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We use public data from the South Pole Telescope (SPT) and Atacama CosmologyTelescope (ACT) to measure radial profiles of the thermal Sunyaev-Zel'dovich(tSZ) effect and dust emission around massive quiescent galaxies at$z\approx1.$ Using survey data from the Dark Energy Survey (DES) and Wide-Fieldinfrared Survey Explorer (WISE), we selected $387,627$ quiescent galaxieswithin the ACT field, with a mean stellar $\log_{10}(M_{\star}/\rm{M_{\odot}})$of $11.40$. A subset of $94,452$ galaxies, with a mean stellar$\log_{10}(M_{\star}/\rm{M_{\odot}})$ of $11.36,$ are also covered by SPT. In$0.5$ arcminute radial bins around these galaxies, we detect the tSZ profile atlevels up to $11\sigma$, and dust profile up to $20\sigma.$ Both profiles areextended, and the dust profile slope at large radii is consistent with galaxyclustering. We analyze the thermal energy and dust mass versus stellar mass viaintegration within $R=2.0$ arcminute circular apertures and fit them with aforward-modeled power-law to correct for our photometric stellar massuncertainty. At the mean log stellar mass of our overlap and wide-area samples,respectively, we extract thermal energies from the tSZ of$E_{\rm{pk}}=6.45_{-1.52}^{+1.67}\times10^{60}{\rm{ erg}}$ and$8.20_{-0.52}^{+0.52}\times10^{60}{\rm{ erg}},$ most consistent with moderateto high levels of active galactic nuclei feedback acting upon thecircumgalactic medium. Dust masses at the mean log stellar mass are$M_{\rm{d,pk}}=6.23_{-0.67}^{+0.67}\times10^{8}\rm{ M_{\odot}}$ and$6.76_{-0.56}^{+0.56}\times10^{8}\rm{ M_{\odot}},$ and we find a greater thanlinear dust-to-stellar mass relation, which indicates that the more massivegalaxies in our study retain more dust. Our work highlights currentcapabilities of stacking millimeter data around individual galaxies andpotential for future use.

Evidence of Extended Dust and Feedback around z$\approx$1 Quiescent Galaxies via Millimeter Observations