Download 2005: Past Meets Present in Astronomy And Astrophysics: by Jose Afonso, Nuno Santos, Andre Moitinho, Rui Agostinho PDF

By Jose Afonso, Nuno Santos, Andre Moitinho, Rui Agostinho

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Read or Download 2005: Past Meets Present in Astronomy And Astrophysics: Proceedings of the 15th Portuguese National Meeting PDF

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Additional resources for 2005: Past Meets Present in Astronomy And Astrophysics: Proceedings of the 15th Portuguese National Meeting

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1 = I1. 0 - „°°*' * Oo

A. Aibeo, J. M. Ferreira and J. Lima, in preparation. A F I R S T S T E P FOR AUTOMATIC STELLAR P A R A M E T E R DETERMINATION S. G. S O U S A Observatorio Astronomico de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal & Centro de Astrofisica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal T h e determination of stellar parameters is essential for the study of stellar astrophysics. Spectroscopy is one of the best ways to obtain fundamental parameters of a star. In this work we are testing and developing software to work with high resolution spectra (eg.

For this purpose we used the Kurucz Solar Atlas and produced from it several spectra with different rates of artificial noise and resolution. f routine in the SYNSPEC b software of Hubeny & Lanz (1994). We measure equivalent widths of iron lines in two different regions of the visual spectrum of the sun because of the difference of the level of line population. We choose 27 in the interval [4400A-4650A] and 36 in the interval [6000A-6300A]. Note that the first interval is more line populated than the second.

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