New transcient, perhaps a nova

Information about outbursts of eruptive stars, Be activity, ...
Joan Guarro Flo
Posts: 611
Joined: Thu Nov 03, 2011 8:50 pm

Re: New transcient, perhaps a nova

Post by Joan Guarro Flo »

Hi,
This is the evolution zone Hbeta and Fe II, from 2017 07 26 to 2017 09 28.
Cheers, Joan.
Attachments
@_NOVASCT2017.gif
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Francois Teyssier
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Joined: Fri Sep 23, 2011 1:01 pm
Location: Rouen
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Re: New transcient, perhaps a nova

Post 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
NovaSct_LC.PNG (14.28 KiB) Viewed 7079 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
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novasct2017_Hb.png
novasct2017_Hb.png (57.32 KiB) Viewed 7079 times
novasct2017_FeII5018.png
novasct2017_FeII5018.png (98.79 KiB) Viewed 7079 times
novasct2017_HeI.png
novasct2017_HeI.png (115.71 KiB) Viewed 7079 times
novasct2017_HeI6678.png
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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
asassn-17hx_20170930_732_Hb.png (17.91 KiB) Viewed 7079 times
Very impressive!
Keep on the good work on this very peculiar event until the conjonction

François
Francisco Campos
Posts: 88
Joined: Sun Nov 29, 2015 10:13 pm

Re: New transcient, perhaps a nova

Post 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
Francois Teyssier
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Joined: Fri Sep 23, 2011 1:01 pm
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Re: New transcient, perhaps a nova

Post by Francois Teyssier »

Thank you for the information, Fran
A fantastic object!
NovaSct_LC1.PNG
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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?
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: New transcient, perhaps a nova

Post 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
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asassn-17hx -Comparison- Umberto Sollecchia.png
asassn-17hx -Comparison- Umberto Sollecchia.png (34.18 KiB) Viewed 7045 times
Francois Teyssier
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Re: New transcient, perhaps a nova

Post by Francois Teyssier »

That's great, Umberto!

François
(Currently on R Aqr)
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: New transcient, perhaps a nova

Post 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
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asassn-17hx - Comparison -Umberto Sollecchia.png
asassn-17hx - Comparison -Umberto Sollecchia.png (33.58 KiB) Viewed 7017 times
James Foster
Posts: 439
Joined: Sun Jan 24, 2016 7:14 am

Re: New transcient, perhaps a nova

Post by James Foster »

Here is my last spectra of Asassn-17hx from my high altitude site:
Image
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
James Foster
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: New transcient, perhaps a nova

Post 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
asassn-17hx_20171011_744_Umberto Sollecchia.png (21.81 KiB) Viewed 6988 times
Joan Guarro Flo
Posts: 611
Joined: Thu Nov 03, 2011 8:50 pm

Re: New transcient, perhaps a nova

Post 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.
Attachments
novasct2017_20171011_MAX.png
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