Quality assessment and validation of the results are performed by crossmatching with
catalogues of known RR Lyrae and Cepheid
stars from other surveys (OGLE, Catalina, Linear, catalogues of variable stars in
globular clusters and dwarf spheroidal galaxies).
Verification is done by crossmatching with catalogues of known RR Lyrae stars and
stars and comparing source attributes computed by SOS Cep&RRL with those
published by OGLE in particular.
Taking advantage of the comparison between properties of
RR Lyrae and Cepheid variable candidates derived by the SOS pipeline and those of
known objects in the literature, we operated a selection of the candidates that
led to the final published catalogue. More in detail, from the original 639 828
RR Lyrae and 72 455 Cepheid candidates, 140 784 and 9 575 objects passed this