MaNGA DynPop – VI. Matter density slopes from dynamical models of 6000 galaxies versus cosmological simulations: the interplay between baryonic and dark matter
(2024)
Journal Article
Li, S., Li, R., Zhu, K., Lu, S., Cappellari, M., Mao, S., …Gao, L. (2024). MaNGA DynPop – VI. Matter density slopes from dynamical models of 6000 galaxies versus cosmological simulations: the interplay between baryonic and dark matter. Monthly Notices of the Royal Astronomical Society, 529(4), 4633-4649. https://doi.org/10.1093/mnras/stae838
All Outputs (31)
Assessing mass-loss and stellar-to-halo mass ratio of satellite galaxies: a galaxy–galaxy lensing approach utilizing DECaLS DR8 data (2024)
Journal Article
Wang, C., Li, R., Shan, H., Xu, W., Yao, J., Jing, Y., …Chen, Q. (2024). Assessing mass-loss and stellar-to-halo mass ratio of satellite galaxies: a galaxy–galaxy lensing approach utilizing DECaLS DR8 data. Monthly Notices of the Royal Astronomical Society, 528(2), 2728-2741. https://doi.org/10.1093/mnras/stae121The galaxy–galaxy lensing technique allows us to measure the subhalo mass of satellite galaxies, studying their mass-loss and evolution within galaxy clusters and providing direct observational validation for theories of galaxy formation. In this stu... Read More about Assessing mass-loss and stellar-to-halo mass ratio of satellite galaxies: a galaxy–galaxy lensing approach utilizing DECaLS DR8 data.
The mass accretion history of dark matter haloes down to Earth mass (2023)
Journal Article
Liu, Y., Gao, L., Bose, S., Frenk, C. S., Jenkins, A., Springel, V., Wang, J., White, S. D. M., & Zheng, H. (2023). The mass accretion history of dark matter haloes down to Earth mass. Monthly Notices of the Royal Astronomical Society, 527(4), 11740-11750. https://doi.org/10.1093/mnras/stae003We take advantage of the unprecedented dynamical range provided by the ‘Cosmic-Zoom’ project to study the mass accretion history (MAH) of present-day dark matter haloes o v er the entire mass range present in the Lambda cold dark matter paradigm when... Read More about The mass accretion history of dark matter haloes down to Earth mass.
MaNGA DynPop – III. Stellar dynamics versus stellar population relations in 6000 early-type and spiral galaxies: Fundamental Plane, mass-to-light ratios, total density slopes, and dark matter fractions (2023)
Journal Article
Zhu, K., Lu, S., Cappellari, M., Li, R., Mao, S., Gao, L., & Ge, J. (2024). MaNGA DynPop – III. Stellar dynamics versus stellar population relations in 6000 early-type and spiral galaxies: Fundamental Plane, mass-to-light ratios, total density slopes, and dark matter fractions. Monthly Notices of the Royal Astronomical Society, 527(1), 706–730. https://doi.org/10.1093/mnras/stad3213We present dynamical scaling relations, combined with the stellar population properties, for a subsample of about 6000 nearby
galaxies with the most reliable dynamical models extracted from the full Mapping Nearby Galaxies at Apache Point Observator... Read More about MaNGA DynPop – III. Stellar dynamics versus stellar population relations in 6000 early-type and spiral galaxies: Fundamental Plane, mass-to-light ratios, total density slopes, and dark matter fractions.
MaNGA DynPop – IV. Stacked total density profile of galaxy groups and clusters from combining dynamical models of integral-field stellar kinematics and galaxy–galaxy lensing (2023)
Journal Article
Wang, C., Li, R., Zhu, K., Shan, H., Xu, W., Cappellari, M., …Xie, Y. (2024). MaNGA DynPop – IV. Stacked total density profile of galaxy groups and clusters from combining dynamical models of integral-field stellar kinematics and galaxy–galaxy lensing. Monthly Notices of the Royal Astronomical Society, 527(1), 1580–1593. https://doi.org/10.1093/mnras/stad3214We present the measurement of total and stellar/dark matter decomposed mass density profile around a sample of galaxy groups
and clusters with dynamical masses derived from integral-field stellar kinematics from the MaNGA survey in Paper I and weak... Read More about MaNGA DynPop – IV. Stacked total density profile of galaxy groups and clusters from combining dynamical models of integral-field stellar kinematics and galaxy–galaxy lensing.
Formation of massive disc galaxies in the IllustrisTNG simulation (2021)
Journal Article
Zeng, G., Wang, L., & Gao, L. (2021). Formation of massive disc galaxies in the IllustrisTNG simulation. Monthly Notices of the Royal Astronomical Society, 507(3), 3301-3311. https://doi.org/10.1093/mnras/stab2294We investigate the formation history of massive disc galaxies in hydrodynamical simulation – the IllustrisTNG, to study why massive disc galaxies survive through cosmic time. 83 galaxies in the simulation are selected with M*,z = 0 > 8 × 1010 M⊙ and... Read More about Formation of massive disc galaxies in the IllustrisTNG simulation.
Constraining the inner density slope of massive galaxy clusters (2020)
Journal Article
He, Q., Li, H., Li, R., Frenk, C. S., Schaller, M., Barnes, D., Bahé, Y., Kay, S. T., Gao, L., & Vecchia, C. D. (2020). Constraining the inner density slope of massive galaxy clusters. Monthly Notices of the Royal Astronomical Society, 496(4), 4717-4733. https://doi.org/10.1093/mnras/staa1769We determine the inner density profiles of massive galaxy clusters (M200 > 5 × 1014 M⊙) in the Cluster-EAGLE (C-EAGLE) hydrodynamic simulations, and investigate whether the dark matter density profiles can be correctly estimated from a combination of... Read More about Constraining the inner density slope of massive galaxy clusters.
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/stz2969We 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.
Dark-matter-deficient galaxies in hydrodynamical simulations (2019)
Journal Article
Jing, Y., Wang, C., Li, R., Liao, S., Wang, J., Guo, Q., & Gao, L. (2019). Dark-matter-deficient galaxies in hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 488(3), 3298-3307. https://doi.org/10.1093/mnras/stz1839Low-mass galaxies are expected to be dark-matter-dominated even within their central regions. Recently, two observations reported two dwarf galaxies in a group environment with very little dark matter in their central regions. We explore the populati... Read More about Dark-matter-deficient galaxies in hydrodynamical simulations.
The optimal gravitational softening length for cosmological N-body simulations (2019)
Journal Article
Zhang, T., Liao, S., Li, M., & Gao, L. (2019). The optimal gravitational softening length for cosmological N-body simulations. Monthly Notices of the Royal Astronomical Society, 487(1), 1227-1232. https://doi.org/10.1093/mnras/stz1370Gravitational softening length is one of the key parameters to properly set up a cosmological N-body simulation. In this paper, we perform a large suit of high-resolution N-body simulations to revise the optimal softening scheme proposed by Power et... Read More about The optimal gravitational softening length for cosmological N-body simulations.
Impact of filaments on galaxy formation in their residing dark matter haloes (2019)
Journal Article
Liao, S., & Gao, L. (2019). Impact of filaments on galaxy formation in their residing dark matter haloes. Monthly Notices of the Royal Astronomical Society, 485(1), 464-473. https://doi.org/10.1093/mnras/stz441We use a high-resolution zoom-in hydrodynamical simulation to investigate the impact of filaments on galaxy formation in their residing dark matter haloes. A method based on the density field and the Hoshen–Kopelman algorithm is developed to identify... Read More about Impact of filaments on galaxy formation in their residing dark matter haloes.
The abundance of satellite galaxies in the inner region of ΛCDM Milky Way sized haloes (2018)
Journal Article
Li, M., Gao, L., & Wang, J. (2019). The abundance of satellite galaxies in the inner region of ΛCDM Milky Way sized haloes. Monthly Notices of the Royal Astronomical Society, 483(2), 2000-2006. https://doi.org/10.1093/mnras/sty3292The concordance lambda cold dark matter (ΛCDM) cosmology predicts tens of satellite galaxies distributed in the inner region (<40 kpc) of the Milky Way (MW), yet at most 12 were discovered at present day, including three discovered very recently by D...
PHoToNs–A parallel heterogeneous and threads oriented code for cosmological N-body simulation (2018)
Journal Article
Wang, Q., Cao, Z.-Y., Gao, L., Chi, X.-B., Meng, C., Wang, J., & Wang, L. (2018). PHoToNs–A parallel heterogeneous and threads oriented code for cosmological N-body simulation. Research in Astronomy and Astrophysics, 18(6), Article 062. https://doi.org/10.1088/1674-4527/18/6/62We introduce a new code for cosmological simulations, PHoToNs, which incorporates features for performing massive cosmological simulations on heterogeneous high performance computer (HPC) systems and threads oriented programming. PHoToNs adopts a hyb... Read More about PHoToNs–A parallel heterogeneous and threads oriented code for cosmological N-body simulation.
SDSS-IV MaNGA: a distinct mass distribution explored in slow-rotating early-type galaxies (2018)
Journal Article
Rong, Y., Li, H., Wang, J., Gao, L., Li, R., Ge, J., Jing, Y., Pan, J., Fernández-Trincado, J., Valenzuela, O., & Ortíz, E. A. (2018). SDSS-IV MaNGA: a distinct mass distribution explored in slow-rotating early-type galaxies. Monthly Notices of the Royal Astronomical Society, 477(1), 230-235. https://doi.org/10.1093/mnras/sty697We study the radial acceleration relation (RAR) for early-type galaxies (ETGs) in the SDSS MaNGA MPL5 data set. The complete ETG sample show a slightly offset RAR from the relation reported by McGaugh et al. (2016) at the low-acceleration end; we fin... Read More about SDSS-IV MaNGA: a distinct mass distribution explored in slow-rotating early-type galaxies.
Do satellite galaxies trace matter in galaxy clusters? (2018)
Journal Article
Wang, C., Li, R., Gao, L., Shan, H., Kneib, J., Wang, W., …Erben, T. (2018). Do satellite galaxies trace matter in galaxy clusters?. Monthly Notices of the Royal Astronomical Society, 475(3), 4020-4026. https://doi.org/10.1093/mnras/sty073The spatial distribution of satellite galaxies encodes rich information of the structure and assembly history of galaxy clusters. In this paper, we select a red-sequence Matched-filter Probabilistic Percolation cluster sample in SDSS Stripe 82 region... Read More about Do satellite galaxies trace matter in galaxy clusters?.
Massive quiescent galaxies at z > 3 in the Millennium simulation populated by a semi-analytic galaxy formation model (2017)
Journal Article
Rong, Y., Jing, Y., Gao, L., Guo, Q., Wang, J., Sun, S., …Pan, J. (2017). Massive quiescent galaxies at z > 3 in the Millennium simulation populated by a semi-analytic galaxy formation model. Monthly Notices of the Royal Astronomical Society: Letters, 471(1), L36-L40. https://doi.org/10.1093/mnrasl/slx099We take advantage of the statistical power of the large-volume dark-matter-only Millennium simulation (MS), combined with a sophisticated semi-analytic galaxy formation model, to explore whether the recently reported z = 3.7 quiescent galaxy ZF-COSMO... Read More about Massive quiescent galaxies at z > 3 in the Millennium simulation populated by a semi-analytic galaxy formation model.
A Universe of ultradiffuse galaxies: theoretical predictions from ΛCDM simulations (2017)
Journal Article
Rong, Y., Guo, Q., Gao, L., Liao, S., Xie, L., Puzia, T. H., …Pan, J. (2017). A Universe of ultradiffuse galaxies: theoretical predictions from ΛCDM simulations. Monthly Notices of the Royal Astronomical Society, 470(4), 4231-4240. https://doi.org/10.1093/mnras/stx1440A particular population of galaxies have drawn much interest recently, which are as faint as typical dwarf galaxies but have the sizes as large as L* galaxies, the so called ultradiffuse galaxies (UDGs). The lack of tidal features of UDGs in dense en... Read More about A Universe of ultradiffuse galaxies: theoretical predictions from ΛCDM simulations.
The segregation of baryons and dark matter during halo assembly (2017)
Journal Article
Liao, S., Gao, L., Frenk, C. S., Guo, Q., & Wang, J. (2017). The segregation of baryons and dark matter during halo assembly. Monthly Notices of the Royal Astronomical Society, 470(2), 2262-2269. https://doi.org/10.1093/mnras/stx1391The standard galaxy formation theory assumes that baryons and dark matter are initially well mixed before becoming segregated due to radiative cooling. We use non-radiative hydrodynamical simulations to explicitly examine this assumption and find tha... Read More about The segregation of baryons and dark matter during halo assembly.
The phase-space density of fermionic dark matter haloes (2013)
Journal Article
Shao, S., Gao, L., Theuns, T., & Frenk, C. (2013). The phase-space density of fermionic dark matter haloes. Monthly Notices of the Royal Astronomical Society, 430(3), 2346-2357. https://doi.org/10.1093/mnras/stt053We have performed a series of numerical experiments to investigate how the primordial thermal velocities of fermionic dark matter particles affect the physical and phase-space density profiles of the dark matter haloes into which they collect. The in... Read More about The phase-space density of fermionic dark matter haloes.
The Phoenix Project: the dark side of rich Galaxy clusters (2012)
Journal Article
Gao, L., Navarro, J., Frenk, C., Jenkins, A., Springel, V., & White, S. (2012). The Phoenix Project: the dark side of rich Galaxy clusters. Monthly Notices of the Royal Astronomical Society, 425(3), 2169-2186. https://doi.org/10.1111/j.1365-2966.2012.21564.xWe introduce the Phoenix Project, a set of Λ cold dark matter (CDM) simulations of the dark matter component of nine rich galaxy clusters. Each cluster is simulated at least at two different numerical resolutions. For eight of them, the highest resol... Read More about The Phoenix Project: the dark side of rich Galaxy clusters.