Liverpool Telescope spectroscopy of six nova candidates
ATel #12349; S. C. Williams (Lancaster), M. J. Darnley (LJMU), M. W. Healy (LJMU)
on 1 Jan 2019; 21:20 UT
Credential Certification: Steven Williams (s.williams7@lancaster.ac.uk)
Subjects: Optical, Nova, Transient
We conducted spectroscopic observations of six nova candidates in M31 using the SPRAT instrument (Piascik et al. 2014) on the 2m-robotic Liverpool Telescope (LT; Steele et al. 2004). We confirm all six candidates to be novae in M31 and summarise the results below:
Transient | Date (UT) | Hα FWHM (km/s) | Classification | Notes
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AT2018jib | 2018-12-05.044 | < 1000 | M31 Nova: Fe II | (1)
AT2018kaf | 2018-12-18.886 | N/A | M31 Nova: Fe II | (2)
AT2018kcd | 2018-12-27.813 | ~ 3300 | M31 Nova: Fe IIb | (3)
AT2018kjt | 2018-12-28.872 | < 1000 | M31 Nova | (4)
AT2018klr | 2018-12-30.950 | ~ 2100 | M31 Nova: Fe II |
AT2018lcl | 2019-01-01.811 | ~ 4000 | M31 Nova: Fe IIb |
(1) See also ATels #
12261 and #
12262.
(2) The lines in the
AT2018kaf spectrum show P-Cygni profiles.
(3) See also ATels #
12307 and #
12308. We classify
AT2018kcd as an Fe IIb nova due to the broad emission lines and the presence of Fe II 5169 Å.
(4) The spectrum of
AT2018kjt has relatively low S/N, but shows emission from the Balmer series and lines at ~4922 and ~5014 Å.
