TITLE:   GCN CIRCULAR
NUMBER:  24188
SUBJECT: LIGO/Virgo S190425z: LOAO Observation
DATE:    19/04/25 16:15:13 GMT
FROM:    Gregory SungHak Paek at SNU  <shpaek@astro.snu.ac.kr>

Gregory S.H. Paek (SNU), Myungshin Im (SNU), Gu Lim (SNU), Insu Paek (SNU),
Suhyun Shin (SNU), Joonho Kim (SNU), Soojong Pak (KHU), Sungyong Hwang
(SNU), Bomi Park (SNU), Sophia Kim (SNU), Changsu Choi (SNU), Chung-Uk Lee
(KASI), Seung-Lee Kim (KASI), Hyung Mok Lee (KASI), on behalf of a larger
collaboration

We observed 13 host galaxy candidates with the 1.0-m telescope at the
Lemonsan Optical Astronomical Observatory(LOAO) in the 90% localization
area of S190425z, detected by LIGO/Virgo (GCN #24168).
The observation started at 2019-04-25 10:17:06 UT, and the images were
taken in R-band with 60 sec exposure time. No obvious transient has been
identified to a preliminary 3-sigma depth of R=19 AB mag. The list of the
inspected targets is given below.

NAME                    RA            DEC
IC4587                    239.965057    25.940653
2MASS+16582619-0319463    254.609146    -3.329548
PGC58097                246.408646    16.455
2MASS+17030866-0237020    255.786118    -2.617223
PGC55774                235.152664    28.512449
2MASS+16585063-1557280    254.710999    -15.957801
2MASS+17004803-0510264    255.200165    -5.17402
PGC55801                235.374939    27.986473
PGC1470081                247.533737    14.903552
NGC5567                    214.823303    35.138004
UGC10320                244.530502    21.066381
2MASS+16590728-0544311    254.780334    -5.741986
UGC10016                236.370865    26.603144