CMB/kSZ and Compton-y Maps from 2500 deg² of SPT-SZ and Planck Survey Data

• Published in: The Astrophysical Journal Supplement Series
• Main Authors: Bleem, L. E., Crawford, T. M., Ansarinejad, B., Benson, B. A., Bocquet, S., Carlstrom, J. E., Chang, C. L., Chown, R., Crites, A. T., de Haan, T., Dobbs, M. A., Everett, W. B., George, E. M., Gualtieri, R., Halverson, N. W., Holder, G. P., Holzapfel, W. L., Hrubes, J. D., Knox, L., Lee, A. T., Luong-Van, D., Marrone, D. P., McMahon, J. J., Meyer, S. S., Millea, M., Mocanu, L. M., Mohr, J. J., Natoli, T., Omori, Y., Padin, S., Pryke, C., Raghunathan, S., Reichardt, C. L., Ruhl, J. E., Schaffer, K. K., Shirokoff, E., Staniszewski, Z., Stark, A. A., Vieira, J. D., Williamson, R.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: American Astronomical Society 2022
• Subjects: Cosmic background radiation; Large-scale structure of the universe; Galaxy clusters; Kavli; Lambda; South Pole; South pole
• Online Access: https://doi.org/10.3847/1538-4365/ac35e9

We present component-separated maps of the primary cosmic microwave background/kinematic Sunyaev–Zel'dovich (SZ) amplitude and the thermal SZ Compton-y parameter, created using data from the South Pole Telescope (SPT) and the Planck satellite. These maps, which cover the ∼2500 deg² of the southern sky imaged by the SPT-SZ survey, represent a significant improvement over previous such products available in this region by virtue of their higher angular resolution 1'.25 for our highest-resolution Compton-y maps) and lower noise at small angular scales. In this work we detail the construction of these maps using linear combination techniques, including our method for limiting the correlation of our lowest-noise Compton-y map products with the cosmic infrared background. We perform a range of validation tests on these data products to test our sky modeling and combination algorithms, and we find good performance in all of these tests. Recognizing the potential utility of these data products for a wide range of astrophysical and cosmological analyses, including studies of the gas properties of galaxies, groups, and clusters, we make these products publicly available at http://pole.uchicago.edu/public/data/sptsz_ymap and on the NASA/LAMBDA website. © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 February 14; revised 2021 September 20; accepted 2021 October 7; published 2022 February 3. We thank the anonymous referee for the insightful comments on this manuscript. The South Pole Telescope program is supported by the National Science Foundation (NSF) through grants PLR-1248097 and OPP-1852617. Partial support is also provided by the NSF Physics Frontier Center grant PHY- 1125897 to the Kavli Institute of Cosmological Physics at the ...