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Journal article
Shape, colour, and distance in weak gravitational flexion
Monthly notices of the Royal Astronomical Society, v 501(3), pp 4103-4109
01 Mar 2021
Abstract
Canonically, elliptical galaxies might be expected to have a perfect rotational symmetry, making them ideal targets for flexion studies - however, this assumption has not been tested. We have undertaken an analysis of low- and high-redshift galaxy catalogues of known morphological type with a new gravitational lensing code, Lenser. Using colour measurements in the u - r bands and fit Sersic index values, objects with characteristics consistent with early-type galaxies are found to have a lower intrinsic scatter in flexion signal than late-type galaxies. We find this measured flexion noise can be reduced by more than a factor of two at both low and high redshift.
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Details
- Title
- Shape, colour, and distance in weak gravitational flexion
- Creators
- Joseph M. Fabritius - Drexel UniversityEvan J. Arena - Drexel UniversityDavid M. Goldberg - Drexel University
- Publication Details
- Monthly notices of the Royal Astronomical Society, v 501(3), pp 4103-4109
- Publisher
- Oxford Univ Press
- Number of pages
- 7
- Grant note
- Max Planck Society; Foundation CELLEX Higher Education Funding Council for England for England National Science Foundation; National Science Foundation (NSF) U.S. Department of Energy; United States Department of Energy (DOE) National Aeronautics and Space Administration; National Aeronautics & Space Administration (NASA) NAS5-26555 / Association of Universities for Research in Astronomy, Inc., under NASA Alfred P. Sloan Foundation Japanese Monbukagakusho; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000686047600002
- Scopus ID
- 2-s2.0-85100815114
- Other Identifier
- 991019168426204721
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- Web of Science research areas
- Astronomy & Astrophysics