SMC nova MASTER OT J010603.18-744715.8 in nebular phase
ATel #9688; M. J. Darnley (LJMU) S. C. Williams (Lancaster)
on 30 Oct 2016; 12:36 UT
Credential Certification: Matt Darnley (M.J.Darnley@ljmu.ac.uk)
Subjects: Optical, Nova, Transient
We have been obtaining regular spectra of the Small Magellanic Cloud nova eruption MASTER OT J010603.18-744715.8 (ATel #9621, #9622, #9628, #9631, #9635) with the FLOYDS instrument on the 2m Faulkes Telescope South (Siding Spring Observatory, NSW, Australia), see ATel #9628 for our original classification spectrum.
The latest spectrum was obtained on 2016 Oct 29.61 UT. The spectral range covers 3200 Å to 1.1 μm at an approximate resolution of R ~ 500.
The P Cygni profiles observed in the original spectrum (ATel #9628) have gone and a pure emission line spectrum is now observed. In addition to the spectral features mentioned in ATel #9628, this spectrum shows evidence of He I emission lines at 5876 Å and 7065 Å. But we also see lines at approximately 4959 Å and 5007 Å with the expected flux ratio for [O III]. At this time, the strength of the 5007 Å line is approximately half that of the Hβ line.
Hence, this spectrum indicates that this nova has now entered the nebular phase.
