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Astrophysics > Astrophysics of Galaxies

arXiv:2108.05453 (astro-ph)
[Submitted on 11 Aug 2021 (v1), last revised 27 Jul 2022 (this version, v3)]

Title:A New Estimate of Galaxy Mass-to-Light Ratios from Flexion Lensing Statistics

Authors:Joseph Michael Fabritius II, David M Goldberg
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Abstract:We perform a flexion based weak gravitational analysis of the first two Hubble Frontier Field clusters: Abell 2744 and MACS 0416. A parametric method for using projected flexion signals as a probe of cluster member mass is described in detail. The normalization and slope of a $L-\theta_E$ (as a proxy for $L-\sigma$) scaling relation in each cluster is determined using measured flexion signals. A parallel field analysis is undertaken concurrently to provide a baseline measure of method effectiveness. We find an agreement in the Faber-Jackson slope $\ell$ associated with galaxy age and morphology for both clusters, as well as theoretical distinction in the cluster normalization mass.
Subjects: Astrophysics of Galaxies (astro-ph.GA); Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Cite as: arXiv:2108.05453 [astro-ph.GA]
  (or arXiv:2108.05453v3 [astro-ph.GA] for this version)
  https://doi.org/10.48550/arXiv.2108.05453
Related DOI: https://doi.org/10.1093/mnras/stac2158

Submission history

From: Joseph Fabritius Ii [view email]
[v1] Wed, 11 Aug 2021 21:22:55 UTC (735 KB)
[v2] Tue, 30 Nov 2021 23:59:49 UTC (640 KB)
[v3] Wed, 27 Jul 2022 22:24:44 UTC (709 KB)
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