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Re: New transcient, perhaps a nova
Posted: Sat Jul 08, 2017 3:01 am
by Paul Luckas
I'm joining the party.
R = 540, Flux calibrated using photometry taken at the same time (V = 11.142)
Re: New transcient, perhaps a nova
Posted: Sat Jul 08, 2017 12:04 pm
by Olivier GARDE
And a spectrum taken last night with a LISA 35u slit and RC400 Astrosib
Re: New transcient, perhaps a nova
Posted: Sun Jul 09, 2017 5:28 pm
by umberto sollecchia
Bonjour, placé le profil d'observation de la nuit 08/04/2017. Il est calibré en flux absolu avec la photométrie par PaoloBerardi en même temps.Umberto
- Profilo nova flux 009-07-2017.png (10.45 KiB) Viewed 7592 times
Re: New transcient, perhaps a nova
Posted: Sun Jul 09, 2017 6:29 pm
by Paolo Berardi
Hi all, the nova brightness appears to be further increased (yesterday I measured V mag = 10.93).
The July 8 spectrum:
The Fe II lines seem to have a more prominent P-cyg profile. The multiplet 42 velocities, measured on the P-Cyg minimum, are slightly decreased (~ 320 Km/s).
The 2d spectrum contaminated by Moon glow (sky not removed). Magnesium triplet & co...
Paolo
Re: New transcient, perhaps a nova
Posted: Tue Jul 11, 2017 2:13 pm
by umberto sollecchia
Bonjour à tous, placez le profil d'osservazione della nuit de 10-07-2017.L'étalonnage est flux absolu avec photométrie simultanée de Paolo Berardi.
Umberto
Re: New transcient, perhaps a nova
Posted: Tue Jul 11, 2017 5:27 pm
by Paolo Berardi
Hi all, the nova is still bright, V mag = 10.89 on July 10.9. I observe it with the 1200 l/mm grating (R ~5500) in the H-alpha region. A lines indentification attempt in the lower graph.
H-alpha RV on P-Cyg absorption minimum is about -420 Km/s
The same measure on Si II doublet 6347/6371 (if the identification is correct): -250 Km/s
Paolo
Re: New transcient, perhaps a nova
Posted: Wed Jul 12, 2017 9:16 pm
by Francisco Campos
Hello,
very late, but finally yesterday I could take a spectrum of the nova. Only three shots; these last nights we stand hot temperatures and a very wet ambient, so the sky is often covered by low and persistent clouds. For this spectrum I used HD 179761 as comparison star.
Photometrycally the nova is now at his maximum brightness, according to AAVSO observations. Maybe Nova Sct 2017 is a slow nova (Nb)? Definitively it seems quite different if we compare it with Nova Del 2013.
- _novasct2017_20170711_867_FPC.png (12.67 KiB) Viewed 7534 times
- _novasct2017_20170711_867_FPC amp.png (8.52 KiB) Viewed 7534 times
Greetings
Fran
Re: New transcient, perhaps a nova
Posted: Thu Jul 13, 2017 12:41 am
by Francois Teyssier
Yes, it is very slow. Interesting
Very nice spectra. Congratulations to all
Francois
Re: New transcient, perhaps a nova
Posted: Fri Jul 14, 2017 6:50 am
by umberto sollecchia
Bonjour à tous, placez le profil d'osservazione della nuit de 12-07-2017 et 13-07-2017.L'ampleur de la nova est encore augmentée comme indiqué par la courbe AAVSO.
Umberto.
- Profilo nova.png (6.4 KiB) Viewed 7498 times
- Profilo Nova.png (6.54 KiB) Viewed 7498 times
- AAVSO.png (10.89 KiB) Viewed 7498 times
Re: New transcient, perhaps a nova
Posted: Fri Jul 14, 2017 8:26 am
by Joan Guarro Flo
Molto interessante, buon lavoro Umberto !
Now that it rises in magnitude, I will try to observe it with an echelle.
Un forte abbraccio, Joan.