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Re: New transcient, perhaps a nova
Posted: Fri Sep 29, 2017 3:53 pm
by Joan Guarro Flo
Hi,
This is the evolution zone Hbeta and Fe II, from 2017 07 26 to 2017 09 28.
Cheers, Joan.
Re: New transcient, perhaps a nova
Posted: Mon Oct 02, 2017 5:31 pm
by Francois Teyssier
Very good coverage and nive animation, Joan!
The evolution of the "nova" is very impressive and atypical
Update of the light curve with the second rise from ARAS data base
http://www.astrosurf.com/aras/Aras_Data ... ct2017.htm:
- NovaSct_LC.PNG (14.28 KiB) Viewed 7078 times
Evolution of some lines during the second decline:
H alpha. At the second maximum, the emission is very weak
This is the typical behavior of the lines during an oscillation, hightlighted by Mac Lauglin: during an oscillation the spectrum tends to regain the aspect it had at the same luminosity
- novasct2017_20170915_Ha.png (50.27 KiB) Viewed 7078 times
- novasct2017_Hb.png (57.32 KiB) Viewed 7078 times
- novasct2017_FeII5018.png (98.79 KiB) Viewed 7078 times
- novasct2017_HeI.png (115.71 KiB) Viewed 7078 times
- novasct2017_HeI6678.png (131.53 KiB) Viewed 7078 times
H beta profile from the mast spectrum obtained by Paolo:
Interesting to see the similarity between the two main absorptions vr ~-430 and +460 km/s
- asassn-17hx_20170930_732_Hb.png (17.91 KiB) Viewed 7078 times
Very impressive!
Keep on the good work on this very peculiar event until the conjonction
François
Re: New transcient, perhaps a nova
Posted: Wed Oct 04, 2017 6:16 pm
by Francisco Campos
Outstanding coverage of this "nova". Last news show that the nova is again rebrightening and is going into his third maximum.
Greetings
Fran
Re: New transcient, perhaps a nova
Posted: Wed Oct 04, 2017 9:49 pm
by Francois Teyssier
Thank you for the information, Fran
A fantastic object!
- NovaSct_LC1.PNG (13.85 KiB) Viewed 7044 times
Uptade of the lightcurve and last spectra (Terry, Joan, Paolo, Umberto, Fran)
All the best,
François
PS: I can't access to the photometry of this nova from VStar. Any idea?
Re: New transcient, perhaps a nova
Posted: Wed Oct 04, 2017 9:51 pm
by umberto sollecchia
Bonsoir, la nouvelle a de nouveau gagné 1 grandeur. Afin d'évaluer la variation significative, placer le profil de ce soir et une comparaison avec le jour 02-10-2017.
Umberto
- asassn-17hx_20171004_773_Umberto Sollecchia.png (24.05 KiB) Viewed 7044 times
- asassn-17hx -Comparison- Umberto Sollecchia.png (34.18 KiB) Viewed 7044 times
Re: New transcient, perhaps a nova
Posted: Wed Oct 04, 2017 10:05 pm
by Francois Teyssier
That's great, Umberto!
François
(Currently on R Aqr)
Re: New transcient, perhaps a nova
Posted: Fri Oct 06, 2017 3:45 pm
by umberto sollecchia
Bonsoir du tout, la danse de la nouvelle continue. Place le profil du jour 05-10-2017 et une comparaison avec le jour 04-10-2017.
Umberto
- asassn-17hx_20171005_740_Umberto Sollecchia.png (23.49 KiB) Viewed 7016 times
- asassn-17hx - Comparison -Umberto Sollecchia.png (33.58 KiB) Viewed 7016 times
Re: New transcient, perhaps a nova
Posted: Fri Oct 06, 2017 11:34 pm
by James Foster
Here is my last spectra of Asassn-17hx from my high altitude site:
Will try to shoot this with the LihiresIII if I can master it before this nova gets too low.
Probably will not shoot it again from dark sky site until its too low to shoot (Nov17 new moon).
James
Re: New transcient, perhaps a nova
Posted: Thu Oct 12, 2017 11:24 am
by umberto sollecchia
onne journée à tous, placez le profil de la nouvelle observé le 11-10-2017.
Umberto
- asassn-17hx_20171011_744_Umberto Sollecchia.png (21.81 KiB) Viewed 6987 times
Re: New transcient, perhaps a nova
Posted: Thu Oct 12, 2017 12:07 pm
by Joan Guarro Flo
Hi,
As it is seen in the graph of the Umberto. Halpha of the New Sct 2017, has been back in the maximum issue
Regards, Joan.