spectro-aras.com

Spurred on by recent participation in the OHP star party, I aimed my Lhires at some southern Be stars overdue for observation. Attached are the results. S/N is dangerously close to 100 (using ISIS' FWHM tool - which is slightly subjective) but R > 14,000 for all. The exception is v750 Ara (HD 157832) which was observed under challenging (cloud affected) conditions the previous night and is noisier than I would like.

Skies were very good last night in Perth (aside from the light pollution), but the relatively faint magnitudes of these targets nevertheless provided some challenges in getting enough signal using multiple 600s sub exposures at this resolution. After recent long term monitoring of rapidly changing targets such as zet Pup and gam2 Vel, I'm not used to long integration times. I presume this is okay for [most] Be stars?

Comments welcome.

Paul

PS - I'm not sure why my attachments are cut off at the bottom (although they do appear in full when selected). The PNGs are only 700 x 550.

Hello Paul,

I see your Lhires is giving results, no time to become cold
Nice spectra, but Y axis legend isn't correct: it's a Relative flux that is ploted as pixels have been binned to build lines profile.

Cheers from France,

Benji

Hi Benji !

I must admit I hadn't noticed the y axis. This is the default output from Gnuplot within ISIS.

Thanks for looking my friend,

Paul

Hi Paul,

Great spectras, have you submit them to BESS data base specially because these spectras in the southern hemisphere are not very present in the BESS database.

Only two low resolution spectras for HD160648 in BESS for example.

Hi Olivier,

Thanks for your comments and yes, I have registered with Bess - waiting to hear back.

Regards,
Paul