[vsnet-grb-info 25837] GRB 200613A: Kitab and AbAO optical afterglow observations, host galaxy candidate

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27937
SUBJECT: GRB 200613A: Kitab and AbAO optical afterglow observations, host galaxy candidate
DATE:    20/06/14 08:21:00 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

A. Pozanenko (IKI), S. Belkin (IKI), A. Novichonok (Petrozavodsk State 
University, KIAM), R. Ya. Inasaridze (AbAO), V.R. Ayvazian (AbAO),  G. 
V.  Kapanadze (AbAO),  E. Mazaeva  (IKI), A. Volnova (IKI), I. Molotov 
(KIAM), Sh. Ehgamberdiev (UBAI) report on behalf of IKI-GRB-FuN:

We observed Fermi  GRB 200613A (Fermi GBM team, GCN 27926; Bissaldi et 
al., GCN 27930; Ohno et al., GCN 27931) with Kitab-ISON RC-36  telescope 
starting on 2020-06-13 (UT) 17:58:33 in Clear filter and AS-32 telescope 
of Abastumani observatory in R. Within localization area of XRT 
afterglow (Kennea et al., GCN27936) we  detected the only one object in 
coordinates
(J2000) 10:12:10.02 +45:45:13.7
The object is also visible in SDSS *(SDSS12 J101210.07+454512.8*) as a 
galaxy**with a photometric redshift of z= 0.4745.

(We believe that Kann et al. (GCN 27935) observed and reported the same 
object).

We suggest the SDSS galaxy *J101210.07+454512.8* is a host galaxy of GRB 
200613A.
Preliminary photometry of the source is following

Date,      UT start, t-T0,   Exp.,  Filter,  OT,   Err., UL
                     (mid, days)
2020-06-13  17:58:33  0.54057 60*60 CR      19.39  0.20  19.8
2020-06-13  18:16:59  0.55024 50*60  R      19.27  0.07  22.1

The photometry is based on nearby SDSS DR12 stars
SDSS-DR12_id        R(Lupton)
J101149.76+454320.7 12.404
J101245.45+455119.1 13.328