VizieR Online Data Catalog: ZTF candidate counterparts to 13 GW follow-up (Kasliwal+, 2020)

In Table 1, we summarize 13 gravitational wave (GW) triggers during the LIGO/Virgo's third observing run (O3; from 2019-April to 2020-March) for which we obtained either serendipitous or triggered coverage with the Zwicky Transient Facility (ZTF). See Section 2.

We used the 1 and 2m telescopes available at the Las Cumbres Observatory (LCO) global network to follow up sources discovered with the ZTF. The images obtained with the Liverpool Telescope (LT) were acquired using the IO:O camera with the Sloan griz filter set. We used the Electronic Multiplier CCD camera at Kitt Peak EMCCD Demonstrator (KPED) to take hour-long exposures in the r band to follow up candidates. We obtained data with the GMOS-N, mounted on the Gemini-North 8m telescope on Maunakea. We used the Lulin One-meter Telescope (LOT) at the Lulin Observatory in Taiwan. We also used the 0.7m robotic GROWTH-India telescope (GIT) equipped with a 4096x4108 pixel back-illuminated Andor camera for LVC event follow-up during O3. Additionally, we obtained photometric data with the Spectral Energy Distribution Machine (SEDM) on the P60 telescope. We used the imaging capabilities of the OSIRIS camera at the Gran Telescopio Canarias (GTC) to obtain 60s exposures in the r band. We obtained follow-up imaging of candidates with the Wafer Scale Imager for Prime (WASP) and the Wide-field Infrared Camera (WIRC), both on the P200 telescope. We obtained imaging of one candidate using the Low Resolution Imaging Spectrometer (LRIS), mounted at the Keck I telescope. We used the Large Monolithic Imager (LMI) on the 4.3m Lowell Discovery Telescope (LDT) at Happy Jack, Arizona, to follow up the ZTF discoveries. We used the Ultraviolet/Optical Telescope (UVOT) mounted on the Neil Gehrels Swift Observatory to follow up interesting sources and track down their UV evolution. We observed candidate counterparts of S200213t using the Astrophysical Research Consortium Telescope Imaging Camera (ARCTIC) at the APO 3.5m. See Appendix A.

(18 data files).