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TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Thu Nov 26, 2020 1:35 pm
by Robin Leadbeater
TCP J04291884+4354232 possible nova mag 10.2

Robin


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-----Original Message-----
From: vsnet-alert <vsnet-alert-bounces@ooruri.kusastro.kyoto-u.ac.jp> On Behalf Of Patrick Schmeer pasc1312-aavso@yahoo.de via vsnet-alert
Sent: 26 November 2020 00:00
To: vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp; vsnet-outburst@ooruri.kusastro.kyoto-u.ac.jp; vsnet-newvar@ooruri.kusastro.kyoto-u.ac.jp; cvnet-outburst@yahoogroups.com; baavss-alert@yahoogroups.com
Subject: [vsnet-alert 25005] Re: TCP J04291884+4354232: possible nova

TCP J04291884+4354232 = TCP J04291888+4354233 (N:) Apparently independent discovery by Stanislav Korotkij, Kirill Sokolovskij, and Ol'ga Smol'yankina:
http://www.cbat.eps.harvard.edu/unconf/ ... 54233.html

Spectroscopy and multiband photometry are required.

Clear skies,
Patrick
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Am Mittwoch, 25. November 2020, 22:37:00 MEZ hat Kojiguchi Naoto <kojiguchi@kusastro.kyoto-u.ac.jp> Folgendes geschrieben:

TCP J04291884+4354232: possible classical nova

Large amplitude outburst of 9.2 mag. Possible classical nova.

For details see:
http://www.cbat.eps.harvard.edu/unconf/ ... 54232.html

ASAS-SN Sky Patrol:
https://asas-sn.osu.edu/light_curves/96 ... 4675cddf88

IDs:
042918.85 +435422.96 Gaia_DR2_253363969082993664 Plx=-0.0580(0.5801) pmRA=0.291(1.602) pmDE=-1.649(0.829) G=19.8703(0.0067)
042918.85 +435422.94 PSO_J042918.854+435422.938 g=20.2318(0.0837) r=19.8459(0.0193) i=19.6555(0.0220) z=19.5819(0.0259) y=19.4822(0.0522)

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Thu Nov 26, 2020 2:14 pm
by Robin Leadbeater
Now confirmed as a classical nova

http://www.astronomerstelegram.org/?read=14224

The confirming spectrum was taken with an ALPY600 and 10 inch telescope by the Italian ANS collaboration

(Here it was clear earlier last night but the arrival of the alert in my in box coincided with that of the clouds)

Robin

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Thu Nov 26, 2020 5:44 pm
by Francois Teyssier
The page is ready :
http://www.astrosurf.com/aras/Aras_DataBase/Novae/2020_NovaPer2020.htm

Please use Nova Per 2020 as OBJNAME

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Thu Nov 26, 2020 6:55 pm
by Francois Teyssier
Un "peu" brumeux (Altaïr est à peine visible)
Mais, c'est bien elle.

novaper2020.PNG
novaper2020.PNG (324.16 KiB) Viewed 4558 times

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Thu Nov 26, 2020 7:22 pm
by Olivier GARDE
Le ciel est loin d'être clair chez moi (brume ou brouillard aussi)
Mais voici un spectre brut de 1200s avec l'eShel

Image

Je continue, on vera bien....

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Fri Nov 27, 2020 7:08 am
by Forrest Sims
Hi all,
I had luck with the weather and was able to capture the spectrum of this object with my LISA. I have tentatively identified a few lines. Thanks Robin and François for the alert. The fits data has been submitted to the ARAS database. Olivier, I hope your clouds go away and we get to see a high resolution spectrum soon:)

Woody

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Fri Nov 27, 2020 7:43 am
by James Ley
Great spectrum Woody.
I recorded mine with my ALPY a little before you. I'll probably have to reprocess a little bit.

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Fri Nov 27, 2020 9:59 am
by Jacques Michelet
Yet another one. Clouds prevented me to exposure for more than an hour.

NovaPer2020_20201126T202133.png
Nova Per 2020
NovaPer2020_20201126T202133.png (39.45 KiB) Viewed 4440 times

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Fri Nov 27, 2020 11:39 am
by David Boyd
Here is the first of two spectra I was able to record last night, 26th Nov. Thick fog eventually ended observations.
David

Nova Per 2020 Nov 26.772.png
Nova Per 2020 Nov 26.772.png (28.75 KiB) Viewed 4422 times

Re: TCP J04291884+4354232 possible nova mag 10.2

PostPosted: Fri Nov 27, 2020 2:06 pm
by Olivier GARDE
Last night was not very fine with some fog...
Image

But I have some results with an eShel spectrograph R=11000 and RC400 Astrosib.

The target in the auto guiding field (ATIK 314L+)
Image

And the full spectrum of all the exposure taken during all the night (28 exposures of 1200s each)
Image

The spectrum is very noisy specially in the blue end.

Because the target move from 37 to 88 degrees in altitude, I separated my observation in 4 parts of 2 hours each. (Can't use the same instrumental Response)
Here's the evolution of H Alpha and H beta during the night
Image

Image

And an animation center on H alpha line during the night. We can see the evolution of the P Cyg profil and mesure the ejecta velocity (around 1000km/s for H Alpha, less for H beta)
Image

And if we put all the Balmer lines together we see that the velocity is not the same with all the Balmer lines.
Image

Many lines presents P Cyg profil like He 5876 Å
Image