DULAG. A DUal and Lensed AGN candidate catalog

The number of candidates is determined by the size of the input AGN catalogs, usually limited to spectroscopically-confirmed objects. The objective of this work is to compile a larger and highly reliable catalog of GMP pair candidates extracted from the six million objects the Gaia AGN catalog, the majority of which lack spectroscopic information.

In order to ascertain the differences in the properties of GMP pair candidates compared to normal AGN, we conducted an investigation utilising samples of GMP AGN. These differences were employed to establish the optimal selecting criteria, which ultimately led to the identification of a highly reliable candidate catalog. We found significant differences in astrometry and multi-band colour distribution between normal AGN and GMP pair candidates.