Kavli Affiliate: Chao-Lin Kuo
| First 5 Authors: M. Archipley, A. Hryciuk, L. E. Bleem, K. Kornoelje, M. Klein
| Summary:
Context. The South Pole Telescope third-generation camera (SPT-3G) has
observed over 10,000 square degrees of sky at 95, 150, and 220 GHz (3.3, 2.0,
1.4 mm, respectively) overlapping the ongoing 14,000 square-degree Euclid Wide
Survey. The Euclid collaboration recently released Euclid Deep Field
observations in the first quick data release (Q1). Aims. With the goal of
releasing complementary millimeter-wave data and encouraging legacy science, we
performed dedicated observations of a 57-square-degree field overlapping the
Euclid Deep Field South (EDF-S). Methods. The observing time totaled 20 days
and we reached noise depths of 4.3, 3.8, and 13.2 $mu$K-arcmin at 95, 150, and
220 GHz, respectively. Results. In this work we present the temperature maps
and two catalogs constructed from these data. The emissive source catalog
contains 601 objects (334 inside EDF-S) with 54% synchrotron-dominated sources
and 46% thermal dust emission-dominated sources. The 5$sigma$ detection
thresholds are 1.7, 2.0, and 6.5 mJy in the three bands. The cluster catalog
contains 217 cluster candidates (121 inside EDF-S) with median mass
$M_{500c}=2.12 times 10^{14} M_{odot}/h_{70}$ and median redshift $z$ = 0.70,
corresponding to an order-of-magnitude improvement in cluster density over
previous tSZ-selected catalogs in this region (3.81 clusters per square
degree). Conclusions. The overlap between SPT and Euclid data will enable a
range of multiwavelength studies of the aforementioned source populations. This
work serves as the first step towards joint projects between SPT and Euclid and
provides a rich dataset containing information on galaxies, clusters, and their
environments.
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