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GCN Circular 21512

LIGO/Virgo G297595: Liverpool Telescope observations of MASTER transients
2017-08-17T15:32:44Z (7 years ago)
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.

Astrophysics Research Institute,
Liverpool John Moores University
Tel: +44 (0)151 231 2914
Fax: +44 (0)151 231 2921

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