Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rmxac..35..307v&link_type=abstract
XII Latin American IAU Regional Meeting (Eds. G. Magris, G. Bruzual, & L. Carigi) Revista Mexicana de Astronomía y Astrofísica (
Astronomy and Astrophysics
Astronomy
Scientific paper
In this work we perform the first test of a stellar classification method (Stock & Stock 1999, RevMexAA, 35, 143), using more than 20 absorption lines in the spectral range 3800-5500Å. The sample of stars are members of the open cluster IC 2391, using high-resolution spectra from the UVES project of Paranal Observatory. We show that the absolute magnitudes M_V and intrinsic colors (B-V)_0 can be recovered within the errors predicted by the original calibration (˜ 0.4 for magnitudes and ˜ 0.03 for colors), in comparison with previous measurements from the literature. This accuracy allows us to estimate distances and to infer membership of individual stars to obtain an average distance to the cluster of 156+/-24 pc, which is in good agreement with previously reported determinations. We discuss the advantages and difficulties of using this method and how it can be improved to be used in the future for similar studies.
Garcia Javier
Sánchez Nadia
Stock Joann M.
Velásquez R. E.
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