14–16 Apr 2025
Europe/Lisbon timezone

Study of the physical properties of strong gravitational lens candidates in the sub-mm through SED analysis

16 Apr 2025, 12:15
15m
Auditorium C.1

Auditorium C.1

Department of Physics (University of Coimbra)

Speaker

JUAN ALBERTO CANO DIEZ

Description

Submillimeter galaxies (SMGs) are a population of high-redshift, dust-obscured galaxies with high star-formation rates and a steep number of counts, making them crucial for understanding galaxy formation and evolution. This study investigates the physical properties of 68 candidate gravitationally lensed SMGs at $z>1.2$ from the Herschel-ATLAS catalog, along with their associated lenses at lower redshifts. Lens selection is performed based on the close proximity of the H-ATLAS sources to elliptical galaxies in the AllWISE catalog, identified using a WISE color-color diagram classification. Our primary objective is to examine the potential magnification of the background SMGs and to evaluate the effectiveness of this selection method for identifying new lenses. To achieve this, we perform SED fitting on the ultraviolet to far-infrared emission of the candidates using the CIGALE fitting code, analyzing the lens and the SMG components separately to derive statistical conclusions about their properties

Author

Co-authors

Mr Joaquín González-Nuevo (University of Oviedo) Mrs Laura Bonavera (University of Oviedo) Mr Marcos M. Cueli (Scuola Internazionale Superiore di Studi Avanzati (SISSA))

Presentation materials