Cosmic Shear from STIS pure parallels: III. Analysis of Cycle 9 pure parallels

Details Cosmic Shear from STIS pure parallels: III. Analysis of Cycle 9 pure parallels Cosmic Shear from STIS pure parallels: III. Analysis of Cycle 9 pure parallels

2003-10-24

arxiv.org/abs/astro-ph/0310716v1

Astronomy and Astrophysics

Astrophysics

12 pages, 14 figures, submitted to A&A

Scientific paper

Following the detection of a cosmic shear signal at the 30'' scale using archival parallel data from the STIS CCD camera onboard HST in Haemmerle et al. (2002), we analyzed a larger data set obtained from an HST GO pure parallel program. Although this data set is considerably larger than the one analyzed previously, we do not obtain a significant detection of the cosmic shear signal. The potential causes of this null result are the multiple systematics that plague the STIS CCD data, and in particular the degradation of the CCD charge transfer efficiency after 4 years in space.

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