SPT-3G D1: Compton-$y$ maps using data from the SPT-3G and Planck surveys
Abstract
We present thermal Sunyaev-Zel'dovich (tSZ) Compton- parameter maps constructed from two years (2019-2020) of observations with the South Pole Telescope (SPT) third-generation camera, SPT-3G, combined with data from the Planck satellite. Using a linear combination (LC) pipeline, we obtain a suite of reconstructions that explore different trade-offs between statistical sensitivity and suppression of astrophysical contaminants, including minimum-variance, CMB-deprojected, and CIB-deprojected -maps. We validate these maps through different statistical techniques such as auto- and cross-power spectra with large-scale structure tracers as well as stacking on cluster locations. These tests are used to understand the balance between noise and astrophysical foreground residuals (such as the CIB) in combination with the recovery of the tSZ signal for different maps. For example, results from stacking at the location of clusters confirm the robustness of the recovered tSZ signal over the SPT-3G survey field used in this analysis. The high-resolution and low-noise maps produced here provide an important cosmological tool for future studies, including measurements of the Compton- map power spectrum, cross-correlations with other tracers of the large-scale structure, detailed modeling of cluster pressure profiles, and study of the thermodynamic state of the baryons in the Universe.
Keywords
Cite
@article{arxiv.2602.11279,
title = {SPT-3G D1: Compton-$y$ maps using data from the SPT-3G and Planck surveys},
author = {A. S. Maniyar and F. Bianchini and W. L. K. Wu and S. Raghunathan and A. J. Anderson and B. Ansarinejad and M. Archipley and L. Balkenhol and D. R. Barron and P. S. Barry and K. Benabed and A. N. Bender and B. A. Benson and L. E. Bleem and S. Bocquet and F. R. Bouchet and L. Bryant and E. Camphuis and M. G. Campitiello and J. E. Carlstrom and J. Carron and C. L. Chang and P. Chaubal and P. M. Chichura and A. Chokshi and T. -L. Chou and A. Coerver and T. M. Crawford and C. Daley and T. de Haan and K. R. Dibert and M. A. Dobbs and M. Doohan and A. Doussot and D. Dutcher and W. Everett and C. Feng and K. R. Ferguson and N. C. Ferree and K. Fichman and A. Foster and S. Galli and A. E. Gambrel and A. K. Gao and R. W. Gardner and F. Ge and N. Goeckner-Wald and R. Gualtieri and F. Guidi and S. Guns and N. W. Halverson and E. Hivon and A. Y. Q. Ho and G. P. Holder and W. L. Holzapfel and J. C. Hood and A. Hryciuk and N. Huang and T. Jhaveri and F. Kéruzoré and A. R. Khalife and L. Knox and M. Korman and K. Kornoelje and C. -L. Kuo and K. Levy and Y. Li and A. E. Lowitz and C. Lu and G. P. Lynch and T. J. Maccarone and E. S. Martsen and F. Menanteau and M. Millea and J. Montgomery and Y. Nakato and T. Natoli and G. I. Noble and Y. Omori and A. Ouellette and Z. Pan and P. Paschos and K. A. Phadke and A. W. Pollak and K. Prabhu and W. Quan and M. Rahimi and A. Rahlin and C. L. Reichardt and M. Rouble and J. E. Ruhl and E. Schiappucci and A. C. Silva Oliveira and A. Simpson and J. A. Sobrin and A. A. Stark and J. Stephen and C. Tandoi and B. Thorne and C. Trendafilova and C. Umilta and J. D. Vieira and A. G. Vieregg and A. Vitrier and Y. Wan and N. Whitehorn and M. R. Young and J. A. Zebrowski},
journal= {arXiv preprint arXiv:2602.11279},
year = {2026}
}
Comments
18 pages, 8 figures, comments and requests for missing citations welcome!