TITLE: GCN CIRCULAR NUMBER: 21512 SUBJECT: LIGO/Virgo G297595: Liverpool Telescope observations of MASTER transients DATE: 17/08/17 15:32:44 GMT FROM: Chris Copperwheat at LJMU ArI C.M.Copperwheat (LJMU), A.S. Piascik (LJMU) and I.A.Steele (LJMU) report on behalf of D.Bersier (LJMU), M.Bode (LJMU), C.Collins (LJMU), M.Darnley (LJMU), D.Galloway (Monash), A.Gomboc (Nova Gorica), S.Kobayashi (LJMU), A. Levan (Warwick), P.Mazzali (LJMU), C.Mundell (Bath), E.Pian (Pisa), D. Pollacco (Warwick), D. Steeghs (Warwick), N.Tanvir (Leicester), K. Ulaczyk (Warwick), K.Wiersema (Leicester) and the GROWTH (Global Relay of Observatories Watching Transients Happen) collaboration. --- We observed MASTER OT JJ015849.50-230853.7 originally reported in GCN #21499, on 2017-08-17 at 04:45UT using the SPRAT spectrograph on the Liverpool Telescope. Using SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) we classify this transient as a SN Ia at around 13 days after peak, with a redshift of 0.035. We also observed MASTER OT J030141.96-230037.8 on 2017-08-17 at 05:20UT. There is an extended object at these coordinates, but we detect no point source above the background level. The spectrum we obtained was featureless. -- ------------------------------------------------------ C.M.Copperwheat Astrophysics Research Institute, Liverpool John Moores University ------------------------------------------------------ http://telescope.livjm.ac.uk ------------------------------------------------------ Email: c.m.copperwheat@ljmu.ac.uk Tel: +44 (0)151 231 2914 Fax: +44 (0)151 231 2921 ------------------------------------------------------ ________________________________ Important Notice: the information in this email and any attachments is for the sole use of the intended recipient(s). If you are not an intended recipient, or a person responsible for delivering it to an intended recipient, you should delete it from your system immediately without disclosing its contents elsewhere and advise the sender by returning the email or by telephoning a number contained in the body of the email. No responsibility is accepted for loss or damage arising from viruses or changes made to this message after it was sent. The views contained in this email are those of the author and not necessarily those of Liverpool John Moores University.