Dr Shi Shao's Outputs (9)

The galaxy size to halo spin relation of disc galaxies in cosmological hydrodynamical simulations (2022)
Journal Article
Yang, H., Gao, L., Frenk, C. S., Grand, R. J., Guo, Q., Liao, S., & Shao, S. (2023). The galaxy size to halo spin relation of disc galaxies in cosmological hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 518(4), 5253-5259. https://doi.org/10.1093/mnras/stac3335

In the standard disc galaxy formation model, the sizes of galactic discs are tightly related to the spin parameters λ of their dark matter haloes. The model has been wildly adopted by various semi-analytical galaxy formation models which have been ex... Read More about The galaxy size to halo spin relation of disc galaxies in cosmological hydrodynamical simulations.

The spatial distribution of satellites in galaxy clusters (2022)
Journal Article
Gu, Q., Guo, Q., Zhang, T., Cautun, M., Lacey, C., Frenk, C. S., & Shao, S. (2022). The spatial distribution of satellites in galaxy clusters. Monthly Notices of the Royal Astronomical Society, 514(1), 390-402. https://doi.org/10.1093/mnras/stac1292

The planar distributions of satellite galaxies around the Milky Way and Andromeda have been extensively studied as potential challenges to the standard cosmological model. Using the Sloan Digital Sky Survey and the Millennium simulation, we extend su... Read More about The spatial distribution of satellites in galaxy clusters.

Measuring the Mass of Missing Baryons in the Halo of Andromeda Galaxy with Gamma-Ray Observations (2021)
Journal Article
Zhang, Y., Liu, R.-Y., Li, H., Shao, S., Yan, H., & Wang, X.-Y. (2021). Measuring the Mass of Missing Baryons in the Halo of Andromeda Galaxy with Gamma-Ray Observations. Astrophysical Journal, 911(1), Article 58. https://doi.org/10.3847/1538-4357/abe9b6

It has been suggested that a huge amount of baryon resides in the circumgalactic medium (CGM) extending out to the virial radii of galaxies. In this work we attempt to measure the baryon mass in the CGM with a novel method based on the gamma-ray obse... Read More about Measuring the Mass of Missing Baryons in the Halo of Andromeda Galaxy with Gamma-Ray Observations.

The twisted dark matter halo of the Milky Way (2020)
Journal Article
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

We analyse systems analogous to the Milky Way (MW) in the EAGLE cosmological hydrodynamics simulation in order to deduce the likely structure of the MW’s dark matter (DM) halo. We identify MW mass haloes in the simulation whose satellite galaxies hav... Read More about The twisted dark matter halo of the Milky Way.

Galaxy properties in the cosmic web of EAGLE simulation (2020)
Journal Article
Xu, W., Guo, Q., Zheng, H., Gao, L., Lacey, C., Gu, Q., Liao, S., Shao, S., Mao, T., Zhang, T., & Chen, X. (2020). Galaxy properties in the cosmic web of EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 498(2), 1839-1851. https://doi.org/10.1093/mnras/staa2497

We investigate the dependence of the galaxy properties on cosmic web environments using the most up-to-date hydrodynamic simulation: Evolution and Assembly of Galaxies and their Environments (EAGLE). The baryon fractions in haloes and the amplitudes... Read More about Galaxy properties in the cosmic web of EAGLE simulation.

Ultra-diffuse galaxies in the Auriga simulations (2019)
Journal Article
Liao, S., Gao, L., Frenk, C. S., Grand, R. J., Guo, Q., Gómez, F. A., Marinacci, F., Pakmor, R., Shao, S., & Springel, V. (2019). Ultra-diffuse galaxies in the Auriga simulations. Monthly Notices of the Royal Astronomical Society, 490(4), 5182-5195. https://doi.org/10.1093/mnras/stz2969

We investigate the formation of ultra-diffuse galaxies (UDGs) using the Auriga high-resolution cosmological magneto-hydrodynamical simulations of Milky Way-sized galaxies. We identify a sample of 92 UDGs in the simulations that match a wide range of... Read More about Ultra-diffuse galaxies in the Auriga simulations.

SDSS-IV MaNGA: the inner density slopes of nearby galaxies (2019)
Journal Article
Li, R., Li, H., Shao, S., Lu, S., Zhu, K., Wang, C., Gao, L., Mao, S., Dutton, A. A., Ge, J., Wang, Y., Leauthaud, A., Zheng, Z., Bundy, K., & Brownstein, J. R. (2019). SDSS-IV MaNGA: the inner density slopes of nearby galaxies. Monthly Notices of the Royal Astronomical Society, 490(2), 2124-2138. https://doi.org/10.1093/mnras/stz2565

We derive the mass-weighted total density slopes within the effective (half-light) radius, γ′, for more than 2000 nearby galaxies from the SDSS-IV (Sloan Digital Sky Survey IV) MaNGA survey using Jeans-anisotropic-models applied to integral field uni... Read More about SDSS-IV MaNGA: the inner density slopes of nearby galaxies.

Evolution of galactic planes of satellites in the eagle simulation (2019)
Journal Article
Shao, S., Cautun, M., & Frenk, C. S. (2019). Evolution of galactic planes of satellites in the eagle simulation. Monthly Notices of the Royal Astronomical Society, 488(1), 1166-1179. https://doi.org/10.1093/mnras/stz1741

We study the formation of planes of dwarf galaxies around Milky Way (MW)-mass haloes in the EAGLE galaxy formation simulation. We focus on satellite systems similar to the one in the MW: spatially thin or with a large fraction of members orbiting in... Read More about Evolution of galactic planes of satellites in the eagle simulation.

Gamma-Ray Production in the Extended Halo of the Galaxy and Possible Implications for the Origin of Galactic Cosmic Rays (2019)
Journal Article
Liu, R.-Y., Yan, H., Wang, X.-Y., Shao, S., & Li, H. (2019). Gamma-Ray Production in the Extended Halo of the Galaxy and Possible Implications for the Origin of Galactic Cosmic Rays. Astrophysical Journal, 871(1), Article 40. https://doi.org/10.3847/1538-4357/aaf567

Various studies have implied the existence of a gaseous halo around the Galaxy extending out to ~100 kpc. Galactic cosmic rays (CRs) that propagate to the halo, either by diffusion or by convection with the possibly existing large-scale Galactic wind... Read More about Gamma-Ray Production in the Extended Halo of the Galaxy and Possible Implications for the Origin of Galactic Cosmic Rays.