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Extra info for 2005: Past Meets Present in Astronomy And Astrophysics: Proceedings of the 15th Portuguese National Meeting
85] Though statistics are poor with such small numbers, and prevent us from drawing any firm conclusions, some trends do come up: as expected, EL galaxies dominate the field sample, as opposed to N galaxies in clusters; K + A s are more a b u n d a n t in intermediate-z clusters relatively to the field likely due t o environment, if we d o n ' t consider t h e case of CL2249-3958 which, as already stated, is a particular system with atypical characteristics. References 1. Balogh, M. , S. , Yee, H.
31 32 2. 1. Using the Solar spectrum Our main purpose is to test equivalent width measurements. We will compare the calculations from DAOSPEC with the hard "hand made" measurements obtained using the IRAF a routine "splot" within the "echelle" package. We are also concerned about the reaction of DAOSPEC to different types of spectra. Therefore we will test the reaction of this code for spectra with different rates of noise and instrumental resolutions. The Sun is used as our object of study. For this purpose we used the Kurucz Solar Atlas and produced from it several spectra with different rates of artificial noise and resolution.
A total of 44 stars were chosen from this stellar library in order to cover the temperature/gravity parameter space as much as possible without being degenerate. 63 stellar features were then identified and the EW measured, for each star of the database. The synthesis was performed for 44 galaxies in the CL0048-2942 field of view (19 belonging to the cluster), 45 galaxies in the CL2245-3954 area (13 belonging to the cluster) and 51 galaxies in the direction of CL2249- 49 3958 (10 being cluster members).