Searching for s-Process-Enhanced Metal-Poor Stars
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
19/10/2012
19/10/2012
2009
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| Resumo |
We present preliminary results for the estimation of barium [Ba/Fe], and strontium [Sr/Fe], abundances ratios using medium-resolution spectra (1-2 angstrom). We established a calibration between the abundance ratios and line indices for Ba and Sr, using multiple regression and artificial neural network techniques. A comparison between the two techniques (showing the advantage of the latter), as well as a discussion of future work, is presented. FAPESP CNPq Capes US National Science Foundation (NSF)[AST 04-06784] US National Science Foundation (NSF)[AST 07-07776] Physics Frontier Center/Joint Institute for Nuclear Astrophysics (JINA) [PHY 02-16783] [PHY 08-22648] |
| Identificador |
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA, v.26, n.3, p.335-338, 2009 1323-3580 http://producao.usp.br/handle/BDPI/27136 10.1071/AS08042 |
| Idioma(s) |
eng |
| Publicador |
CSIRO PUBLISHING |
| Relação |
Publications of the Astronomical Society of Australia |
| Direitos |
restrictedAccess Copyright CSIRO PUBLISHING |
| Palavras-Chave | #surveys #techniques: spectroscopic #stars: abundances #DIGITAL SKY SURVEY #STELLAR #ABUNDANCE #Astronomy & Astrophysics |
| Tipo |
article original article publishedVersion |
