SUBJECT : LIGO/Virgo S200213t: No significant EM counterparts identified from continued GECKO observation of host galaxy candidates
Abstract
We performed follow-up observation for host galaxy candidates (Paek et al. GCN #27067, GCN #27119) continuously using AZT-22 1.5m telescope at Maidanak Astronomical Observatory in Uzbekistan in the initial and updated localiztion area of S200213t (Singer et al, GCN #27042) and overlapped neutrino detection area (Hussain et al, GCN #27043). No significant EM counterpart candidates were found in the stacked images. Single images were taken in B and R-band of 180 or 300 seconds. Observation results are listed below. DEPTH is 5-sigma detection limit for point source in AB magnitude. Flux calibration is conducted using APASS DR9 catalog. NAME RA[J2000] DEC[J2000] DISTANCE[Mpc] DATE-OBS [UT] FILTER EXPTIME[s] DEPTH[AB] ================================================================================================================================ PGC11312 02:59:27.180 +31:23:09.161 169 2020-02-14T14:33:57 B 1500 23.35 PGC11312 02:59:27.180 +31:23:09.161 169 2020-02-20T14:33:12 B 900 23.05 PGC11312 02:59:27.180 +31:23:09.161 169 2020-02-14T15:01:51 R 1500 22.08 PGC11312 02:59:27.180 +31:23:09.161 169 2020-02-20T14:50:37 R 900 22.64 UGC02483 03:01:36.753 +31:49:09.293 91 2020-02-14T16:33:02 B 600 18.42 UGC02483 03:01:36.753 +31:49:09.293 91 2020-02-20T15:53:40 B 900 22.29 UGC02483 03:01:36.753 +31:49:09.293 91 2020-02-20T16:11:05 R 900 21.84 2MASS+03014097+3153413 03:01:40.977 +31:53:41.330 97 2020-02-20T16:34:54 B 900 22.72 2MASS+03014097+3153413 03:01:40.977 +31:53:41.330 97 2020-02-20T16:52:18 R 900 22.00 2MASS+03012583+3135093 03:01:25.837 +31:35:09.301 254 2020-02-14T15:39:28 B 1500 23.40 2MASS+03012583+3135093 03:01:25.837 +31:35:09.301 254 2020-02-20T15:13:47 B 900 23.18 2MASS+03012583+3135093 03:01:25.837 +31:35:09.301 254 2020-02-14T16:06:57 R 1500 22.88 We thank all staff in Maidanak observatory for performing the observation. Gravitational-wave EM Counterpart Korean Observatory (GECKO) is a network of 10+ 0.5m to 1m class telescopes over the world. ᐧ
- Publication:
-
GRB Coordinates Network
- Pub Date:
- February 2020
- Bibcode:
- 2020GCN.27258....1C