TITLE: GCN CIRCULAR NUMBER: 18791 SUBJECT: LIGO/Virgo G211117: Liverpool Telescope classification of EM candidates DATE: 15/12/31 20:40:06 GMT FROM: Chris Copperwheat at LJMU ArI In GCN 18782 we reported spectroscopic follow-up observations of a number of the EM candidates reported by Cenko et al. in GCN 18762. We now provide the following classifications using these data. All observations were obtained using the 2.0 metre Liverpool Telescope, La Palma by C.M. Copperwheat & I.A. Steele (Liverpool JMU) on behalf of a wider collaboration. iPTF-15ffi was observed with the SPRAT spectrograph on 2015-12-30 at 19:43UT. Classification using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) indicates the transient is a type Ia supernova with z = 0.073 -/+ 0.004 at 9.5 days past peak. This redshift is consistent with the SDSS photometric redshift of the proposed host galaxy (z=0.079). iPTF-15fel was observed with the SPRAT spectrograph on 2015-12-30 at 20:20UT. Classification using SNID indicates the transient is a type Ia supernova with z = 0.042 -/+ 0.005 at 35.6 days past peak. This redshift is consistent with the SDSS photometric redshift of the proposed host galaxy (z=0.049). iPTF-15fhq was observed with the SPRAT spectrograph on 2015-12-30 at 21:22UT. The spectrum shows a number of emission lines, and we believe this source is most likely an AGN. iPTF-15fev was observed with the SPRAT spectrograph on 2015-12-30 at 21:55UT. Classification using SNID indicates the transient is a type Ia supernova with z = 0.020 -/+ 0.002 at 53.1 days past peak. This redshift is consistent with the SDSS photometric redshift of the proposed host galaxy (z=0.018). iPTF-15fhl was observed with the SPRAT spectrograph on 2015-12-31 at 02:48UT. We detect a narrow emission line on top of the host galaxy spectrum, which is at a wavelength consistent with H-alpha at the proposed host galaxy redshift (z=0.044). iPTF-15ffh was observed with the SPRAT spectrograph on 2015-12-30 at 19:04UT. These data were obtained in twilight and are of poorer quality, and the spectrum we obtain appears to be dominated by the host galaxy.