[vsnet-alert 16274] Re: faint possible nova next to V503 Cyg?
Denis Denisenko
d.v.denisenko at gmail.com
Wed Aug 28 01:43:58 JST 2013
This is not a nova, but previously unreported red variable (Mira or
semiregular). It shows large variability on Palomar red plates (R1=17.87 on
1953-06-14 plate, not visible on 1992-08-27 plate). Also, USNO-B1.0 gives
near-IR magnitude I=14.65 from the 1992-06-20 plate.
The star is very red in the infrared band:
2MASS 20263897+4337182
20 26 38.972 +43 37 18.27 J=9.777+/-0.024 H=8.115+/-0.067 K=7.246+/-0.021
WISE J202638.97+433718.2
W1=6.417+/-0.043 W2=6.041+/-0.023 W3=5.342+/-0.015 W4=4.741+/-0.033
This is why it shows well on the unfiltered images (in the "white" light).
It was already there 4 months ago on MASTER image (we rarely look that
close to the Galactic plane):
2MASS 20263897+4337182
20130430.773 14.95C MASTER-Amur
Denis Denisenko
Member of MASTER team at SAI MSU
On Tue, Aug 27, 2013 at 6:36 PM, FIDRICH Robert (Fidusz) <fidusz at zpok.hu>wrote:
> Andrew Cason alerted us on the AAVSO Forum, that there is a faint possible
> nova in Cyg:
>
> PNV J20263897+4337182 2013 08 22.9128* 20 26 38.97 +43 37 18.2 15.6U
>
> http://www.cbat.eps.harvard.edu/unconf/followups/J20263897+4337182.html
>
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