RRab Elements

Category: GEOS News Written by Jean-Francois Leborgne Hits: 2654

Following the exercise I made end of august by updating the elements of RR Lyr stars for the schedule of Tarot telescopes, I eventually updated the elements of 347 stars of the GEOS survey.

This is almost the whole sample of 356 stars. I just excluded a couple of stars for which detailed studies are on the way.

The result is in this file.

Most of the stars are RRab stars with the exception of 3 RRc and 2 misclassified cepheids in southern hemisphere. For some stars,new elements are not necessary: for these stars, the reference of the elements are given in the last column of the file. Again, these elements fit the recent observations made during the last decade.

They are intended to be used for predicting maxima in the near future. By the way, I made some statistics : During the last 7 years, after the start of RR Lyr program on the first Tarot telescope, the GEOS RR Lyr Survey collected 6062 CCD maxima on 356 stars.

Apart from the robotic telescopes, Tarot-Calern, Tarot-Chile and Alain Klotz' Faro, the observers who contributed are the following: N. Butterworth, L. Corp, E. Denoux, S. Dvorak, F. Fumagalli, F.-J. Hambsch, F. Hund, D. Husar, J.M. Llapasset, G. Maintz, J. Nicolas, M. Nobile, A. Paschke, P. de Ponthiere, P. Roblin, M. Serrau and F. Van Den Abbeel.

Jean-François Le Borgne