München 2019 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 10: Astrophysics II: Galaxies and Cosmology
EP 10.4: Vortrag
Freitag, 22. März 2019, 11:45–12:00, HS 19
A quest for Galaxy Clusters and distorted images — •Matteo Maturi1, Fabio Bellagamba2,3, Mario Radovich4, Mauro Roncarelli2,3, Mauro Sereno2,3, Lauro Moscardini2,3,6, Sandro Bardelli3, Emanuella Puddu5, Sebastian Stapelberg1, and Mauricio Carrasco1 — 1ZAH/ITA, Philosophenweg 12, Heidelberg, Fermany — 2Dipartimento di Fisica e Astronomia, Alma Mater Studiorum Universit`a di Bologna, via Gobetti 93/2, I-40129 Bologna, Italy — 3INAF - Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via Gobetti 93/3, I-40129 Bologna, Italy — 4INAF - Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, Padova 35122, Italy — 5INAF - Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, Napoli 80131, Italy — 6INFN - Sezione di Bologna, Viale Berti Pichat 6/2, I-40127 Bologna, Italy
Galaxy clusters are fundamental probes to investigate the nature of dark matter, the complex phenomena involving their baryonic content and the nature of dark energy. To properly use them as a tool for cosmology, it is now of crucial importance to have large samples and a solid understanding of their observable and physical properties so as to obtain a reliable statistical sample and control over possible biases. Having this in mind, I will discuss how to detect galaxy clusters in optical photometric data sets and how to identify and characterize strong lensing features such as giant arcs in order to gain a deeper understanding of clusters.
Practical applications to the CHFTLens and KiDS-DR3 data will be presented.