Bibcode
Zacharegkas, G.; Chang, C.; Prat, J.; Hartley, W.; Mucesh, S.; Alarcon, A.; Alves, O.; Amon, A.; Bechtol, K.; Becker, M. R.; Bernstein, G.; Blazek, J.; Campos, A.; Carnero Rosell, A.; Carrasco Kind, M.; Cawthon, R.; Chen, R. C.; Choi, A.; Cordero, J.; Davis, C. P.; DeRose, J.; Diehl, H.; Dodelson, S.; Doux, C.; Drlica-Wagner, A.; Eckert, K.; Eifler, T. F.; Elvin-Poole, J.; Everett, S.; Fang, X.; Ferte, A.; Gatti, M.; Giannini, G.; Gruen, D.; Gruendl, R. A.; Harrison, I.; Huang, H.; Huff, E. M.; Jarvis, M.; Krause, E.; Kuropatkin, N.; Leget, P. F.; MacCrann, N.; McCullough, J.; Myles, J.; Alsina, A. N.; Pandey, S.; Raveri, M.; Rollins, R. P.; Roodman, A.; Ross, A. J.; Rykoff, E.; Sánchez, C.; Secco, L. F.; Sevilla-Noarbe, I.; Sheldon, E.; Shin, T.; Troxel, M. A.; Tutusaus, I.; Yanny, B.; Yin, B.; Zhang, Y.; Zuntz, J.; Aguena, M.; Andrade-Oliveira, F.; Bacon, D.; Brooks, D.; Burke, D. L.; Carretero, J.; Castander, F. J.; da Costa, L. N.; da Silva Pereira, M. E.; Davis, T. M.; De Vicente, J.; Flaugher, B.; Frieman, J.; Garcia-Bellido, J.; Gaztañaga, E.; Gutierrez, G.; Hinton, S. R.; Hollowood, D. L.; James, D. J.; Kuehn, K.; Lahav, O.; Lee, S.; Marshall, J. L.; Mena-Fernandez, J.; Miquel, R.; Mohr, J. J.; Ogando, R. L. C.; Plazas Malagon, A. A.; Porredon, A.; Samuroff, S.; Sanchez, E.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Swanson, M. E. C.; Tucker, D. L.; Vikram, V. et al.
Referencia bibliográfica
The Open Journal of Astrophysics
Fecha de publicación:
1
2026
Número de citas
0
Número de citas referidas
0
Descripción
We develop a framework to study the relation between the stellar mass of a galaxy and the total mass of its host dark matter halo using galaxy clustering and galaxy-galaxy lensing measurements. We model a wide range of scales, roughly from to , using a theoretical framework based on the Halo Occupation Distribution and data from Year 3 of the Dark Energy Survey (DES) dataset. The new advances of this work include: 1) the generation and validation of a new stellar mass-selected galaxy sample in the range of logM⋆/M☉̃9.6 to ̃11.5; 2) the joint-modeling framework of galaxy clustering and galaxy-galaxy lensing that is able to describe our stellar mass-selected sample deep into the 1-halo regime; and 3) stellar-to-halo mass relation (SHMR) constraints from this dataset. In general, our SHMR constraints agree well with existing literature with various weak lensing measurements. We constrain the free parameters in the SHMR functional form logM⋆(Mh)=log(∊M1)+f[log(Mh/M1)]−f(0), with f(x)≡−log(10αx+1)+δ[log(1+exp(x))]γ/[1+exp(10−x)], to be logM1=11.506−0.404+0.325, log∊=−1.632−0.181+0.306, α=−1.638−0.099+0.108, γ=0.596−0.210+0.251 and δ=3.810−1.811+2.045. The inferred average satellite fraction is within ̃5−35% for our fiducial results and we do not see any clear trends with redshift or stellar mass. Furthermore, we find that the inferred average galaxy bias values follow the generally expected trends with stellar mass and redshift. Our study is the first SHMR in DES in this mass range, and we expect the stellar mass sample to be of general interest for other science cases.