Searching for s-Process-Enhanced Metal-Poor Stars
Abstract
We present preliminary results for the estimation of barium [Ba/Fe], and strontium [Sr/Fe], abundances ratios using medium-resolution spectra (1-2 Å). 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.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- September 2009
- DOI:
- 10.1071/AS08042
- arXiv:
- arXiv:0907.0596
- Bibcode:
- 2009PASA...26..335C
- Keywords:
-
- surveys;
- techniques: spectroscopic;
- stars: abundances;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- Accepted for publication in: Publications of the Astronomical Society of Australia