Recurrent nova U Sco in eruption

Alerts and Monitoring of Novae
Hamish Barker
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Re: Recurrent nova U Sco in eruption

Post 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. :-(
2SPOT
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Re: Recurrent nova U Sco in eruption

Post by 2SPOT »

Others spectra taken last night and the evolution during this same night

Image
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Robin Leadbeater
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Re: Recurrent nova U Sco in eruption

Post 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
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Terry Bohlsen
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Re: Recurrent nova U Sco in eruption

Post 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
Terry Bohlsen
Armidale NSW
Australia
Hamish Barker
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Re: Recurrent nova U Sco in eruption

Post 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
Francois Teyssier
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Re: Recurrent nova U Sco in eruption

Post 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.
Forrest Sims
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Re: Recurrent nova U Sco in eruption

Post 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
Attachments
usco_3 nights of flux calibrated spectrum.png
Hamish Barker
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Re: Recurrent nova U Sco in eruption

Post by Hamish Barker »

Nice work woody!
Joan Guarro Flo
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Re: Recurrent nova U Sco in eruption

Post 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.
Attachments
_U SCO 1.png
_U SCO 1.png (15 KiB) Viewed 3453 times
_U SCO 2.png
_U SCO 2.png (32.13 KiB) Viewed 3453 times
_U SCO 3.png
_U SCO 3.png (14.72 KiB) Viewed 3453 times
Robin Leadbeater
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Re: Recurrent nova U Sco in eruption

Post by Robin Leadbeater »

Impressive to get this detail at high resolution and mag 10
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