| Title: |
Cosmological constraints from galaxy clustering and galaxy-galaxy lensing with extended SubHalo Abundance Matching |
| Authors: |
Mahony, Constance; Contreras, Sergio; Angulo, Raul E.; Alonso, David; Georgiou, Christos; Dvornik, Andrej; Sub String Theory Cosmology and ElemPart; Theoretical Physics |
| Publication Year: |
2026 |
| Subject Terms: |
cosmological parameters; large-scale structure of the Universe; Astronomy and Astrophysics; Space and Planetary Science |
| Description: |
We present the first cosmological constraints from a joint analysis of galaxy clustering and galaxy-galaxy lensing using extended SubHalo Abundance Matching (SHAMe). We analyse stellar mass-selected Galaxy And Mass Assembly galaxy clustering and Kilo-Degree Survey (KiDS-1000) galaxy-galaxy lensing and find constraints on, in agreement with Planck at 1.7, with the mass density fluctuation amplitude in 8 sphere at present and the density parameter in total matter. These results are in agreement with the cosmic microwave background results from Planck. We are able to constrain all five SHAMe parameters, which describe the galaxy-subhalo connection. We validate our methodology by first applying it to simulated catalogues, generated from the TNG300 simulation, which mimic the stellar mass selection of our real data. We show that we are able to recover the input cosmology for both our fiducial and all-scale analyses. Our all-scale analysis extends to scales of galaxy-galaxy lensing below |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| ISSN: |
0035-8711 |
| Relation: |
https://dspace.library.uu.nl/handle/1874/480408 |
| Availability: |
https://dspace.library.uu.nl/handle/1874/480408 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.EB074D |
| Database: |
BASE |