The formation of cores in galaxies across cosmic time - the existence of cores is not in tension with the ΛCDM paradigm

Jackson, R A; Kaviraj, S; Yi, S K; Peirani, S; Dubois, Y; Martin, G; Devriendt, J E G; Slyz, A; Pichon, C; Volonteri, M; Kimm, T; Kraljic, K

doi:10.1093/mnras/stae056

All Outputs (9)

Assembly of the Intracluster Light in the Horizon-AGN Simulation (2024)
Journal Article
Brown, H. J., Martin, G., Pearce, F. R., Hatch, N. A., Bahé, Y. M., & Dubois, Y. (2024). Assembly of the Intracluster Light in the Horizon-AGN Simulation. Monthly Notices of the Royal Astronomical Society, 534(1), 431-443. https://doi.org/10.1093/mnras/stae2084

The diffuse stellar component of galaxy clusters made up of intergalactic stars is termed the intracluster light (ICL). Though there is a developing understanding of the mechanisms by which the ICL is formed, no strong consensus has yet been reached... Read More about Assembly of the Intracluster Light in the Horizon-AGN Simulation.

The Ultraviolet Luminosity Function at 0.6 < z < 1 from UVCANDELS (2024)
Journal Article
Sun, L., Wang, X., Teplitz, H. I., Mehta, V., Alavi, A., Rafelski, M., Windhorst, R. A., Scarlata, C., Gardner, J. P., Smith, B. M., Sunnquist, B., Prichard, L., Cheng, Y., Grogin, N., Hathi, N. P., Hayes, M., Koekemoer, A. M., Mobasher, B., Nedkova, K. V., O’Connell, R., …Zabelle, B. (2024). The Ultraviolet Luminosity Function at 0.6 < z < 1 from UVCANDELS. The Astrophysical Journal, 972(1), Article 8. https://doi.org/10.3847/1538-4357/ad5540

UVCANDELS is a Hubble Space Telescope Cycle-26 Treasury Program awarded 164 orbits of primary ultraviolet (UV) F275W imaging and coordinated parallel optical F435W imaging in four CANDELS fields—GOODS-N, GOODS-S, EGS, and COSMOS—covering a total area... Read More about The Ultraviolet Luminosity Function at 0.6 < z < 1 from UVCANDELS.

LIGHTS. Survey Overview and a Search for Low Surface Brightness Satellite Galaxies (2024)
Journal Article
Zaritsky, D., Golini, G., Donnerstein, R., Trujillo, I., Akhlaghi, M., Chamba, N., D’Onofrio, M., Eskandarlou, S., Hosseini-ShahiSavandi, S. Z., Infante-Sainz, R., Martin, G., Montes, M., Román, J., Sedighi, N., & Sharbaf, Z. (2024). LIGHTS. Survey Overview and a Search for Low Surface Brightness Satellite Galaxies. Astronomical Journal, 168(2), Article 69. https://doi.org/10.3847/1538-3881/ad543f

We present an overview of the LBT Imaging of Galactic Halos and Tidal Structures survey, which currently includes 25 nearby galaxies that are on average ∼1 mag fainter than the Milky Way, and a catalog of 54 low central surface brightness (24 < μ 0,g... Read More about LIGHTS. Survey Overview and a Search for Low Surface Brightness Satellite Galaxies.

The properties of AGN in dwarf galaxies identified via SED fitting (2024)
Journal Article
Bichang’a, B., Kaviraj, S., Lazar, I., Jackson, R. A., Das, S., Smith, D. J., Watkins, A. E., & Martin, G. (2024). The properties of AGN in dwarf galaxies identified via SED fitting. Monthly Notices of the Royal Astronomical Society, 532(1), 613-621. https://doi.org/10.1093/mnras/stae1441

Given their dominance of the galaxy number density, dwarf galaxies are central to our understanding of galaxy formation. While the incidence of active galactic nuclei (AGN) and their impact on galaxy evolution have been extensively studied in massive... Read More about The properties of AGN in dwarf galaxies identified via SED fitting.

Characterizing tidal features around galaxies in cosmological simulations (2024)
Journal Article
Khalid, A., Brough, S., Martin, G., Kimmig, L., Lagos, C., Remus, R., & Martinez-Lombilla, C. (2024). Characterizing tidal features around galaxies in cosmological simulations. Monthly Notices of the Royal Astronomical Society, 530(4), 4422–4445. https://doi.org/10.1093/mnras/stae1064

Tidal features provide signatures of recent mergers and offer a unique insight into the assembly history of galaxies. The Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) will enable an unprecedentedly large survey of tidal features... Read More about Characterizing tidal features around galaxies in cosmological simulations.

A Physically Motivated Framework to Compare Pair Fractions of Isolated Low- and High-mass Galaxies across Cosmic Time (2024)
Journal Article
Chamberlain, K., Besla, G., Patel, E., Rodriguez-Gomez, V., Torrey, P., Martin, G., …Stierwalt, S. (2024). A Physically Motivated Framework to Compare Pair Fractions of Isolated Low- and High-mass Galaxies across Cosmic Time. Astrophysical Journal, 962(2), Article 162. https://doi.org/10.3847/1538-4357/ad19d0

Low-mass galaxy pair fractions are understudied, and it is unclear whether low-mass pair fractions evolve in the same way as more massive systems over cosmic time. In the era of JWST, Roman, and Rubin, selecting galaxy pairs in a self-consistent way... Read More about A Physically Motivated Framework to Compare Pair Fractions of Isolated Low- and High-mass Galaxies across Cosmic Time.

The morphological mix of dwarf galaxies in the nearby Universe (2024)
Journal Article
Lazar, I., Kaviraj, S., Watkins, A., Martin, G., Bichang’a, B., & Jackson, R. (2024). The morphological mix of dwarf galaxies in the nearby Universe. Monthly Notices of the Royal Astronomical Society, 529(1), 499-518. https://doi.org/10.1093/mnras/stae510

We use a complete, unbiased sample of 257 dwarf (10⁠) galaxies at z < 0.08, in the COSMOS field, to study the morphological mix of the dwarf population in low-density environments. Visual inspection of extremely deep optical images and their unsharp-... Read More about The morphological mix of dwarf galaxies in the nearby Universe.

Ultraviolet and Blue Optical Imaging of UVCANDELS (2024)
Journal Article
Wang, X., Teplitz, H. I., Sun, L., Rafelski, M., Grogin, N., Prichard, L., …Zabelle, B. (2024). Ultraviolet and Blue Optical Imaging of UVCANDELS. Research Notes of the American Astronomical Society, 8(1), Article 26. https://doi.org/10.3847/2515-5172/ad1f6f

The UltraViolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey Fields (UVCANDELS) survey provided ultraviolet F275W imaging with coordinated parallel optical F435W imaging in four of the five CANDELS fields: GOODS-N, GO... Read More about Ultraviolet and Blue Optical Imaging of UVCANDELS.

The formation of cores in galaxies across cosmic time - the existence of cores is not in tension with the ΛCDM paradigm (2024)
Journal Article
Jackson, R. A., Kaviraj, S., Yi, S. K., Peirani, S., Dubois, Y., Martin, G., …Kraljic, K. (2024). The formation of cores in galaxies across cosmic time - the existence of cores is not in tension with the ΛCDM paradigm. Monthly Notices of the Royal Astronomical Society, 528(2), 1655–1667. https://doi.org/10.1093/mnras/stae056

The 'core-cusp' problem is considered a key challenge to the ΛCDM paradigm. Haloes in dark matter only simulations exhibit 'cuspy' profiles, where density continuously increases towards the centre. However, the dark matter profiles of many observed g... Read More about The formation of cores in galaxies across cosmic time - the existence of cores is not in tension with the ΛCDM paradigm.