Involved people at OAB: Clementini, Montegriffo.
We are developing a number of
software tools which allow: (i) to achieve the identification of
variable objects (VARFIND), (ii) to perform period searches and studies
of single and multi-mode periodicities (GRATIS : GRAphycal Analyzer TIme
Series) of the variables (this code has proven to be a very efficient and
powerful tool during the study of the LMC variables, and in the
identification of the double mode pulsation of CU Comae),
and (iii) to catalogue and
access interactively photometric and radial
velocity data as well as periods, epochs, amplitudes, metallicities,
values, etc., and bibliographic references for a large number of
RR Lyrae in the Galaxy and in other Local Group systems (VARCAT).
A number of facilities are implemented in VARCAT which allow to easily
display quantities such as period-metallicity and/or period-amplitude
relations, etc. The catalogue is directly interfaced to GRATIS and
we plan to keep it updated with the growing body of observational data
which are becoming available for RR Lyraes outside the Galaxy, and to make
it soon available on web.