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Transient in Lyra
Posted: Wed Jun 07, 2017 8:50 pm
by Paolo Berardi
From CBAT:
TCP J18154219+3515598
http://www.cbat.eps.harvard.edu/unconf/ ... 15598.html
Possible dwarf nova mag 11.8 unfiltered
Paolo
Re: Transient in Lyra
Posted: Wed Jun 07, 2017 10:45 pm
by Paolo Berardi
Dwarf nova!
Guiding camera view:
I updated the CBAT TOCP follow up with mine and Umberto's observation.
Paolo
Re: Transient in Lyra
Posted: Thu Jun 08, 2017 4:44 am
by Francois Teyssier
Excellent!
fits welcome for inclusion in the letter
François
Re: Transient in Lyra
Posted: Thu Jun 08, 2017 6:28 am
by Paolo Berardi
Sent you, François. Thanks.
A missing information, the spectrum is composed by 4 x 960s exposure frames.
Paolo
Re: Transient in Lyra
Posted: Thu Jun 08, 2017 7:49 am
by umberto sollecchia
Bonjour à tous, voici mon profil. Umberto
- Profilo nova.png (5.52 KiB) Viewed 8974 times
Re: Transient in Lyra
Posted: Mon Jun 12, 2017 1:00 pm
by umberto sollecchia
Bonjour à tous, placez un nouveau profil de la nova, observé hier soir.
- Profilo nova.png (8.74 KiB) Viewed 8904 times
Umberto
Re: Transient in Lyra
Posted: Tue Jun 13, 2017 12:12 pm
by umberto sollecchia
Salut, placé le profil d'observation du 06/12/2017.Umberto
- Profilo nova.png (5.43 KiB) Viewed 8876 times
Re: Transient in Lyra
Posted: Wed Jun 14, 2017 12:07 am
by umberto sollecchia
Bonjour, placé le profil d'observation de cette nuit.
- Profilo nova.png (5.3 KiB) Viewed 8843 times
Umberto
Re: Transient in Lyra
Posted: Wed Jun 14, 2017 6:38 pm
by Paolo Berardi
Well done Umberto. I also observed the DN on June 12. An important rebrightening helped us to continue the observations. Rebrightenings are also indicators of the WZ Sge membership (but there was no doubt considering the high amplitude outburst).
I performed a relatively long session to try and follow with photometry the small flux oscillations (superhumps) typical of this class stars. I covered about two cycles.
The DN lightcurve (SXV-H9, Mak 90 scope, V band filter Baader, 88 x 120s frames):
The flux oscillates about 0.07 mag around mean value 12.49. I used the latter value to calibrate the spectrum in absolute flux. On the top of graph I reported the spectroscopic coverage (11 x 960s frames).
In addition to h-beta and h-gamma, the profile show the He I 4471 broad absorption line.
Paolo