CMB/kSZ and Compton-y Maps from 2500 deg 2 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., Haan, T. de, 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.
• Language: unknown
• Published: 2023
• Subjects: 79 ASTRONOMY AND ASTROPHYSICS; Lambda; South Pole; South pole
• Online Access: http://www.osti.gov/servlets/purl/1923892; https://www.osti.gov/biblio/1923892; 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-<jats:italic>y</jats:italic> parameter, created using data from the South Pole Telescope (SPT) and the Planck satellite. These maps, which cover the ~2500 deg<jats:sup>2</jats:sup> 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 (<jats:inline-formula> <jats:tex-math> <?CDATA $1\buildrel{\,\prime}\over{.} 25$?> </jats:tex-math> 1 .' 25 <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjsac35e9ieqn1.gif" xlink:type="simple" /> </jats:inline-formula> for our highest-resolution Compton-<jats:italic>y</jats:italic> 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-<jats:italic>y</jats:italic> 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 <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://pole.uchicago.edu/public/data/sptsz_ymap" xlink:type="simple">http://pole.uchicago.edu/public/data/sptsz_ymap</jats:ext-link> and on the NASA/LAMBDA website.