New transcient, perhaps a nova

Information about outbursts of eruptive stars, Be activity, ...

Re: New transcient, perhaps a nova

Postby Olivier GARDE » Sun Aug 13, 2017 11:39 am

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
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Re: New transcient, perhaps a nova

Postby Joan Guarro Flo » Sun Aug 13, 2017 5:20 pm

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 826 times
novasct2017_20170811_2DIESB.png
novasct2017_20170811_2DIESB.png (48.96 KiB) Viewed 826 times
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Re: New transcient, perhaps a nova

Postby Francois Teyssier » Sun Aug 13, 2017 8:16 pm

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

François
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Re: New transcient, perhaps a nova

Postby umberto sollecchia » Mon Aug 14, 2017 8:45 am

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 799 times
umberto sollecchia
 
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Re: New transcient, perhaps a nova

Postby Paolo Berardi » Mon Aug 14, 2017 9:34 pm

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
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Re: New transcient, perhaps a nova

Postby Francisco Campos » Tue Aug 15, 2017 11:09 am

Hello,

here is my contribution from the night before yesterday.

_novasct2017_20170813_856_FPC.png
_novasct2017_20170813_856_FPC.png (10.63 KiB) Viewed 762 times


Greetings
Fran
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Re: New transcient, perhaps a nova

Postby Joan Guarro Flo » Wed Aug 16, 2017 11:32 am

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 748 times
novasct2017_20170811_4DIESB.png
novasct2017_20170811_4DIESB.png (68.65 KiB) Viewed 748 times
Joan Guarro Flo
 
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Re: New transcient, perhaps a nova

Postby Paolo Berardi » Wed Aug 16, 2017 2:56 pm

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
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Re: New transcient, perhaps a nova

Postby Joan Guarro Flo » Fri Aug 18, 2017 6:01 pm

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 719 times
novasct2017_20170811_6DIESB.png
novasct2017_20170811_6DIESB.png (72.11 KiB) Viewed 719 times
Joan Guarro Flo
 
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Re: New transcient, perhaps a nova

Postby Francois Teyssier » Sat Aug 19, 2017 10:08 pm

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 674 times


Udate with Paolo spectrum (18-08)

novasct2017_Halpha.png
novasct2017_Halpha.png (31.67 KiB) Viewed 640 times


Flat top: signature of an almost spherical ejecta - Still very opaque (absorption at -280 km/s)


François
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