English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/139880
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

A free-form lensing grid solution for A1689 with new multiple images

AutorDiego, José María ; Broadhurst, T.; Benítez, Narciso ; Umetsu, K.; Coe, Daniel; Sendra, Irene; Izzo, L.; Covone, G.
Palabras claveDark matter
Galaxies: clusters: general
Galaxies: clusters: individual: A1689
Methods: data analysis
Fecha de publicación2015
EditorOxford University Press
CitaciónMonthly Notices of the Royal Astronomical Society 446(1): 683-704 (2015)
ResumenWe examine Abell 1689 non-parametrically, combining strongly lensed Hubble Space Telescope images and weak distortions from wider field Subaru imaging. Our model incorporates member galaxies to improve the lens solution. By adding luminosity-scaled member galaxy deflections to our smooth grid, we can derive meaningful solutions with sufficient accuracy to permit the identification of our own strongly lensed images, so our model becomes self-consistent. We identify 11 new multiply lensed system candidates and clarify previously ambiguous cases, in the deepest optical and near-infrared data to date from Hubble and Subaru. Our improved spatial resolution brings up new features not seen when the weak and strong lensing effects are used separately, including clumps and filamentary dark matter around the main halo. Our treatment means we can obtain an objective mass ratio between the cluster and galaxy components. We find a typical mass-to-light ratios of M/LB = 21 ± 14 inside the r < 1 arcmin region. Our model independence means we can objectively evaluate the competitiveness of stacking cluster lenses for defining the geometric lensing-distance-redshift relation in a model-independent way.
Versión del editorhttps://doi.org/10.1093/mnras/stu2064
Identificadoresdoi: 10.1093/mnras/stu2064
e-issn: 1365-2966
issn: 0035-8711
Aparece en las colecciones: (IFCA) Artículos
(IAA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
IAA_2015-MNRAS_446.pdf1,02 MBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.