Cosmic Shear from STIS Pure Parallels: Analysis

H. Haemmerle; J. -M. Miralles; P. Schneider; T. Erben; R. A. E. Fosbury; W. Freudling; N. Pirzkal; S. D. M. White

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Cosmic Shear from STIS Pure Parallels: Analysis

H. Haemmerle·J. -M. Miralles·P. Schneider·T. Erben·R. A. E. Fosbury·W. Freudling·N. Pirzkal·S. D. M. White

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Abstract

The measurement of cosmic shear requires deep imaging with high image quality on many lines of sight to sample the statistics of large-scale structure. The expected distortion of galaxy images by cosmic shear on the STIS angular scale is a few percent, therefore the PSF anisotropy has to be understood and controlled to an accuracy better than 1%. In this poster we present the analysis of the PSF of STIS and a preliminary cosmic shear measurement using archival data from the STIS pure parallel program to show that the STIS camera on-board HST is well suited for our project. The data reduction and catalog production are described in an accompanying paper (astro-ph/0102330).

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H. Haemmerle, J. -M. Miralles, P. Schneider, T. Erben, R. A. E. Fosbury, W. Freudling, N. Pirzkal, S. D. M. White. 2001-10-09. Cosmic Shear from STIS Pure Parallels: Analysis. https://arxiv.org/abs/astro-ph/0109508

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