New transcient, perhaps a nova

Information about outbursts of eruptive stars, Be activity, ...
Olivier GARDE
Posts: 1243
Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE
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Re: New transcient, perhaps a nova

Post by Olivier GARDE »

Here's my last spectrum taken last night.
Comparison with the last echelle spectrum of Joan (taken in the ARAS data base)
Image

And Balmer lines (H Alpha and H Beta)
Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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,
Variations of the NovaSct2017 on the last 24 hours.
The star continue having it's ascending tendence in the Hidrogen.
Joan.
Attachments
novasct2017_20170811_2DIESA.png
novasct2017_20170811_2DIESA.png (31.88 KiB) Viewed 7671 times
novasct2017_20170811_2DIESB.png
novasct2017_20170811_2DIESB.png (48.96 KiB) Viewed 7671 times
Francois Teyssier
Posts: 1520
Joined: Fri Sep 23, 2011 1:01 pm
Location: Rouen
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Re: New transcient, perhaps a nova

Post by Francois Teyssier »

Congratulations Joan and Olivier,
The evolution during the decline is impressive.

François
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: New transcient, perhaps a nova

Post by umberto sollecchia »

Bonjour à tous, le profil de la nova observé le soir 13/08/2017. Umberto
Profilo nova flux.png
Profilo nova flux.png (8.12 KiB) Viewed 7644 times
Paolo Berardi
Posts: 578
Joined: Thu Sep 29, 2011 10:51 pm

Re: New transcient, perhaps a nova

Post by Paolo Berardi »

Hi all, I added my last observations in the following profile animations.

H-beta and Fe II (42), sequence that includes July 26, 30, Aug 1, 3, 9 obs.

Image

H-alpha region. Includes July 10, 25, 31, Aug 13 obs.

Image

The same spectra (H-alpha) at lower flux values:

Image

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

Re: New transcient, perhaps a nova

Post by Francisco Campos »

Hello,

here is my contribution from the night before yesterday.
_novasct2017_20170813_856_FPC.png
_novasct2017_20170813_856_FPC.png (10.63 KiB) Viewed 7607 times
Greetings
Fran
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,

These graphics showing the evolution of the Hydrogen on de last nights.

The last night was cloudy in my two observatories.

Joan.
Attachments
novasct2017_20170811_4DIESA.png
novasct2017_20170811_4DIESA.png (50.13 KiB) Viewed 7593 times
novasct2017_20170811_4DIESB.png
novasct2017_20170811_4DIESB.png (68.65 KiB) Viewed 7593 times
Paolo Berardi
Posts: 578
Joined: Thu Sep 29, 2011 10:51 pm

Re: New transcient, perhaps a nova

Post by Paolo Berardi »

Hello Catalunya and all, ;)
yesterday I measured V mag 10.30 (~ 21 UT, Aug 15). I tried to capture the complex Na D and He I 5876 superimposed lines.

Image

Paolo
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 all, Bongiorno Paolo !

The NOVA SCT2017, continued with it ascending Hydrogen emission. Is it normal ?

No tinc por, Joan.
Attachments
novasct2017_20170811_6DIESA.png
novasct2017_20170811_6DIESA.png (66.61 KiB) Viewed 7564 times
novasct2017_20170811_6DIESB.png
novasct2017_20170811_6DIESB.png (72.11 KiB) Viewed 7564 times
Francois Teyssier
Posts: 1520
Joined: Fri Sep 23, 2011 1:01 pm
Location: Rouen
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Re: New transcient, perhaps a nova

Post by Francois Teyssier »

Finally, I join the campaign ...
Not easy at Latitude 50N (+ haze tonight)
But impressive change in the Balmer profiles within 2 days
novasct2017_Ha.png
novasct2017_Ha.png (25.07 KiB) Viewed 7519 times
Udate with Paolo spectrum (18-08)
novasct2017_Halpha.png
novasct2017_Halpha.png (31.67 KiB) Viewed 7485 times
Flat top: signature of an almost spherical ejecta - Still very opaque (absorption at -280 km/s)


François
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