Mass Modeling of Abell 1689 Advanced Camera for Surveys Observations with a Perturbed Navarro‐Frenk‐White Model

Autor:	Richard L. White, G. D. Illingworth, Myungkook J. Jee, K. Zekser, Dan Coe, Holland C. Ford, Marc Postman, John P. Blakeslee, Narciso Benítez, T. J. Broadhurst
Rok vydání:	2006
Předmět:	Physics Dark matter Astronomy Astronomy and Astrophysics Astrophysics Advanced Camera for Surveys Cosmology Galaxy law.invention Lens (optics) Gravitational lens Space and Planetary Science law Halo Galaxy cluster
Zdroj:	The Astrophysical Journal. 640:639-661
ISSN:	1538-4357 0004-637X
Popis:	The combined resolution and sensitivity of the Advanced Camera for Surveys deep imaging provides the capability of high-accuracy lens modeling of Abell 1689. Originally based on the technique of Broadhurst and coworkers, our software is designed to provide a precise and efficient method of modeling cluster lenses without assumptions relating the large-scale cluster dark matter to the light. Abell 1689 is robustly modeled using a freely varying cluster halo component consisting of an NFW profile, shapelets (Refregier), and a mass sheet, as well as a galaxy component based on the light. Another improvement over previous modeling techniques is the application ofmagnification-correctedimagemagnitudeconstraints.Themasswithinthe � 50 00 Einsteinradiuswasfoundtobe 2:04 þ0:03
Databáze:	OpenAIRE
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