Просмотр новости
Найдите то, что Вас интересует
Спутники
РН
SpaceX
Роскосмос
NASA
СпутникиРНSpaceXРоскосмосNASAThe aim of this work is to construct mock galaxy catalogues that accurately reproduce the redshift evolution of galaxy number density, clustering statistics, and baryonic properties, such as stellar mass for luminous red galaxies (LRGs) and absolute magnitude in the r-band for the bright galaxy sample (BGS), based on the first three years of observations from the Dark Energy Spectroscopic Instrument (DESI). To achieve this, we applied the subhalo abundance matching (SHAM) technique to the Uchuu N-body simulation, which follows the evolution of 2.1 trillion particles within a volume of 8 h -3 Gpc3, assuming a Planck base-ΛCDM cosmology. Using SHAM, we populated Uchuu subhalos with LRGs and BGS-BRIGHT (r < 19.5) galaxies up to redshift z = 1.1, assigning stellar masses to LRGs and luminosities to BGS galaxies (up to M r ≤ 20). Furthermore, we analyzed the clustering dependence on stellar mass and luminosity for each tracer. Our results show that the Uchuu BGS-BRIGHT and LRG mocks...
| # | Наименование новости | Тональность | Информативность | Дата публикации |
|---|---|---|---|---|
| 1 | Galaxy-multiplet clustering from DESI DR2 | 0 | 9.18 | 04-08-2026 |
| 2 | DESI DR2 Galaxy luminosity functions | 0 | 10.98 | 04-08-2026 |
| 3 | Combined tracer analysis for DESI 2024 BAO | 0 | 10.27 | 04-08-2026 |
| 4 | Clustering analysis of medium-band selected high-redshift galaxies | 0 | 12.38 | 04-08-2026 |
| 5 | A Unified Photometric Redshift Calibration for Weak Lensing Surveys Using the Dark Energy Spectroscopic Instrument | 0 | 7.2 | 04-08-2026 |
| 6 | The DESI DR1 Peculiar Velocity Survey: Global Zero-point and H0 Constraints | 0 | 8.59 | 04-08-2026 |
| 7 | The DESI Single Fiber Lens Search. I. Four Thousand Spectroscopically Selected Galaxy–Galaxy Gravitational Lens Candidates | 0 | 8.59 | 04-08-2026 |
| 8 | Galaxy Phase-space and Field-level Cosmology: The Strength of Semianalytic Models | 0 | 8.61 | 18-08-2026 |
| 9 | DESI DR1 Lyα 1D power spectrum: Validation of estimators | 0 | 8.98 | 04-08-2026 |
| 10 | Atacama Cosmology Telescope: B-mode delensing with DR6 data and external tracers of large-scale structure | 0 | 9.71 | 18-08-2026 |