Nova Scutum 2018

[David Boyd]

Spectrum of Nova Sct 2018 recorded on 30th June with a C11 + LISA spectrograph and 60min total exposure. At an altitude of only 23 deg from here, the atmospheric correction may be unreliable but the spectrum clearly shows strong H-alpha emission and P Cygni profiles on several identified lines. Ejection velocity on the absorption trough of the H-alpha line extends to -1700 km/s. According to ATel 11802 http://www.astronomerstelegram.org/?read=11802 this is an optically thick nova in the Fe-curtain stage. Other spectra can be found in the ARAS database at http://www.astrosurf.com/aras/Aras_DataBase/Novae/2018_NovaSct2018.htm

David

Attachments:

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   novasct2018_20180630_974_D.Boyd_.png
   

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   novasct2018_20180630_974_D.Boyd_.png
   

[Jeremy Shears]

That’s a great capture David, especially for something so low down in the sky. Well done!

Jeremy

[David Swan]

Thanks for pointing out this object. I have been wanting to have a look – and get a low res spectrum with my StarAnalyser – but cloud has been rolling in from the sea night after night after night!

[David Boyd]

The spectrum has changed a lot from June 30 to July 2 and then relatively little from July 2 to July 3. H-alpha emission is growing.

David

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