Output line & band measurements?

[jradavenport]

The IDL Hammer version returned a table of equivalent widths and band measurements, especially Balmer series and TiO values (particularly useful for low-mass star work, and computing zeta). Any hope of getting this functionality back into PyHammer?

[aurorayk]

We can very easily have PyHammer write the spectral indices we calculate for each spectrum for metallicity/spectral type determination to a table. We don't compute EWs, just spectral indices, so doing EWs would be a bit more work, but possible if that were something that would improve the code. Let me know if the spectral indices would be OK or if you are really looking for equivalent widths, and I will work on implementing that!

[jradavenport]

Having the option to save all the indices you're already computing would be a helpful (verbose) output!

I would argue there is value in providing the same features the original Hammer produced, at least for the K and M dwarfs. The EW and Errors are computed here for IDL Hammer

[jbochanski]

I think preserving the original EW measurements would be a good idea since that would make comparisons to previous works really straightforward.

On Tue, Oct 24, 2017 at 12:45 PM James Davenport ***@***.***> wrote: Having the option to save all the indices you're already computing would be a helpful (verbose) output! I would argue there is value in providing the same features the original Hammer produced, at least for the K and M dwarfs. The EW and Errors are computed here <https://github.com/jradavenport/TheHammer/blob/master/code/ew.pro> for IDL Hammer — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#20 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABIK6gRu9jXc0ZASknkijuDfh9cvGd2Jks5svhQNgaJpZM4QDOSu> .

-- John Bochanski Director of Computer Science Assistant Professor of Physics Rider University johnbochanski.com ~~~~~~~~~~~~~~ *Follow CLAS on social media:* https://www.facebook.com/riderclas/ <https://www.facebook.com/riderclaes/> https://twitter.com/RiderCLAS https://www.instagram.com/riderclas/

[aurorayk]

Awesome! Thanks for the feedback!

Ok so I think a quick first step would be to save the spectral indices we calculate to a table-- I will start working on that now.

Then I think we could make an option in the input GUI to calculate EWs if the user wants that as an output-- this will take a bit more time but we can definitely do it!