ARES + MOOG: A Practical Overview of an Equivalent Width (EW) Method to Derive Stellar Parameters
Abstract
The goal of this document is to describe the important practical aspects in the use of an Equivalent Width (EW) method for the derivation of spectroscopic stellar parameters. A general description of the fundamental steps composing any EW method is given, together with possible differences that may be found in different methods used in the literature. Then ARES+MOOG is then used as an example where each step of the method is described in detail. A special focus is given for the specific steps of this method, namely the use of a differential analysis to define the atomic data for the adopted line list, the automatic EW determinations, and the way to find the best parameters at the end of the procedure. Finally, a practical tutorial is given, where we focus on simple exercises useful to illustrate and explain the dependence of the abundances with the assumed stellar parameters. The interdependences are described and a clear procedure is given to find the "final" stellar parameters.
 Publication:

Determination of Atmospheric Parameters of B
 Pub Date:
 2014
 DOI:
 10.1007/9783319069562_26
 arXiv:
 arXiv:1407.5817
 Bibcode:
 2014dapb.book..297S
 Keywords:

 Astrophysics  Solar and Stellar Astrophysics
 EPrint:
 15 pages, 4 figures, accepted for publication as a chapter in "Determination of Atmospheric Parameters of B, A, F and G Type Stars", Springer (2014), eds. E. Niemczura, B. Smalley, W. Pych