BeSS data submission, the ALPY and ISIS

[Tony Rodda]

Hi all,

I’ve take a few spectra of Be stars and I’m in the process of comparing them with examples downloaded from BeSS in order to assess whether I’m on the right track (and confident enough to submit).

I’ve produced ISIS final (fits) image files that have been calibrated etc (using nearby ‘Miles’ B stars).  They look ‘right’.

The attached two plots below showing my (Alpy) output compared to the four plots in the BeSS Db (for this star HD42529).

Firstly everyone has zero’d in on the H alpha line detail, implying this is the only region of interest.  Is that the case?  Is it pointless submitting a complete, lower resolution spectrum?

Does ISIS produce a final ‘standardized’ file capable of submission?  In my case “_hd42529_20170112_761_TRO.fit”?

Regards

Tony

Attachments:

1. 

   HD42529-BeSS-comparison-full.png
   

2. 

   HD42529-BeSS-comparison-620-685nm.png
   

[Robin Leadbeater]

Hi Tony,

Yes ISIS can generate a BeSS compliant fits spectrum. You can test your spectra at the BeSS website without actually submitting it to see if it passes. Submitted spectra are then examined by a human for quality before being included. Note that you have to sign up and supply details of your setup  before submitting spectra.

The amateur  Be star monitoring program was originally set up for high resolution observations to study the shape of the H alpha line profile. (The LHIRES III spectrograph was designed around this requirement as at the time there was no commercial instrument capable of sufficient resolution). If you are measuring targets which are too faint for high resolution or are rarely observed or if you pick up a significant change in any target  (eg in EW or from absorption to emission or vice versa) even at low resolution, this would definitely be of interest and should be reported on ARAS/spectro-l forums and submitted to BeSS. The companion website ARAS BeAm  details which stars currently need observations.

http://arasbeam.free.fr/?lang=en

see in particular “why we observe Be stars” in the side-bar

Cheers

Robin

[Tony Rodda]

Regards

Tony

[Tony Rodda]

Thanks Robin.

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