GCN Circular 27140
Kishalay De (Caltech) reports on behalf of the ZTF and GROWTH collaborations We report optical spectroscopy of four counterpart candidates announced by the Zwicky Transient Facility (GCN #27051, #27065) in the localization region of LIGO/Virgo S200213t (LVC, GCN #27042, #27096), using the Low Resolution Imaging Spectrometer (Oke et al. 1995) on the Keck-I 10 m telescope. Observations were performed on UT 2020-02-18. ZTF20aanaltd / AT2020clt shows features consistent with a SN Ia at z = 0.20. ZTF20aanamcs / AT2020crc shows broad P-Cygni Balmer emission lines at z = 0.093, consistent with a SN II. ZTF20aamvpvx / AT2020clx shows broad Balmer emission features at z = 0.074, consistent with a SN II ZTF20aamvmzj / AT2020cja shows a blue featureless continuum.