Affiliations
Affiliation	Telephone
Professor (Research) - RS URF in the Department of Physics	+44 (0) 191 33 43283
Professor in the Institute for Computational Cosmology	+44 (0) 191 33 43283

Research interests

Galactic Astronomy
Local Group Galaxies
Near Field Cosmology

Publications

Journal Article

Deason, A. J., & Belokurov, V. (2024). Galactic Archaeology with Gaia. New Astronomy Reviews, 99, Article 101706. https://doi.org/10.1016/j.newar.2024.101706
Conroy, C., Johnson, B. D., van Dokkum, P., Deason, A., Tacchella, S., Belli, S., Bowman, W. P., Naidu, R. P., Park, M., Abraham, R., & Emami, R. (2024). Detection of Accretion Shelves Out to the Virial Radius of a Low-mass Galaxy with JWST. The Astrophysical Journal, 968(2), Article 129. https://doi.org/10.3847/1538-4357/ad414a
Jin, S., Trager, S. C., Dalton, G. B., Aguerri, J. A. L., Drew, J. E., Falcón-Barroso, J., Gänsicke, B. T., Hill, V., Iovino, A., Pieri, M. M., Poggianti, B. M., Smith, D. J. B., Vallenari, A., Abrams, D. C., Aguado, D. S., Antoja, T., Aragón-Salamanca, A., Ascasibar, Y., Babusiaux, C., Balcells, M., …Zurita, C. (2024). The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation. Monthly Notices of the Royal Astronomical Society, 530(3), 2688-2730. https://doi.org/10.1093/mnras/stad557
Carrillo, A., Deason, A. J., Fattahi, A., Callingham, T. M., & Grand, R. J. J. (2024). Can we really pick and choose? Benchmarking various selections of Gaia Enceladus/Sausage stars in observations with simulations. Monthly Notices of the Royal Astronomical Society, 527(2), 2165–2184. https://doi.org/10.1093/mnras/stad3274
Horta, D., Cunningham, E. C., Sanderson, R., Johnston, K. V., Deason, A., Wetzel, A., McCluskey, F., Garavito-Camargo, N., Necib, L., Faucher-Giguère, C.-A., Arora, A., & Gandhi, P. J. (2023). The proto-galaxy of Milky Way-mass haloes in the FIRE simulations. Monthly Notices of the Royal Astronomical Society, 527(4), 9810-9825. https://doi.org/10.1093/mnras/stad3834
Savino, A., Weisz, D. R., Skillman, E. D., Dolphin, A., Cole, A. A., Kallivayalil, N., Wetzel, A., Anderson, J., Besla, G., Boylan-Kolchin, M., Brown, T. M., Bullock, J. S., Collins, M. L. M., Cooper, M. C., Deason, A. J., Dotter, A. L., Fardal, M., Ferguson, A. M. N., Fritz, T. K., Geha, M. C., …van der Marel, R. P. (2023). The Hubble Space Telescope Survey of M31 Satellite Galaxies. II. The Star Formation Histories of Ultrafaint Dwarf Galaxies. Astrophysical Journal, 956(2), Article 86. https://doi.org/10.3847/1538-4357/acf46f
Navarrete, C., Aguado, D. S., Belokurov, V., Erkal, D., Deason, A., Cullinane, L., & Carballo-Bello, J. (2023). The 3D kinematics of stellar substructures in the periphery of the Large Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 523(3), 4720-4738. https://doi.org/10.1093/mnras/stad1698
Bose, S., & Deason, A. J. (2023). The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways. Monthly Notices of the Royal Astronomical Society, 522(4), 5013-5021. https://doi.org/10.1093/mnras/stad1123
McKinnon, K. A., Cunningham, E. C., Rockosi, C. M., Guhathakurta, P., Escala, I., Kirby, E. N., & Deason, A. J. (2023). HALO7D. III. Chemical Abundances of Milky Way Halo Stars from Medium-resolution Spectra. Astrophysical Journal, 951(1), Article 43. https://doi.org/10.3847/1538-4357/acd33d
Reina-Campos, M., Trujillo-Gomez, S., Pfeffer, J. L., Sills, A., Deason, A. J., Crain, R. A., & Diederik Kruijssen, J. M. (2023). Constraining the shape of dark matter haloes with globular clusters and diffuse stellar light in the E-MOSAICS simulations. Monthly Notices of the Royal Astronomical Society, 521(4), 6368–6382. https://doi.org/10.1093/mnras/stad920
Cooper, A. P., Koposov, S. E., Allende Prieto, C., Manser, C. J., Kizhuprakkat, N., Myers, A. D., Dey, A., Gänsicke, B. T., Li, T. S., Rockosi, C., Valluri, M., Najita, J., Deason, A., Raichoor, A., Wang, M.-Y., Ting, Y.-S., Kim, B., Carrillo, A., Wang, W., Beraldo e Silva, L., …Zou, H. (2023). Overview of the DESI Milky Way Survey. Astrophysical Journal, 947(1), Article 37. https://doi.org/10.3847/1538-4357/acb3c0
Genina, A., Deason, A., & Frenk, C. (2023). On the edge: the relation between stellar and dark matter haloes of Milky Way-mass galaxies. Monthly Notices of the Royal Astronomical Society, 520(3), 3767-3787. https://doi.org/10.1093/mnras/stad397
Belokurov, V., Vasiliev, E., Deason, A. J., Koposov, S. E., Fattahi, A., Dillamore, A. M., Davies, E. Y., & Grand, R. J. (2023). Energy wrinkles and phase-space folds of the last major merger. Monthly Notices of the Royal Astronomical Society, 518(4), 6200-6215. https://doi.org/10.1093/mnras/stac3436
Deason, A. J., Koposov, S. E., Fattahi, A., & Grand, R. J. (2023). Unravelling the mass spectrum of destroyed dwarf galaxies with the metallicity distribution function. Monthly Notices of the Royal Astronomical Society, 520(4), 6091-6103. https://doi.org/10.1093/mnras/stad535
Evans, T. A., Fattahi, A., Deason, A. J., & Frenk, C. S. (2022). Observing EAGLE galaxies with JWST: predictions for Milky Way progenitors and their building blocks. Monthly Notices of the Royal Astronomical Society, 516(3), 3861-3877. https://doi.org/10.1093/mnras/stac2410
Savino, A., Weisz, D. R., Skillman, E. D., Dolphin, A., Kallivayalil, N., Wetzel, A., Anderson, J., Besla, G., Boylan-Kolchin, M., Bullock, J. S., Cole, A. A., Collins, M. L. M., Cooper, M. C., Deason, A. J., Dotter, A. L., Fardal, M., Ferguson, A. M. N., Fritz, T. K., Geha, M. C., Gilbert, K. M., …van der Marel, R. P. (2022). The Hubble Space Telescope Survey of M31 Satellite Galaxies. I. RR Lyrae–based Distances and Refined 3D Geometric Structure. Astrophysical Journal, 938(2), Article 101. https://doi.org/10.3847/1538-4357/ac91cb
Kelly, A. J., Jenkins, A., Deason, A., Fattahi, A., Grand, R. J., Pakmor, R., Springel, V., & Frenk, C. S. (2022). Apostle-Auriga: effects of different subgrid models on the baryon cycle around Milky Way-mass galaxies. Monthly Notices of the Royal Astronomical Society, 514(3), 3113-3138. https://doi.org/10.1093/mnras/stac1019
Reina-Campos, M., Trujillo-Gomez, S., Deason, A. J., Kruijssen, J. D., Pfeffer, J. L., Crain, R. A., Bastian, N., & Hughes, M. E. (2022). Radial distributions of globular clusters trace their host dark matter halo: insights from the E-MOSAICS simulations. Monthly Notices of the Royal Astronomical Society, 513(3), 3925-3945. https://doi.org/10.1093/mnras/stac1126
Richstein, H., Patel, E., Kallivayalil, N., Simon, J. D., Zivick, P., Tollerud, E., Fritz, T., Warfield, J. T., Besla, G., van der Marel, R. P., Wetzel, A., Choi, Y., Deason, A., Geha, M., Guhathakurta, P., Jeon, M., Kirby, E. N., Libralato, M., Sacchi, E., & Sohn, S. T. (2022). Structural Parameters and Possible Association of the Ultra-faint Dwarfs Pegasus III and Pisces II from Deep Hubble Space Telescope Photometry. Astrophysical Journal, 933(2), Article 217. https://doi.org/10.3847/1538-4357/ac7226
Callingham, T. M., Cautun, M., Deason, A. J., Frenk, C. S., Grand, R. J., & Marinacci, F. (2022). The chemo-dynamical groups of Galactic globular clusters. Monthly Notices of the Royal Astronomical Society, 513(3), 4107-4129. https://doi.org/10.1093/mnras/stac1145
Deason, A. J., Bose, S., Fattahi, A., Amorisco, N. C., Hellwing, W., & Frenk, C. S. (2022). Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter. Monthly Notices of the Royal Astronomical Society, 511(3), 4044-4059. https://doi.org/10.1093/mnras/stab3524
Tacchella, S., Conroy, C., Faber, S., Johnson, B. D., Leja, J., Barro, G., Cunningham, E. C., Deason, A. J., Guhathakurta, P., Guo, Y., Hernquist, L., Koo, D. C., McKinnon, K., Rockosi, C. M., Speagle, J. S., van Dokkum, P., & Yesuf, H. M. (2022). Fast, Slow, Early, Late: Quenching Massive Galaxies at z ∼ 0.8. Astrophysical Journal, 926(2), Article 134. https://doi.org/10.3847/1538-4357/ac449b
Sacchi, E., Richstein, H., Kallivayalil, N., van der Marel, R., Libralato, M., Zivick, P., Besla, G., Brown, T. M., Choi, Y., Deason, A., Fritz, T., Geha, M., Guhathakurta, P., Jeon, M., Kirby, E., Majewski, S. R., Patel, E., Simon, J. D., Tony Sohn, S., Tollerud, E., & Wetzel, A. (2021). Star Formation Histories of Ultra-faint Dwarf Galaxies: Environmental Differences between Magellanic and Non-Magellanic Satellites?*. Astrophysical Journal Letters, 920(1), Article L19. https://doi.org/10.3847/2041-8213/ac2aa3
Gonzalez, A. H., George, T., Connor, T., Deason, A., Donahue, M., Montes, M., Zabludoff, A. I., & Zaritsky, D. (2021). Discovery of a possible splashback feature in the intracluster light of MACS J1149.5+2223. Monthly Notices of the Royal Astronomical Society, 507(1), 963-970. https://doi.org/10.1093/mnras/stab2117
Shao, S., Cautun, M., Frenk, C. S., Reina-Campos, M., Deason, A. J., Crain, R. A., Kruijssen, J. D., & Pfeffer, J. (2021). The survival of globular clusters in a cuspy Fornax. Monthly Notices of the Royal Astronomical Society, 507(2), 2339-2353. https://doi.org/10.1093/mnras/stab2285
Erkal, D., Deason, A. J., Belokurov, V., Xue, X.-X., Koposov, S. E., Bird, S. A., Liu, C., Simion, I. T., Yang, C., Zhang, L., & Zhao, G. (2021). Detection of the LMC-induced sloshing of the Galactic halo. Monthly Notices of the Royal Astronomical Society, 506(2), 2677-2684. https://doi.org/10.1093/mnras/stab1828
Shao, S., Cautun, M., Deason, A., & Frenk, C. S. (2021). The twisted dark matter halo of the Milky Way. Monthly Notices of the Royal Astronomical Society, 504(4), 6033-6048. https://doi.org/10.1093/mnras/staa3883
Deason, A. J., Erkal, D., Belokurov, V., Fattahi, A., Gómez, F. A., Grand, R. J., Pakmor, R., Xue, X.-X., Liu, C., Yang, C., Zhang, L., & Zhao, G. (2021). The mass of the Milky Way out to 100 kpc using halo stars. Monthly Notices of the Royal Astronomical Society, 501(4), 5964-5972. https://doi.org/10.1093/mnras/staa3984
Horne, K., Rosa, G. D., Peterson, B., Barth, A., Ely, J., Fausnaugh, M., Kriss, G., Pei, L., Bentz, M., Cackett, E., Edelson, R., Eracleous, M., Goad, M., Grier, C., Kaastra, J., Kochanek, C., Krongold, Y., Mathur, S., Netzer, H., Proga, D., …Zu, Y. (2021). Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548. Astrophysical Journal, 907(2), Article 76. https://doi.org/10.3847/1538-4357/abce60
Deason, A. J., Oman, K. A., Fattahi, A., Schaller, M., Jauzac, M., Zhang, Y., Montes, M., Bahé, Y. M., Dalla Vecchia, C., Kay, S. T., & Evans, T. A. (2021). Stellar splashback: the edge of the intracluster light. Monthly Notices of the Royal Astronomical Society, 500(3), 4181-4192. https://doi.org/10.1093/mnras/staa3590
Fattahi, A., Deason, A. J., Frenk, C. S., Simpson, C. M., Gómez, F. A., Grand, R. J., Monachesi, A., Marinacci, F., & Pakmor, R. (2020). A tale of two populations: surviving and destroyed dwarf galaxies and the build-up of the Milky Way’s stellar halo. Monthly Notices of the Royal Astronomical Society, 497(4), 4459-4471. https://doi.org/10.1093/mnras/staa2221
Evans, T. A., Fattahi, A., Deason, A. J., & Frenk, C. S. (2020). How Unusual is the Milky Way’s Assembly History?. Monthly Notices of the Royal Astronomical Society, 497(4), 4311-4321. https://doi.org/10.1093/mnras/staa2202
Williams, P., Pancoast, A., Treu, T., Brewer, B., Peterson, B., Barth, A., Malkan, M., Rosa, G. D., Horne, K., Kriss, G., Arav, N., Bentz, M., Cackett, E., Bontà, E. D., Dehghanian, M., Done, C., Ferland, G., Grier, C., Kaastra, J., Kara, E., …Zu, Y. (2020). Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548. Astrophysical Journal, 902(1), Article 74. https://doi.org/10.3847/1538-4357/abbad7
Pakmor, R., Marinacci, F., Gómez, F. A., Fragkoudi, F., Fattahi, A., Deason, A. J., Belokurov, V., Kawata, D., & Grand, R. J. (2020). The dual origin of the Galactic thick disc and halo from the gas-rich Gaia-Enceladus-Sausage merger. Monthly Notices of the Royal Astronomical Society, 497(2), 1603-1618. https://doi.org/10.1093/mnras/staa2057
Deason, A. J., Fattahi, A., Frenk, C. S., Grand, R. J., Oman, K. A., Garrison-Kimmel, S., Simpson, C. M., & Navarro, J. F. (2020). The Edge of the Galaxy. Monthly Notices of the Royal Astronomical Society, 496(3), 3929-3942. https://doi.org/10.1093/mnras/staa1711
Cunningham, E. C., Garavito-Camargo, N., Deason, A. J., Johnston, K. V., Erkal, D., Laporte, C. F., Besla, G., Luger, R., & Sanderson, R. E. (2020). Quantifying the Stellar Halo's Response to the LMC's Infall with Spherical Harmonics. Astrophysical Journal, 898(1), Article 4. https://doi.org/10.3847/1538-4357/ab9b88
Frenk, C. S., Belokurov, V., Deason, A. J., & Bose, S. (2020). The little things matter: relating the abundance of ultrafaint satellites to the hosts’ assembly history. Monthly Notices of the Royal Astronomical Society, 495(1), 743-757. https://doi.org/10.1093/mnras/staa1199
Pakmor, R., Marinacci, F., Grand, R. J., Frenk, C. S., Deason, A. J., Cautun, M., & Callingham, T. M. (2020). The orbital phase space of contracted dark matter haloes. Monthly Notices of the Royal Astronomical Society, 495(1), 12-28. https://doi.org/10.1093/mnras/staa1089
Cautun, M., Benítez-Llambay, A., Deason, A. J., Frenk, C. S., Fattahi, A., Gómez, F. A., Grand, R. J., Oman, K. A., Navarro, J. F., & Simpson, C. M. (2020). The Milky Way total mass profile as inferred from Gaia DR2. Monthly Notices of the Royal Astronomical Society, 494(3), 4291-4313. https://doi.org/10.1093/mnras/staa1017
Grand, R. J., Evans, N. W., Deason, A. J., Smith, M. C., Fattahi, A., Sanders, J. L., & Belokurov, V. (2020). The biggest Splash. Monthly Notices of the Royal Astronomical Society, 494(3), 3880-3898. https://doi.org/10.1093/mnras/staa876
Deason, A. J., Belokurov, V., & Sanders, J. L. (2019). The total stellar halo mass of the Milky Way. Monthly Notices of the Royal Astronomical Society, 490(3), 3426-3439. https://doi.org/10.1093/mnras/stz2793
Werk, J. K., Rubin, K., Bish, H., Prochaska, J., Zheng, Y., O’Meara, J., Lenz, D., Hummels, C., & Deason, A. (2019). The Nature of Ionized Gas in the Milky Way Galactic Fountain. Astrophysical Journal, 887(1), Article 89. https://doi.org/10.3847/1538-4357/ab54cf
Simpson, C. M., Gargiulo, I., Gómez, F. A., Grand, R. J., Maffione, N., Cooper, A. P., Deason, A. J., Frenk, C., Helly, J., Marinacci, F., & Pakmor, R. (2019). Simulating cosmological substructure in the solar neighbourhood. Monthly Notices of the Royal Astronomical Society: Letters, 490(1), L32-L37. https://doi.org/10.1093/mnrasl/slz142
Belokurov, V., Deason, A. J., Erkal, D., Koposov, S. E., Carballo-Bello, J. A., Smith, M. C., Jethwa, P., & Navarrete, C. (2019). The Pisces Plume and the Magellanic wake. Monthly Notices of the Royal Astronomical Society: Letters, 488(1), L47-L52. https://doi.org/10.1093/mnrasl/slz101
Bish, H. V., Werk, J. K., Prochaska, J. X., Rubin, K. H., Zheng, Y., O’Meara, J. M., & Deason, A. J. (2019). Galactic Gas Flows from Halo to Disk: Tomography and Kinematics at the Milky Way’s Disk–Halo Interface. Astrophysical Journal, 882(2), Article 76. https://doi.org/10.3847/1538-4357/ab3414
Kriss, G., De Rosa, G., Ely, J., Peterson, B., Kaastra, J., Mehdipour, M., Ferland, G., Dehghanian, M., Mathur, S., Edelson, R., Korista, K., Arav, N., Barth, A., Bentz, M., Brandt, W., Crenshaw, D., Bontà, E. D., Denney, K., Done, C., Eracleous, M., …Zu, Y. (2019). Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum. Astrophysical Journal, 881(2), https://doi.org/10.3847/1538-4357/ab3049
Grand, R. J., Deason, A. J., White, S. D., Simpson, C. M., Gómez, F. A., Marinacci, F., & Pakmor, R. (2019). The effects of dynamical substructure on Milky Way mass estimates from the high-velocity tail of the local stellar halo. Monthly Notices of the Royal Astronomical Society: Letters, 487(1), L72-L76. https://doi.org/10.1093/mnrasl/slz092
Cunningham, E. C., Deason, A. J., Sanderson, R. E., Sohn, S. T., Anderson, J., Guhathakurta, P., Rockosi, C. M., van der Marel, R. P., Loebman, S. R., & Wetzel, A. (2019). HALO7D II: The Halo Velocity Ellipsoid and Velocity Anisotropy with Distant Main-sequence Stars. Astrophysical Journal, 879(2), Article 120. https://doi.org/10.3847/1538-4357/ab24cd
Lancaster, L., Koposov, S. E., Belokurov, V., Evans, N. W., & Deason, A. J. (2019). The Halo’s Ancient Metal-Rich Progenitor Revealed with BHB Stars. Monthly Notices of the Royal Astronomical Society, 486(1), 378-389. https://doi.org/10.1093/mnras/stz853
Cunningham, E. C., Deason, A. J., Rockosi, C. M., Guhathakurta, P., Jennings, Z. G., Kirby, E. N., Toloba, E., & Barro, G. (2019). HALO7D I. The Line-of-sight Velocities of Distant Main-sequence Stars in the Milky Way Halo. Astrophysical Journal, 876(2), Article 124. https://doi.org/10.3847/1538-4357/ab16cb
Deason, A. J., Fattahi, A., Belokurov, V., Evans, N. W., Grand, R. J., Marinacci, F., & Pakmor, R. (2019). The local high-velocity tail and the Galactic escape speed. Monthly Notices of the Royal Astronomical Society, 485(3), 3514-3526. https://doi.org/10.1093/mnras/stz623
Callingham, T. M., Cautun, M., Deason, A. J., Frenk, C. S., Wang, W., Gómez, F. A., Grand, R. J., Marinacci, F., & Pakmor, R. (2019). The mass of the Milky Way from satellite dynamics. Monthly Notices of the Royal Astronomical Society, 484(4), 5453-5467. https://doi.org/10.1093/mnras/stz365
Fattahi, A., Belokurov, V., Deason, A. J., Frenk, C. S., Gómez, F. A., Grand, R. J., Marinacci, F., Pakmor, R., & Springel, V. (2019). The origin of galactic metal-rich stellar halo components with highly eccentric orbits. Monthly Notices of the Royal Astronomical Society, 484(4), 4471-4483. https://doi.org/10.1093/mnras/stz159
Grand, R., Helly, J., Fattahi, A., Cautun, M., Cole, S., Cooper, A., Deason, A., Frenk, C., Gómez, F., Hunt, J., Marinacci, F., Pakmor, R., Simpson, C., Springel, V., & Xu, D. (2018). Aurigaia: mock Gaia DR2 stellar catalogues from the Auriga cosmological simulations. Monthly Notices of the Royal Astronomical Society, 481(2), 1726-1743. https://doi.org/10.1093/mnras/sty2403
Cautun, M., Deason, A. J., Frenk, C. S., & McAlpine, S. (2018). The aftermath of the Great Collision between our Galaxy and the Large Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 483(2), 2185-2196. https://doi.org/10.1093/mnras/sty3084
Shao, S., Cautun, M., Deason, A., Frenk, C., & Theuns, T. (2018). Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 479(1), 284-296. https://doi.org/10.1093/mnras/sty1470
Bose, S., Deason, A. J., & Frenk, C. S. (2018). The Imprint of Cosmic Reionization on the Luminosity Function of Galaxies. Astrophysical Journal, 863(2), Article 123. https://doi.org/10.3847/1538-4357/aacbc4
Sohn, S. T., Watkins, L. L., Fardal, M. A., van der Marel, R. P., Deason, A. J., Besla, G., & Bellini, A. (2018). Absolute Hubble Space Telescope Proper Motion (HSTPROMO) of Distant Milky Way Globular Clusters: Galactocentric Space Velocities and the Milky Way Mass. Astrophysical Journal, 862(1), Article 52. https://doi.org/10.3847/1538-4357/aacd0b
Belokurov, V., Erkal, D., Evans, N., Koposov, S., & Deason, A. (2018). Co-formation of the disc and the stellar halo★. Monthly Notices of the Royal Astronomical Society, 478(1), 611-619. https://doi.org/10.1093/mnras/sty982
Deason, A. J., Belokurov, V., Koposov, S. E., & Lancaster, L. (2018). Apocenter Pile-up: Origin of the Stellar Halo Density Break. Astrophysical Journal Letters, 862(1), Article L1. https://doi.org/10.3847/2041-8213/aad0ee
Belokurov, V., Deason, A., Koposov, S., Catelan, M., Erkal, D., Drake, A., & Evans, N. (2018). Unmixing the Galactic Halo with RR Lyrae tagging. Monthly Notices of the Royal Astronomical Society, 477(2), 1472-1483. https://doi.org/10.1093/mnras/sty615
Deason, A. J., Belokurov, V., & Koposov, S. E. (2018). To the Galactic Virial Radius with Hyper Suprime-Cam. Astrophysical Journal, 852(2), Article 118. https://doi.org/10.3847/1538-4357/aa9d19
Deason, A., Belokurov, V., & Koposo, V. S. (2018). Cresting the wave: proper motions of the Eastern Banded Structure. Monthly Notices of the Royal Astronomical Society, 473(2), 2428-2433. https://doi.org/10.1093/mnras/stx2528
Deason, A. J., Belokurov, V., Koposov, S. E., Gómez, F. A., Grand, R. J., Marinacci, F., & Pakmor, R. (2017). The slight spin of the old stellar halo. Monthly Notices of the Royal Astronomical Society, 470(2), 1259-1273. https://doi.org/10.1093/mnras/stx1301
Mathur, S., Gupta, A., Page, K., Pogge, R., Krongold, Y., Goad, M., Adams, S., Anderson, M., Arévalo, P., Barth, A., Bazhaw, C., Beatty, T., Bentz, M., Bigley, A., Bisogni, S., Borman, G., Boroson, T., Bottorff, M., Brandt, W., Breeveld, A., …Zu, Y. (2017). Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the Ultraviolet Anomaly in NGC 5548 with X-Ray Spectroscopy. Astrophysical Journal, 846(1), Article 55. https://doi.org/10.3847/1538-4357/aa832b
Deason, A., Belokurov, V., Erkal, D., Koposov, S., & Mackey, D. (2017). The Clouds are breaking: tracing the Magellanic system with Gaia DR1 Mira variables. Monthly Notices of the Royal Astronomical Society, 467(3), 2636-2647. https://doi.org/10.1093/mnras/stx263
Pei, L., Fausnaugh, M., Barth, A., Peterson, B., Bentz, M., De Rosa, G., Denney, K., Goad, M., Kochanek, C., Korista, K., Kriss, G., Pogge, R., Bennert, V., Brotherton, M., Clubb, K., Dalla Bontà, E., Filippenko, A., Greene, J., Grier, C., Vestergaard, M., …Zu, Y. (2017). Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548. Astrophysical Journal, 837(2), Article 131. https://doi.org/10.3847/1538-4357/aa5eb1
Belokurov, V., Erkal, D., Deason, A., Koposov, S., De Angeli, F., Wyn Evans, D., Fraternali, F., & Mackey, D. (2016). Clouds, Streams and Bridges. Redrawing the blueprint of the Magellanic System with Gaia DR1. Monthly Notices of the Royal Astronomical Society, 466(4), 4711-4730. https://doi.org/10.1093/mnras/stw3357
Deason, A., Mao, Y.-Y., & Wechsler, R. (2016). The Eating Habits of Milky Way-mass Halos: Destroyed Dwarf Satellites and the Metallicity Distribution of Accreted Stars. Astrophysical Journal, 821(1), Article 5. https://doi.org/10.3847/0004-637x/821/1/5
Cunningham, E., Deason, A., Guhathakurta, P., Rockosi, C., van der Marel, R., Toloba, E., Gilbert, K., Sohn, S., & Dorman, C. (2016). Isotropic at the Break? 3D Kinematics of Milky Way Halo Stars in the Foreground of M31. Astrophysical Journal, 820(1), Article 18. https://doi.org/10.3847/0004-637x/820/1/18
Deason, A., Wetzel, A., Garrison-Kimmel, S., & Belokurov, V. (2015). Satellites of LMC-mass dwarfs: close friendships ruined by Milky Way mass haloes. Monthly Notices of the Royal Astronomical Society, 453(4), 3568-3574. https://doi.org/10.1093/mnras/stv1939
Wetzel, A., Deason, A., & Garrison-Kimmel, S. (2015). Satellite Dwarf Galaxies in a Hierarchical Universe: Infall Histories, Group Preprocessing, and Reionization. Astrophysical Journal, 807(1), Article 49. https://doi.org/10.1088/0004-637x/807/1/49
Deason, A., Belokurov, V., & Weisz, D. (2015). The progenitors of the Milky Way stellar halo: big bricks favoured over little bricks. Monthly Notices of the Royal Astronomical Society: Letters, 448(1), L77-L81. https://doi.org/10.1093/mnrasl/slv001
Deason, A., Wetzel, A., & Garrison-Kimmel, S. (2014). Satellite Dwarf Galaxies in a Hierarchical Universe: The Prevalence of Dwarf-Dwarf Major Mergers. Astrophysical Journal, 794, https://doi.org/10.1088/0004-637x/794/2/115
Pillepich, A., Vogelsberger, M., Deason, A., Rodriguez-Gomez, V., Genel, S., Nelson, D., Torrey, P., Sales, L., Marinacci, F., Springel, V., Sijacki, D., & Hernquist, L. (2014). Halo mass and assembly history exposed in the faint outskirts: the stellar and dark matter haloes of Illustris galaxies. Monthly Notices of the Royal Astronomical Society, 444, 237-249. https://doi.org/10.1093/mnras/stu1408
Deason, A., Belokurov, V., Hamren, K., Koposov, S., Gilbert, K., Beaton, R., Dorman, C., Guhathakurta, P., Majewski, S., & Cunningham, E. (2014). TriAnd and its siblings: satellites of satellites in the Milky Way halo. Monthly Notices of the Royal Astronomical Society, 444(4), 3975-3985. https://doi.org/10.1093/mnras/stu1764
Deason, A., Belokurov, V., Koposov, S., & Rockosi, C. (2014). Touching The Void: A Striking Drop in Stellar Halo Density Beyond 50 kpc. Astrophysical Journal, 787, https://doi.org/10.1088/0004-637x/787/1/30
Deason, A., Conroy, C., Wetzel, A., & Tinker, J. (2013). Stellar Mass-gap as a Probe of Halo Assembly History and Concentration: Youth Hidden among Old Fossils. Astrophysical Journal, 777, https://doi.org/10.1088/0004-637x/777/2/154
Rashkov, V., Pillepich, A., Deason, A., Madau, P., Rockosi, C., Guedes, J., & Mayer, L. (2013). A ``Light,'' Centrally Concentrated Milky Way Halo?. Astrophysical Journal Letters, 773, https://doi.org/10.1088/2041-8205/773/2/l32
Deason, A., Auger, M., Belokurov, V., & Evans, N. (2013). The Dark Matter Halo Concentration and Stellar Initial Mass Function of a CASSOWARY Group. Astrophysical Journal, 773, https://doi.org/10.1088/0004-637x/773/1/7
Deason, A., Van der Marel, R., Guhathakurta, P., Sohn, S., & Brown, T. (2013). The Velocity Anisotropy of Distant Milky Way Halo Stars from Hubble Space Telescope Proper Motions. Astrophysical Journal, 766, https://doi.org/10.1088/0004-637x/766/1/24
Deason, A., Belokurov, V., Evans, N., & Johnston, K. (2013). Broken and Unbroken: The Milky Way and M31 Stellar Halos. Astrophysical Journal, 763, https://doi.org/10.1088/0004-637x/763/2/113
Deason, A., Belokurov, V., Evans, N., Koposov, S., Cooke, R., Peñarrubia, J., Laporte, C., Fellhauer, M., Walker, M., & Olszewski, E. (2012). The cold veil of the Milky Way stellar halo. Monthly Notices of the Royal Astronomical Society, 425(4), 2840-2853. https://doi.org/10.1111/j.1365-2966.2012.21639.x
Deason, A., Belokurov, V., Evans, N., Watkins, L., & Fellhauer, M. (2012). The stretching of Hercules. Monthly Notices of the Royal Astronomical Society, 425, L101-L105. https://doi.org/10.1111/j.1745-3933.2012.01314.x
Deason, A., Belokurov, V., Evans, N., & An, J. (2012). Broken degeneracies: the rotation curve and velocity anisotropy of the Milky Way halo. Monthly Notices of the Royal Astronomical Society, 424, L44-L48. https://doi.org/10.1111/j.1745-3933.2012.01283.x
McCarthy, I., Font, A., Crain, R., Deason, A., Schaye, J., & Theuns, T. (2012). Global structure and kinematics of stellar haloes in cosmological hydrodynamic simulations. Monthly Notices of the Royal Astronomical Society, 420(3), 2245-2262. https://doi.org/10.1111/j.1365-2966.2011.20189.x
Deason, A., Belokurov, V., Evans, N., & McCarthy, I. (2012). Elliptical Galaxy Masses Out to Five Effective Radii: The Realm of Dark Matter. Astrophysical Journal, 748, https://doi.org/10.1088/0004-637x/748/1/2
An, J., Evans, N., & Deason, A. (2012). Mass estimators in the Gaia era. Monthly Notices of the Royal Astronomical Society, 420, 2562-2568. https://doi.org/10.1111/j.1365-2966.2011.20226.x
Deason, A., Belokurov, V., & Evans, N. (2011). The Milky Way stellar halo out to 40 kpc: squashed, broken but smooth. Monthly Notices of the Royal Astronomical Society, 416, 2903-2915. https://doi.org/10.1111/j.1365-2966.2011.19237.x
Deason, A., McCarthy, I., Font, A., Evans, N., Frenk, C., Belokurov, V., Libeskind, N., Crain, R., & Theuns, T. (2011). Mismatch and misalignment: dark haloes and satellites of disc galaxies. Monthly Notices of the Royal Astronomical Society, 415(3), 2607-2625. https://doi.org/10.1111/j.1365-2966.2011.18884.x
Evans, N., An, J., & Deason, A. (2011). Accurate Mass Estimators for Navarro-Frenk-White Halos. Astrophysical Journal Letters, 730, https://doi.org/10.1088/2041-8205/730/2/l26
Deason, A., Belokurov, V., & Evans, N. (2011). Rotation of halo populations in the Milky Way and M31. Monthly Notices of the Royal Astronomical Society, 411, 1480-1494. https://doi.org/10.1111/j.1365-2966.2010.17785.x
Pontzen, A., Deason, A., Governato, F., Pettini, M., Wadsley, J., Quinn, T., Brooks, A., Bellovary, J., & Fynbo, J. (2010). The nature of HIabsorbers in gamma-ray burst afterglows: clues from hydrodynamic simulations. Monthly Notices of the Royal Astronomical Society, 402, 1523-1535. https://doi.org/10.1111/j.1365-2966.2009.16017.x
Cowley, S., Deason, A., & Bunce, E. (2008). Axi-symmetric models of auroral current systems in Jupiter's magnetosphere with predictions for the Juno mission. Annales Geophysicae, 26(12), 4051-4074. https://doi.org/10.5194/angeo-26-4051-2008

Staff profile

Professor Alis Deason

Research interests

Publications