Transient in Lyra

Information about outbursts of eruptive stars, Be activity, ...
Post Reply
Paolo Berardi
Posts: 578
Joined: Thu Sep 29, 2011 10:51 pm

Transient in Lyra

Post 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
Paolo Berardi
Posts: 578
Joined: Thu Sep 29, 2011 10:51 pm

Re: Transient in Lyra

Post by Paolo Berardi »

Dwarf nova!

Guiding camera view:

Image

Image

I updated the CBAT TOCP follow up with mine and Umberto's observation.

Paolo
Francois Teyssier
Posts: 1520
Joined: Fri Sep 23, 2011 1:01 pm
Location: Rouen
Contact:

Re: Transient in Lyra

Post by Francois Teyssier »

Excellent!
fits welcome for inclusion in the letter

François
Paolo Berardi
Posts: 578
Joined: Thu Sep 29, 2011 10:51 pm

Re: Transient in Lyra

Post by Paolo Berardi »

Sent you, François. Thanks.

A missing information, the spectrum is composed by 4 x 960s exposure frames.

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

Re: Transient in Lyra

Post by umberto sollecchia »

Bonjour à tous, voici mon profil. Umberto
Profilo nova.png
Profilo nova.png (5.52 KiB) Viewed 8034 times
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: Transient in Lyra

Post by umberto sollecchia »

Bonjour à tous, placez un nouveau profil de la nova, observé hier soir.
Profilo nova.png
Profilo nova.png (8.74 KiB) Viewed 7964 times
Crop.jpg
Umberto
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: Transient in Lyra

Post by umberto sollecchia »

Salut, placé le profil d'observation du 06/12/2017.Umberto
Profilo nova.png
Profilo nova.png (5.43 KiB) Viewed 7936 times
umberto sollecchia
Posts: 242
Joined: Tue Dec 30, 2014 3:25 pm

Re: Transient in Lyra

Post by umberto sollecchia »

Bonjour, placé le profil d'observation de cette nuit.
Profilo nova.png
Profilo nova.png (5.3 KiB) Viewed 7903 times
Umberto
Paolo Berardi
Posts: 578
Joined: Thu Sep 29, 2011 10:51 pm

Re: Transient in Lyra

Post 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):

Image

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).

Image

In addition to h-beta and h-gamma, the profile show the He I 4471 broad absorption line.

Paolo
Post Reply