I'm looking for a way to access the data used to produce these plots for instance. These plots show the spectrum of various Wolf-Rayet stars. I found a few websites where you have some informations on those stars here for instance, but I'm not able to find and download a file containing the spectrum data of the stars.

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    $\begingroup$ Depending on the number of digits precision you need, you could take the graphs and feed them to DataThief datathief.org $\endgroup$ – Carl Witthoft Dec 20 '19 at 15:28
  • $\begingroup$ Thank you @CarlWitthoft, I did not know this tool. That can be very useful. $\endgroup$ – Laurent Hayez Dec 21 '19 at 6:49

If you know how to reduce raw spectrum data, you may look at the official archives of big observatories (ESO, MAST, CADC). But a quicker and much easier way could be to use the following portal:


Typing the name of some Wolf Rayet stars will lead you to reduced data and thus spectra.

  • $\begingroup$ Thank you, the eso website is a very nice reference that I did not know! $\endgroup$ – Laurent Hayez Dec 21 '19 at 6:48

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