Presentation 1 : Poster
Abundance determinations for the A2V star HD72660
DUBAJ, MONIER
We determined the abundance of several elements for the A2V star HD72660 using ultraviolet spectra from IUE archives and an archival ELODIE echelle spectrum. The simultaneous usage of optical and UV spectra allows to synthesize a large number of lines of several chemical elements. Synthesis is more reliable in the optical range where the line density is less.
Presentation 2 : Poster
Multi-wavelength SEDs and IRFM effective temperature for A andF dwarfs
DUBAJ, MONIER
The spectral energy distributions ( SEDs ) from the UV to IR have been constructed for 83 main sequence A and F stars for which ultraviolet ( IUE ), optical spectrophotometries and IR photometry are available. Their effective temperature were derived using the Infrared Flux Method ( IRFM ). Finally, the constructed SEDs have been compared to the predictions of ATLAS12 for the found IRFM temperatures, adequate surface gravities and chemical composition when available to test the ability of models to reproduce the SEDs.