Weak-Lensing Mass Calibration of the Atacama Cosmology Telescope Equatorial Sunyaev-Zeldovich Cluster Sample with the Canada-France-Hawaii Telescope Stripe 82 Survey

Mass calibration uncertainty is the largest systematic effect for using clustersof galaxies to constrain cosmological parameters. We present weak lensing mass measurements from the Canada-France-Hawaii Telescope Stripe 82 Survey for galaxy clusters selected through their high signal-to-noise thermal...

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Bibliographic Details
Published in:	Journal of cosmology and astroparticle physics 2016-08, Vol.2016 (8), p.13-13
Main Authors:	Battaglia, N., Leauthaud, A., Miyatake, H., Hasseleld, M., Gralla, M. B., Allison, R., Bond, J. R., Calabrese, E., Crichton, D., Devlin, M. J., Dunkley, J., Dunner, R., Erben, T., Ferrara, S., Halpern, M., Hilton, M., Hill, J.C., Hincks, A. D., Hlozek, R., Huenberger, K. M., Hughes, J. P., Kneib, J. P., Kosowsky, A., Makler, M., Marriage, T. A., Menanteau, F., Miller, L., Moodley, K., Moraes, B., Niemack, M. D., Page, L., Shan, H., Sehgal, N., Sherwin, B. D., Sievers, J. L., Sifon, C., Spergel, D. N., Staggs, S. T., Taylor, J. E., Thornton, R., van Waerbeke, L., Wollack, E. J.
Format:	Article
Language:	eng
Subjects:	Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY CALIBRATION COMPARATIVE EVALUATIONS CORRECTIONS COSMOLOGICAL CONSTANT COSMOLOGY GALAXIES GALAXY CLUSTERS GRAVITATIONAL LENSES MASS SATELLITES TELESCOPES
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Summary:	Mass calibration uncertainty is the largest systematic effect for using clustersof galaxies to constrain cosmological parameters. We present weak lensing mass measurements from the Canada-France-Hawaii Telescope Stripe 82 Survey for galaxy clusters selected through their high signal-to-noise thermal Sunyaev-Zeldovich (tSZ) signal measured with the Atacama Cosmology Telescope (ACT). For a sample of 9 ACT clusters with a tSZ signal-to-noise greater than five, the average weak lensing mass is (4.8 plus or minus 0.8) times 10 (sup 14) solar mass, consistent with the tSZ mass estimate of (4.7 plus or minus 1.0) times 10 (sup 14) solar mass, which assumes a universal pressure profile for the cluster gas. Our results are consistent with previous weak-lensing measurements of tSZ-detected clusters from the Planck satellite. When comparing our results, we estimate the Eddington bias correction for the sample intersection of Planck and weak-lensing clusters which was previously excluded.
ISSN:	1475-7508 1475-7516 1475-7516