EQUIVALENT WIDTH'S
COMPUTATION FOR SPECTRAL SURVEYS

Page updated the 2011-11-04


-------

Context:

In spectroscopy studies, equivalent width (EW) is a well known tool for following Be star's activity. As I'm involved in scientific survey on Be stars, I wondered to know how my EW's computations were accurated and why there are so much difference between our measurements. Which factors may impact on EW's computation? How can we drive surveys with EW compution following?


-------

Discussion's steps:

EW's computation method is discussed in two steps:
  1. Comparative EW's computation with several softs.
  2. OHP 2010 meeting's convention about EW's computation.