TCP J04291884+4354232 possible nova mag 10.2

Alerts and Monitoring of Novae

Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Francois Teyssier » Sun Nov 29, 2020 10:03 am

A CBET, with reference to Olivier' spectra (thanks for the link, Olivier):

> Objet : CBET 4890: V1112 PERSEI = NOVA PER 2020
>
> Electronic Telegram No. 4890
> Central Bureau for Astronomical Telegrams
> Mailing address: Hoffman Lab 209; Harvard University;
> 20 Oxford St.; Cambridge, MA 02138; U.S.A.
> e-mail: cbatiau@eps.harvard.edu(alternate cbat@iau.org)
> URL http://www.cbat.eps.harvard.edu/index.html
> Prepared using the Tamkin Foundation Computer Network
>
>
> V1112 PERSEI = NOVA PERSEI 2020 = TCP J04291884+4354232
> S. Nakano, Sumoto, Japan, reports the discovery of an apparent nova (mag
> 10.6) by Seiji Ueda (Kushiro, Hokkaido, Japan) on six unfiltered 14-s
> exposures (limiting mag 13.9) taken on Nov. 25.807 UT with a Canon EOS 6D
> digital camera + 200-mm-f.l. f/3.2 telephoto lens; three confirming frames
> (limiting mag 15.6) taken by Ueda with a 0.16-m f/6.3 reflector on Nov.
> 25.813 yield the following position for the variable: R.A. = 4h29m18s.84,
> Decl. = +43d54'23".2 (equinox J2000.0). When Nakano posted the variable to
> the Central Bureau's TOCP webpage, it was automatically assigned the
> provisional designation TCP J04291884+4354232. Shortly after Ueda's
> discovery was posetd on the TOCP, an independent discovery of this variable
> at mag 10.6 on Nov. 25.844 by Stanislav Korotkiy (Ka-Dar Observatory/
> Astrovert), Kirill Sokolovsky (Sternberg Astronomical Institute, Moscow
> State University), and Olga Smolyankina (Omsk Observatory) was posted on
> the TOCP with position end figures 18s.88, 23".3 (which yielded another
> TOCP designation, TCP J04291888+4354233); they found the variable on three
> 20-s CCD exposures (limiting mag about 14.0) taken with a 135-mm-f.l. f/2.0
> telephoto lens (and ST8300M camera) located at the Ka-Dar Observatory's TAU
> Station/Astrovert, at Nizhny Arkhyz, Russia (discovery image posted at
> website URL https://vk.com/doc265309_576614930).
> Additional CCD magnitudes (unfiltered unless noted otherwise) for TCP
> J04291884+4354232: Nov. 23, [13.6 (Ueda); Nov. 24.054 UT, [13.5 (Korotkiy);
> Nov. 25.365, [16.8 (ASAS-SN Sky Patrol; reported by P. Schmeer, Bischmisheim,
> Germany); Nov. 25.908, 10.4 (Sokolovsky et al.); Nov. 26.028, 10.2 (Sokolovsky
> et al.; improved position end figures 18s.85, 23".0 with an 8-cm refractor);
> Nov. 26.064, B = 10.84, V = 10.25, I_c = 9.33 (S. Kiyota, Kamagaya, Japan,
> 0.25-m reflector near Mayhill; position end figures 18s.85, 23".3); Nov.
> 26.115, V = 10.22, I = 9.08, B = 10.90 (K. Yoshimoto, Yamaguchi-ken, Japan,
> remotely with a 0.25-m f/3.4 reflector near Mayhill, NM, USA; position end
> figures 18s.88, 22".8; an I-band image was posted at website URL
> http://orange.zero.jp/k-yoshimoto/TCP_J ... 201126.jpg);
> Nov. 26.349, 9.8 (Y. Sano, Nayoro Hokkaido, Japan, 0.36-m reflector; image
> at http://sn1997ef.web.fc2.com/sn/nova/202 ... -nova.html);
> Nov. 26.358, 10.0 (T. Noguchi, Katori, Japan; 30-s unfiltered exposure with a
> 0.23-m f/10 Schmidt-Cassegrain reflector; limiting mag 17.5; position end
> figures 18s.84, 23".1 using UCAC4 reference stars; image posted at website
> URL http://park8.wakwak.com/~ngc/images/TCP ... 201126.jpg); Nov. 26.363,
> R = 9.6 (F. Watanabe, Nayoro Observatory, Nayoro, Japan, 0.4-m f/10 Meili
> telescope; position end figures 18s.81, 22".0; UCAC4 reference stars); Nov.
> 26.387, 10.0 (F. Romanov, (Yuzhno-Morskoy, Nakhodka, Russia, forty-five
> stacked 5-s exposures taken with a Canon EOS 60D camera + 135-mm f/5.6 lens;
> image posted at URL https://www.flickr.com/photos/filipp-ro ... 0648272161);
> Nov. 26.47, B = 10.51, V = 9.91, R = 9.29, I = 8.76 (A. Pearce, Nedlands, W.
> Australia; remotely with a 0.43-m f/7 reflector near Mayhill; position end
> figures 18s.84, 23".0); Nov. 27.436, 9.0 (Romanov); Nov. 27.841, 8.7
> (Romanov); Nov. 28.444, 8.8 (Romanov). Schmeer was unable to find any other
> brightenings of this variable in ASAS-SN Sky Patrol images back to 2012 Feb.
> 14. Schmeer provides his visual-magnitude estimates for TCP
> J04291884+4354232, obtained with a 20.3-cm reflector: Nov. 26.024, 10.2;
> 26.792, 9.5.
> Selected visual magnitudes supplied by E. O. Waagen, AAVSO: Nov. 25.938,
> 10.4 (G. Poyner, Birmingham, UK); 26.085, 10.3 (L. Shotter, Uniontown, PA,
> USA); 26.100, 10.4 (B. Granslo, Oslo, Norway); 26.193, 10.3 (M. Deconinck,
> Artignosc sur Verdon, France); 26.203, 9.9 (Deconinck); 26.773, 9.3 (H. De
> Angelis, Bromma, Sweden); 26.893, 9.4 (T. Jensen, Bornholm, Denmark); 26.967,
> 9.0 (C. Marcos da Silva, Minas Gerais, Brazil); 27.149, 9.4 (C. Chiselbrook,
> Canton, GA, USA); 27.781, 8.7 (J. Jacobsen, Frederica, Denmark); 27.856, 8.7
> (De Angelis); 27.890, 8.4 (W. Vollmann, Vienna, Austria); 27.983, 8.4 (A.
> Uhrin, Hungary). Waagen also provides the following CCD magnitudes from
> B. Harris, New Smyrna Beach, FL, USA: Nov. 27.223, I = 8.13, V = 9.06, R =
> 8.56; 27.224, B = 9.76.
> O. Garde, Chabons, France, writes that an echelle spectrogram
> obtained with a 40-cm reflector shows P-Cyg profiles on the Balmer emission
> lines; his results are posted at the following two website URLs:
> http://www.spectro-aras.com/forum/viewt ... 6&t=3D2674 and
> http://www.astrosurf.com/aras/Aras_Data ... er2020.htm.

> E. Kazarovets informs the Central Bureau that the permanent GCVS
> designation V1112 Per has been assigned to this nova.
>
>
> NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
> superseded by text appearing later in the printed IAU Circulars.
>
> (C) Copyright 2020 CBAT
> 2020 November 28 (CBET 4890) Daniel W. E. Green
Francois Teyssier
 
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby etienne bertrand » Sun Nov 29, 2020 10:56 am

Bonjour François,
Comme tu dis c'est vraiment un beau cadeau du ciel cette Nova !
Je pense que tu vas faire un article sur elle dans tes compte-rendus mensuel sur les symbiotiques/cataclysmiques (qui sont supers bien fait rappelle-on le) est ce que tu pourrais traduire en français la partie que rédigera Steeve Shoore ?
Ca pourrait intéresser pas mal de monde qui ne manie pas bien la langue anglaise, voir le mettre sur astrosurf dans la partie spectro ?
A+
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Matthieu Le Lain » Sun Nov 29, 2020 3:17 pm

Bonjour à tous,

Un autre spectre, réalisé hier soir avec un Alpy600,

Comme précisé par Étienne et son spectre précédemment, les absorptions sont plus marquées.

Matthieu.

nova_per_2020_20201128_992_mlel.png
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Francois Teyssier » Sun Nov 29, 2020 4:12 pm

AAVSO lightcurve V band (selected data)

The maximum was reached on JD ~ 2459181.6 (+/0.1 d) at mag V = 8.35
One can observe the well known pre-maximum halt (mag V = 9.0 - 8.9), but there's only one measure at JD = 2459181.2
A bump (sometimes observed in novae lightcurve) appear about one day after the maximum.
At the date, it is impossible to predict if it will be followed by other oscillations (see Nova Cas 2020 for instance) or if it continues smoothly (the last is the more often observed)

NovaPer2020_LC1.PNG
NovaPer2020_LC1.PNG (11.29 KiB) Viewed 1100 times


Bonne idée, Etienne!

Le maximum a été atteint à mag V = 8,35 (~ 2459181.6 (+/0.1 d)
On peut observer la halte pré-maximum (mag V = 9.0 - 8.9), mais il n'existe qu'une seule mesure à 8.9 (J.J. = 2459181.2). Ce palier dans la courbe de luminosité est trés fréquent et bien connu depuis longtemps)
Un sursaut apparaît au début du premier déclin, environ un jour après le maximum. Ce rebond de luminosité apparait dans certaines coubes, par exemple Nova Del 2013 (un vieux souvenir!)
Il est pour l'heure impossible de prévoir s'il sera suivi d'autres oscillations (comme Nova Cas 2020) ou si le premier déclin se poursuit comme c'est le cas pour la plupart des novae.

Mathieu: bravo pour ton spectre. Il est le bienvenu dans la base, si tu souhaites me l'envoyer (francoismathieu.teyssier gmail.com et copie à arasdatabase@gmail.com)
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Matthieu Le Lain » Sun Nov 29, 2020 4:17 pm

Merci beaucoup François,

C'est fait !

Matthieu
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Francois Teyssier » Sun Nov 29, 2020 4:56 pm

I recall that the evolution of a classical nova (Nova Del 2013)
including Steve Shore's notes can be downloaded from:
http://www.astrosurf.com/aras/novae/Nova2013Del.html
http://www.astrosurf.com/aras/novae/Nova2013Del-1.html
http://www.astrosurf.com/aras/novae/Nova2013Del-2.html
http://www.astrosurf.com/aras/novae/Nova2013Del-3.html
http://www.astrosurf.com/aras/novae/Nova2013Del-4.html

La première page est traduite en français ;)

http://www.astrosurf.com/aras/novae/Nova2013Del_fr.html

Je vais ajouter la traduction des pages suivantes à mon programme de travail 2021

Note: if members could translate the texts in Spanish, Italian or any other language, they are welcome! Just send me a message for the organization.

François Teyssier
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Christophe Boussin » Sun Nov 29, 2020 7:21 pm

Hello all,

We obtained the following spectrum of nova Per 2020 the 27th of November at 22 h 25 TU with an Alpy 600 (resolution of 506, JJ = 2459181.4758) and an acquisition time of 60 min :

_novaper2020_20201127_934_Marion Thomas et Christophe Boussin_3750_7565.png
Nova Per 2020 on November 27th, 2020
_novaper2020_20201127_934_Marion Thomas et Christophe Boussin_3750_7565.png (103.35 KiB) Viewed 1065 times


novaper2020_20201127_976_Marion Thomas et Christophe Boussin.png
Nova Per 2020 on November 27th, 2020 (identification of some lines from PlotSpectra)


Clear skies,

Marion THOMAS et Christophe BOUSSIN
Last edited by Christophe Boussin on Sun Dec 06, 2020 9:48 pm, edited 1 time in total.
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan) @ ARAS database
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby etienne bertrand » Sun Nov 29, 2020 8:57 pm

Bravo pour vos spectres !
Super François les traductions, c'est vraiment utiles.
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Stephane Ubaud » Mon Nov 30, 2020 12:47 am

Hello à tous,
Super le partage, effectivement ca bouge beaucoup
ma contribution.
comp.png
comp.png (14.69 KiB) Viewed 1027 times

En l'espace d'une journée, le profil en P cyg est apparu sur Hb et H gamma
Le guidage sur la fente 25µ
novae_guidage_2.jpg

Stéphane
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Re: TCP J04291884+4354232 possible nova mag 10.2

Postby Vikrant Agnihotri » Mon Nov 30, 2020 4:27 am

Hello friends

Spectrum: TCP J04291884+4354232 (Classical Nova)
C11/f5.7/Alpy600/RSpec/Magicplotpro/Originpro-2021
We saw P-cygni profile in H beta and Halpha.
Image

Regards
Vikrant
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