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OATS-DAUT SEMINAR
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Speaker: Kutluay YÜCE (Ankara Univ., Turkey)
Title: From stellar spectra to chemical abundance analysis
Date: Wednesday, April 14th, 2010
Time: 12:00
Venue: Villa Bazzoni
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Abstract:
The most important information in Stellar Astrophysics is obtained
from the spectral analysis of the stars. A detailed spectral analysis
performed on high quality spectra allows us to obtain the atmosphere
parameters of a star, effective temperature and surface gravity, as
well as its chemical composition. These results can then be used in
stellar evolution studies. Recently, we have performed the abundance
analysis of some stars from spectra observed at a resolving power of R
= 40000, obtained with the Coudé Echelle Spectrograph of the 1.50-m
telescope of the TÜBİTAK National Observatory near Antalya in the
south of Turkey. We optimized the S/N of the 1-d spectra by taking
multiple bias, flat, and stellar exposures. Here I will show how the
chemical abundance analysis was performed for a few individual stars
using the equivalent width method, and I will discuss the results.
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contact: Fiorella Castelli (OATS)