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Re: Recurrent nova U Sco in eruption

Posted: Wed Jun 08, 2022 10:15 am
by Hamish Barker
wow the three-peaked H alpha and beta features are interesting. Three blobs of ejecta (two towards us, one away)?

And yes it is still raining here. :-(

Re: Recurrent nova U Sco in eruption

Posted: Wed Jun 08, 2022 3:59 pm
by 2SPOT
Others spectra taken last night and the evolution during this same night

Image

Re: Recurrent nova U Sco in eruption

Posted: Wed Jun 08, 2022 9:49 pm
by Robin Leadbeater
Hamish Barker wrote:wow the three-peaked H alpha and beta features are interesting. Three blobs of ejecta (two towards us, one away)?

(
A reference cited in the paper given in the Atel suggests rings

Emission-line profiles from model nova shells
C. D. Gill, T. J. O'brien
Monthly Notices of the Royal Astronomical Society, Volume 307, Issue 3, August 1999
https://academic.oup.com/mnras/article/307/3/677/961689

Cheers
Robin

Re: Recurrent nova U Sco in eruption

Posted: Thu Jun 09, 2022 3:49 am
by Terry Bohlsen
I took a spectra last night with my LISA R~1500. The weather is very poor at present so follow up spectra is a bit hit and miss.
Very wide emissions at over 4000 km/s

Terry
usco_20220608_448_TBohlsen.png

Re: Recurrent nova U Sco in eruption

Posted: Thu Jun 09, 2022 1:52 pm
by Hamish Barker
the rain stopped and the clouds parted for a little while, so I got set up and managed 1x1200seconds.

could someone please post a link for where to upload in the database?
u-sco_20220609_426_Hamish Barker.png

Re: Recurrent nova U Sco in eruption

Posted: Thu Jun 09, 2022 2:16 pm
by Francois Teyssier
The database is updated:
https://aras-database.github.io/database/usco.html

Sorry for the delay - I'm on holidays in a pure "white zone"

François

Olivier: j'ai bien reçu ton deuxième envoi.

Re: Recurrent nova U Sco in eruption

Posted: Thu Jun 09, 2022 7:36 pm
by Forrest Sims
Adding another night, here is a comparison of flux calibrated spectra over three nights as the V magnitude dropped from 7.957 +/- 0.072 to 10.267+/- 0.025 taken with a LISA and processed using ISIS.

Woody

Re: Recurrent nova U Sco in eruption

Posted: Thu Jun 09, 2022 7:56 pm
by Hamish Barker
Nice work woody!

Re: Recurrent nova U Sco in eruption

Posted: Fri Jun 10, 2022 9:30 am
by Joan Guarro Flo
Hello at all,

After some bad weather days, finaly I could observe U Sco. And I hope repeat it tonight..

Cheers, Joan Guarro.

Re: Recurrent nova U Sco in eruption

Posted: Fri Jun 10, 2022 5:39 pm
by Robin Leadbeater
Impressive to get this detail at high resolution and mag 10