Skip to main content

New bright Symbiotic Star

7 posts / 0 new
Last post
FMT
FMT's picture
New bright Symbiotic Star

Robert Fidrich has discovered a rise of HBHa 1704-05   (V~12.0 on July 31.945 UT, V~11.7 on Aug 3.989, and V~10.7 mag on Aug 8.938).

http://www.cbat.eps.harvard.edu/unconf/followups/J19544251+1722281.html

Paolo Berardi obtained a spectrum which clearly identify the object as a new discovered symbiotic star.

http://www.astronomerstelegram.org/?read=11937

First spectra on ARAS forum: http://spectro-aras.com/forum/viewtopic.php?f=39&t=2094

Spectra can be downloaded from ARAS database: http://www.astrosurf.com/aras/Aras_DataBase/Symbiotics/TCPJ19544251+1722...

Photometry should be very welcome

François Teyssier

 

FRF
FRF's picture
AAVSO chart

AAVSO chart for this new bright symbiotic variable:
https://www.aavso.org/apps/vsp/chart/X23175JA.png

Clear skies,

Robert

 

FRF
FRF's picture
Standstill in V? - And what about in B?

CCD V observations by Tamás Tordai, Hungary:

2018 Aug. 09.81008     10.869     0.001     V     TRT
2018 Aug. 12.81671     10.869     0.002     V     TRT

It confirms my DSLR results, that there is no significant change in the V brighness in the last few days.
 

I wonder, what this variable does in B or U band :O

Clear skies,

Robert

hambsch
hambsch's picture
BVI data uploaded

Hi,

I have uplaoded BVI data for this star.

I mag is about 9.13, V mag is 10.89, B mag is 11.47. Errors are about 0.01.

Josch

FRF
FRF's picture
VSX record of 'Vend47' updated

The VSX administrators accepted the latest revision (made by Patrick Schmeer) of the VSX record of this new symbiotic variable:
Variability type: SR+ZAND
Spectral type:     M3III:

The name "Vend47" was also accepted, so that you can submit observations or create AAVSO chart in VSP using the name Vend47 too (easier to remember and type it than the primary name ASASSN-V J195442.95+172212.6 listed in VSX.
(The name Vend47 refers to our "Vendégcsillag-kereső" /Guest Star Hunter/ Programme originally initiated by me as a nova-patrol program. In the last 7.5 years of this programme we discovered ~47 new variables so far, but Vend47 is the first real transient, a symbiotic variable.)

Clear skies,

Robert

weo
weo's picture
AAVSO Alert Notice 648 on new symbiotic

AAVSO Alert Notice 648 announces and reports on ASASSN-V J195442.95+172212.6 (TCP J19544251+1722281 = Vend47), a new symbiotic variable. Please see the notice for details and observing instructions.

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

FRF
FRF's picture
Short summary of my discovery in English

Short summary on my Guest Star Hunter blog:
http://vendegcsillagkereso.blogspot.com/2018/08/vend47-new-symbiotic-var...

(The longer version of the story of the discovery in only available in Hungarian yet.)

Log in to post comments
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484