Recurrent nova U Sco in eruption

[umberto sollecchia]

Caramba Joan! Exceptional spectrum.
Umberto

[Hamish Barker]

great work Joan!

hopefully the compiled spectra will give someone opportunity to investigate the time evolution of the very interesting H alpha profiles.

It is clear here tonight in nelson, new zealand (but a lot of dew), so I will take a spectrum after I finish on suspected new nova asassn-22hw, if my equipment doesn't short circuit itself.

[Joan Guarro Flo]

Robin, Umberto and Hamish,

You know that I only take advantage of the thoughts and procedures of other people, my only merit is to spend my time on it.

That is the star last night from the Piera and SMM observatories, I hope that you enjoy these graphics too.

Best wishes for all of you, Joan.

[2SPOT]

Here's the evolution of this novae on 4 days.
All spectra taken automatically from Chile (no human intervention except a text file with all targets coordinates) and soon an automatic process for the spectra process with ARP pipeline developed by Matthieu Le Lain (with spec INTI process), a great tool to do in fact automatic spectra (from acquisition to final graph).

[umberto sollecchia]

Bonjour à tous, la luminosité de la nova a baissé, elle est maintenant de magnitude 11, je l'ai donc observée avec le réseau 600l/mm toujours centré sur le H-alpha.
Umberto

usco_20220611_846_Umberto Sollecchia.png (41.64 KiB) Viewed 4048 times

[Hamish Barker]

nice spectrum umberto.

It is interesting that the h alpha profile seems to be gradually transforming to a single peak, although that peak is somewhat offset to the blue side.

[Joan Guarro Flo]

Caro Umberto,

I agree with Hamish, nice spectra ! I'll try to do it again tonight, the weather hasn't let me observe it these last two nights..

Joan.

[Francois Teyssier]

Congratulations. Great results.

After two days issues (initially due to a bad header ) the asdb is updated: https://aras-database.github.io/database/usco.html
Please check for the sumitted spectra. Perhaps I missed some of them.

Sorry for the inconvenience.

François

PS: do not forget the very important monitoring of T CrB before its next nova outburst.
and RS Oph returning to quiescence after 2021 nova outburst.

[Dubreuil Pierre]

Bonjour

Un peu en retard, U Sco le 12/06/2022 avec UVEX4 G300

_usco_f4_20220612_872_Pierre Dubreuil.png (10.04 KiB) Viewed 3906 times

Crop sur Ha

_usco_CropHa20220612_872_Pierre Dubreuil.png (8.44 KiB) Viewed 3906 times

Pierre

[Terry Bohlsen]

I have taken just 2 spectra of this as the weather hasn't been great. It has dimmed a lot and is now about mag 13. This means the S/N was low for the second spectrum. Taken with my LISA at R=1500
Terry