Bibcode
Kornoelje, K.; Bleem, L. E.; Rykoff, E. S.; Abbott, T. M. C.; Ade, P. A. R.; Aguena, M.; Alves, O.; Anderson, A. J.; Andrade-Oliveira, F.; Ansarinejad, B.; Archipley, M.; Ashby, M. L. N.; Austermann, J. E.; Bacon, D.; Balkenhol, L.; Bayliss, Matthew B.; Beall, J. A.; Benabed, K.; Bender, A. N.; Benson, B. A.; Bianchini, F.; Bocquet, S.; Bouchet, F. R.; Brooks, D.; Burke, D. L.; Calzadilla, M.; Campitiello, M. G.; Camphuis, E.; Carlstrom, J. E.; Carnero Rosell, A.; Carretero, J.; Chang, C. L.; Chaubal, P.; Chiang, H. C.; Chichura, P. M.; Chokshi, A.; Chou, T.-L.; Citron, R.; Coerver, A.; Moran, C. Corbett; Costanzi, M.; Crawford, T. M.; Crites, A. T.; da Costa, L. N.; Daley, C.; de Haan, T.; De Vicente, J.; Desai, S.; Dibert, K. R.; Dobbs, M. A.; Doel, P.; Doohan, M.; Doussot, A.; Dutcher, D.; Everett, W.; Everett, S.; Feng, C.; Ferguson, K. R.; Mena-Fernández, J.; Ferrero, I.; Fichman, K.; Flaugher, B.; Floyd, B.; Foster, A.; Friedel, D.; Frieman, J.; Galli, S.; Gallicchio, J.; Gambrel, A. E.; García-Bellido, J.; Gardner, R. W.; Gassis, R.; Gatti, M.; Ge, F.; George, E. M.; Giannini, G.; Goeckner-Wald, N.; Grandis, S.; Gruen, D.; Gruendl, R. A.; Gualtieri, R.; Guidi, F.; Guns, S.; Gupta, N.; Gutierrez, G.; Halverson, N. W.; Hinton, S. R.; Hivon, E.; Holder, G. P.; Hollowood, D. L.; Holzapfel, W. L.; Honscheid, K.; Hood, J. C.; Hrubes, J. D.; Hryciuk, A.; Huang, N.; Hubmayr, J.; Irwin, K. D.; James, D. J.; Kéruzoré, F. et al.
Bibliographical reference
The Astrophysical Journal
Advertised on:
6
2026
Journal
Citations
18
Refereed citations
0
Description
We present a catalog of 500 galaxy cluster candidates in the SPT-Deep field: a 100 deg2 field that combines data from the SPT-3G and SPTpol surveys to reach noise levels of 3.0, 2.2, and 9.0 μK-arcmin at 95, 150, and 220 GHz, respectively. Candidates are selected via the thermal Sunyaev─Zel'dovich (SZ) effect with a minimum significance of ξ = 4.0, resulting in a catalog of purity ∼89%. Optical data from the Dark Energy Survey and infrared data from the Spitzer Space Telescope are used to confirm 442 cluster candidates. The clusters span 0.12 < z ≲ 1.8 and 1.0 × 1014M⊙/h70 < M500c < 8.7 × 1014M⊙/h70. The sample's median redshift is 0.74, and the median mass is 1.7 × 1014M⊙/h70; these are the lowest median mass and highest median redshift of any SZ-selected sample to date. We assess the effect of infrared emission from cluster member galaxies on cluster selection by performing a joint fit to the infrared dust and tSZ signals by combining measurements from SPT and overlapping submillimeter data from Herschel/SPIRE. We find that at high redshift (z > 1), the tSZ signal is reduced by 17.9−3.2+3.8% ( 3.8−0.7+0.9% ) at 150 GHz (95 GHz) due to dust contamination. We repeat our cluster finding method on dust-nulled SPT maps and find the resulting catalog is consistent with the nominal SPT-Deep catalog, suggesting dust contamination does not significantly impact the SPT-Deep selection function; we attribute this lack of bias to the inclusion of the SPT 220 GHz band.