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Re: New transcient, perhaps a nova
Posted: Tue Aug 08, 2017 6:48 am
by James Foster
I'm late to the party on the Asassn-17hx, but while at my dark sky, high altitude site I got a LISA spectra on 26 July 2017:
All element line identifications are tentative. I'll get another shot at this in two weeks from the same site......maybe
I'll have my LhiresIII up and running by then!
James
Re: New transcient, perhaps a nova
Posted: Tue Aug 08, 2017 7:02 am
by umberto sollecchia
Bonjour à tous, placez le profil de nova observé dans la nuit du 03/08/2017.Peut-être la nova, a décidé d'aller à la retraite.
Umberto
- Profilo nova flux.png (10.21 KiB) Viewed 7222 times
Re: New transcient, perhaps a nova
Posted: Tue Aug 08, 2017 10:17 am
by Francois Teyssier
Nice Spectrum, Umberto. Decline toward nebular phase.
James: correct, unless He I. The lines are Fe II, multiplet 42
He I will appear latter when the recessing photosphere will be hotter and so hot enough to ionize He
All the best,
François
Re: New transcient, perhaps a nova
Posted: Wed Aug 09, 2017 7:25 pm
by Joan Guarro Flo
Hi,
NOVA SCT 2017, is full of surprises...
Joan.
Re: New transcient, perhaps a nova
Posted: Thu Aug 10, 2017 7:15 am
by umberto sollecchia
Caramba, quelle belle surprise Joan !....- Umberto
Re: New transcient, perhaps a nova
Posted: Thu Aug 10, 2017 1:24 pm
by Robin Leadbeater
Wow ! Even allowing for the change in continuum flux between the two dates (~1 mag at R, AAVSO data) that is a big change
Robin
Re: New transcient, perhaps a nova
Posted: Thu Aug 10, 2017 4:10 pm
by Francois Teyssier
Excellent monitoring
Congratulations to all the observers
The maximum (~30-07-2017) Echelle spectra obtained by Tim, Joan & Olivier: almost no changes during two days, from 28 th to 30th
- NovaSct2017_Hb.PNG (30.1 KiB) Viewed 7144 times
All the best,
François
Re: New transcient, perhaps a nova
Posted: Fri Aug 11, 2017 8:52 am
by Joan Guarro Flo
Hi,
Continues the rise of Hydrogen.
Joan.
Re: New transcient, perhaps a nova
Posted: Fri Aug 11, 2017 12:23 pm
by Terry Bohlsen
My effort with this nova. Big changes over 2 weeks.
- novascu2017stacked.png (48.36 KiB) Viewed 7093 times
Re: New transcient, perhaps a nova
Posted: Sat Aug 12, 2017 8:18 am
by Joan Guarro Flo
Hi,
NOVASCT2017 has moderated its growth in the Halpha and has decreased to its emission in the Hbeta.
Regards, Joan.