Constraining the Stellar-to-Halo Mass Relation with Galaxy Clustering and Weak Lensing from DES Year 3 Data

Journal Article · Thu Jan 01 00:00:00 EST 2026 · Open J.Astrophys.

DOI:https://doi.org/10.33232/001c.155046· OSTI ID:2572032

Zacharegkas, G. ^[1]; Chang, C. ^[2]; Prat, J. ^[3]; Hartley, W. G. ^[4]; Mucesh, S. ^[5]; Alarcon, A. ^[6]; Alves, O. ^[7]; Amon, A. ^[8]; Bechtol, K. ^[9]; Becker, M. R. ^[10]; Bernstein, G. ^[11]; Blazek, J. ^[12]; Campos, A. ^[13]; Carnero Rosell, A. ^[14]; Carrasco Kind, M. ^[15]; Cawthon, R. ^[16]; Chen, R. ^[17]; Choi, A. ^[18]; Cordero, J. ^[19]; Davis, C. ^[20] ; Derose, J. ^[21]; Diehl, H. T. ^[22]; Dodelson, S. ^[23]; Doux, C. ^[24]; Drlica-Wagner, A. ^[25]; Eckert, K. ^[11]; Eifler, T. F. ^[26]; Elvin-Poole, J. ^[27]; Everett, S. ^[28]; Fang, X. ^[29]; Ferte, A. ^[30]; Gatti, M. ^[31]; Giannini, G. ^[31]; Gruen, D. ^[32]; Gruendl, R. A. ^[33]; Harrison, I. ^[19]; Huang, H. ^[34]; Huff, E. M. ^[30]; Jarvis, M. ^[11]; Krause, E. ^[34]; Kuropatkin, N. ^[22]; Leget, P. F. ^[35]; Maccrann, N. ^[36]; McCullough, J. ^[8]; Myles, J. ^[8]; Alsina, A. N. ^[37]; Pandey, S. ^[38]; Raveri, M. ^[39]; Rollins, R. P. ^[19]; Roodman, A. ^[40]; Ross, A. J. ^[41]; Rykoff, E. S. ^[42]; Sanchez, C. ^[43]; Secco, L. F. ^[31]; Sevilla-Noarbe, I. ^[44]; Sheldon, E. ^[45]; Shin, T. ^[13]; Troxel, M. A. ^[17]; Tutusaus, I. ^[46]; Yanny, B. ^[22]; Yin, B. ^[17]; Zhang, Y. ^[47]; Zuntz, J. ^[48]; Aguena, M. ^[49]; Andrade-Oliveira, F. ^[50]; Bacon, D. ^[41]; Brooks, D. ^[5]; Burke, D. L. ^[40]; Carretero, J.; Carretero, ]J. ^[51]; Castander, F. J. ^[46]; da Costa, L. N. ^[52]; da Silva Pereira, M. E. ^[53]; Davis, T. M. ^[54]; De Vicente, J. ^[44]; Flaugher, B. ^[22]; Frieman, J. ^[55]; García-Bellido, J. ^[56]; Gaztanaga, E. ^[57]; Gutierrez, G. ^[22]; Hinton, S. R. ^[54]; Hollowood, D. L. ^[28]; James, D. J. ^[58]; Kuehn, K. ^[59]; Lahav, O. ^[5]; Lee, S. ^[30]; Marshall, J. L. ^[60]; Mena-Fernández, J. ^[24]; Miquel, R. ^[61]; Mohr, J. J. ^[62]; Ogando, R. L.C. ^[63]; Plazas Malagón, A. A. ^[40]; Porredon, A. ^[64]; Samuroff, S. ^[65]; Sanchez, E. ^[44]; Smith, M. ^[66]; Soares-Santos, M. ^[50]; Suchyta, E. ^[67]; Swanson, M. E.C. ^[68]; Tucker, D. L. ^[22]; Vikram, V. ^[69]; Weaverdyck, N. ^[70]; Wiseman, P. ^[71]; Yamamoto, M. ^[72]

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1. Argonne; Chicago U., KICP
2. Chicago U., Astron. Astrophys. Ctr.; Chicago U., KICP
3. Utah U.
4. U. Geneva (main)
5. University Coll. London
6. ICE, Bellaterra
7. Sao Paulo, IFT; U. Michigan, Ann Arbor
8. Princeton U., Astrophys. Sci. Dept.
9. Wisconsin U., Madison
10. Argonne (main)
11. UPenn, Philadelphia
12. Northeastern U.
13. Carnegie Mellon U.
14. IAC, La Laguna; Laguna U., Tenerife; LIneA, Rio de Janeiro
15. Illinois U., Urbana, Astron. Dept.; Illinois U., Urbana (main)
16. William-Mary Coll.
17. Duke U.
18. NASA, Goddard
19. Jodrell Bank
20. KIPAC, Menlo Park
21. Stanford U.
22. Fermilab
23. Chicago U., KICP; Fermilab; Chicago U., Astron. Astrophys. Ctr.
24. LPSC, Grenoble
25. Fermilab; Chicago U., Astron. Astrophys. Ctr.; Chicago U., KICP
26. Caltech; Caltech, JPL
27. Waterloo U.
28. UC, Santa Cruz
29. Arizona U., Astron. Dept. - Steward Observ.
30. Caltech, JPL
31. Chicago U., KICP
32. LMU Munich (main)
33. Illinois U., Urbana (main); Illinois U., Urbana, Astron. Dept.
34. Arizona U.
35. LPNHE, Paris
36. Ohio State U., CCAPP; Ohio State U.
37. Campinas State U.
38. Pennsylvania U., Dept. Math.
39. Genoa U.; INFN, Genoa
40. KIPAC, Menlo Park; SLAC
41. Portsmouth U., ICG
42. SLAC; KIPAC, Menlo Park
43. BIST, Barcelona
44. Madrid, CIEMAT; Madrid, Escuela Tec. Sup. Ing. Ind.
45. Brookhaven
46. Barcelona, IEEC; ICE, Bellaterra
47. NOAO, Tucson
48. Edinburgh U., Inst. Astron.
49. Trieste Observ.; LIneA, Rio de Janeiro
50. Zurich U.
51. Barcelona, IFAE
52. LIneA, Rio de Janeiro
53. Hamburg Observ.
54. Queensland U.
55. Chicago U., Astron. Astrophys. Ctr.; Fermilab; Chicago U., KICP
56. Madrid, IFT
57. Barcelona, IEEC; Portsmouth U., ICG; ICE, Bellaterra
58. Harvard-Smithsonian Ctr. Astrophys.
59. Australian Astron. Observ.; Lowell Observ.
60. Texas A-M
61. ICREA, Barcelona; Barcelona, Autonoma U.; Barcelona, IFAE
62. Munich U., ASC
63. Rio de Janeiro Observ.
64. Madrid, CIEMAT; Madrid, Escuela Tec. Sup. Ing. Ind.; Ruhr U., Bochum
65. Northeastern U.; Barcelona, IFAE
66. Lancaster U.
67. ORNL, Oak Ridge (main)
68. Illinois U., Urbana (main)
69. Unlisted
70. UC, Berkeley, Astron. Dept.; LBL, Berkeley
71. Southampton U.
72. Princeton U., Astrophys. Sci. Dept.; Duke U.

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 $$\sim 100 \; {\rm kpc}$$ to $$\sim 100 \; {\rm Mpc}$$, 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 $$\log M_\star/M_\odot \sim 9.6$$ to $$\sim 11.5$$; 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 $$\log M_\star (M_h) = \log(εM_1) + f\left[ \log\left( M_h / M_1 \right) \right] - f(0)$$, with $$f(x) \equiv -\log(10^{αx}+1) + δ[\log(1+\exp(x))]^γ/ [1+\exp(10^{-x})]$$, to be $$\log M_1 = 11.506^{+0.325}_{-0.404}$$, $$\log ε= -1.632^{+0.306}_{-0.181}$$, $$α= -1.638^{+0.108}_{-0.099}$$, $$γ= 0.596^{+0.251}_{-0.210}$$ and $$δ= 3.810^{+2.045}_{-1.811}$$. The inferred average satellite fraction is within $$\sim 5-35\%$$ 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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States); Arizona U.; Arizona U., Astron. Dept. - Steward Observ.; Australian Astron. Observ.; BIST, Barcelona; Barcelona, Autonoma U.; Barcelona, IEEC; Barcelona, IFAE; Brookhaven National Laboratory (BNL), Upton, NY (United States); Caltech; Caltech, JPL; Campinas State U.; Carnegie Mellon U.; Chicago U., Astron. Astrophys. Ctr.; Chicago U., KICP; Duke U.; Edinburgh U., Inst. Astron.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Genoa U.; Hamburg Observ.; Harvard-Smithsonian Ctr. Astrophys.; IAC, La Laguna; ICE, Bellaterra; ICREA, Barcelona; INFN, Genoa; Illinois U., Urbana (main); Illinois U., Urbana, Astron. Dept.; Jodrell Bank; LIneA, Rio de Janeiro; LMU Munich (main); LPNHE, Paris; LPSC, Grenoble; Laguna U., Tenerife; Lancaster U.; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lowell Observ.; Madrid, CIEMAT; Madrid, Escuela Tec. Sup. Ing. Ind.; Madrid, IFT; Munich U., ASC; NASA, Goddard; NOAO, Tucson; Northeastern U.; Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Ohio State U.; Ohio State U., CCAPP; Pennsylvania U., Dept. Math.; Portsmouth U., ICG; Princeton U., Astrophys. Sci. Dept.; Queensland U.; Rio de Janeiro Observ.; Ruhr U., Bochum; SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Sao Paulo, IFT; Southampton U.; Stanford U.; Texas A-M; Trieste Observ.; U. Geneva (main); U. Michigan, Ann Arbor; UC, Berkeley, Astron. Dept.; UC, Santa Cruz; UPenn, Philadelphia; University Coll. London; Unlisted; Utah U.; Waterloo U.; William-Mary Coll.; Wisconsin U., Madison; Zurich U.
• Sponsoring Organization: US Department of Energy
• Grant/Contract Number: 89243024CSC000002
• OSTI ID: 2572032
• Report Number(s): DES-2023-0808; FERMILAB-PUB-25-0419-PPD; oai:inspirehep.net:2939554; arXiv:2506.22367
• Journal Information: Open J.Astrophys., Journal Name: Open J.Astrophys. Vol. 9
• Country of Publication: United States
• Language: English