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ACT Sunyaev-Zel'dovich Clusters

Total number of clusters = 23

Catalog of 23 galaxy clusters detected by the Sunyaev-Zel'dovich (SZ) effect in 455 square degrees of sky surveyed by ACT during 2008 at 148 GHz. The catalog gives the cluster names, positions, redshifts, signal-to-noise, and measured SZ signal. SZ and optical images of each cluster are also included.

The measured SZ signal is given as a central temperature decrement, both before and after deconvolving with the ACT beam, and as a central Compton y parameter (δ T0, δ T′0 and δ y0 respectively). A corresponding estimate of the core radius is also given (θcore). For the high-significance clusters, a measured SZ temperature decrement within 0.5' is given as well (yTCMB). Redshifts in the table are either photometric (if only 2 digits are presented after the decimal) or spectroscopic (3 digits).

Details on cluster detection and central Compton y values for the full sample can be found in Marriage et al. (2010). Optical follow-up observations are described in Menanteau et al. (2010). Details on cluster detection, fixed-aperture integrated Compton y values, and cosmological interpretation for the high-significance sample are presented in Sehgal et al. (2010).

Name R.A. (degrees) Dec. (degrees) SNR z Alt ID
ACT-CL J0102-4915 15.7208 - 49.2553 9.0 0.75 New
ACT-CL J0145-5301 26.2458 - 53.0169 4.0 0.118 A2941
ACT-CL J0215-5212 33.8250 - 52.2083 4.9 0.51 New
ACT-CL J0217-5245 34.2958 - 52.7556 4.1 0.343 RXC J0217.2-5244
ACT-CL J0232-5257 38.1875 - 52.9522 4.7 0.59 New
ACT-CL J0235-5121 38.9667 - 51.3544 6.2 0.43 New
ACT-CL J0237-4939 39.2625 - 49.6575 3.9 0.40 New
ACT-CL J0245-5302 41.3875 - 53.0344 9.1 0.300 AS0295
ACT-CL J0304-4921 46.0625 - 49.3617 3.9 0.47 New
ACT-CL J0330-5227 52.7250 - 52.4678 6.1 0.440 A3128(NE)
ACT-CL J0346-5438 56.7125 - 54.6483 4.4 0.55 New
ACT-CL J0438-5419 69.5792 - 54.3181 8.0 0.54 New
ACT-CL J0509-5341 77.3375 - 53.7014 4.8 0.461 SPT-CL 0509-5342
ACT-CL J0516-5430 79.1250 - 54.5083 4.6 0.294 AS0520/SPT-CL 0517-5430
ACT-CL J0528-5259 82.0125 - 52.9981 3.1 0.768 SPT-CL 0528-5300
ACT-CL J0546-5345 86.6542 - 53.7589 6.5 1.066 SPT-CL 0547-5345
ACT-CL J0559-5249 89.9292 - 52.8203 5.1 0.611 SPT-CL J0559-5249
ACT-CL J0616-5227 94.1500 - 52.4597 5.9 0.71 New
ACT-CL J0638-5358 99.6917 - 53.9792 10.0 0.222 AS0592
ACT-CL J0641-4949 100.3958 - 49.8089 4.7 0.146 A3402
ACT-CL J0645-5413 101.3750 - 54.2275 7.1 0.167 A3404
ACT-CL J0658-5557 104.6250 - 55.9511 11.5 0.296 1E0657-56 (Bullet)
ACT-CL J0707-5522 106.8042 - 55.3800 3.3 0.43 New
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